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Maxtor Atlas SCSI Drive 15K II, Руководство по эксплуатации продукта

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SCSI Description

Maxtor Atlas 15K

5-15

5.10

FORMAT UNIT Command (04h)

The FORMAT UNIT command formats the disk's storage media into initiator-
addressable logical blocks according to initiator-defined options. This command 
ensures that the disk storage media is formatted so that all data sectors are accessible. 
Any data residing on the disk before this command is invoked is lost.
This command repairs damage left by previous WRITE LONG commands. The 
WRITE LONG command allows the initiator to deliberately corrupt a sector's ECC 
or EDC.

The FORMAT UNIT command updates the defective sector list, referred to as the 
Grown Defect List, that is maintained by the drive. As described below, the drive 
gives the initiator considerable control over this list. If certification is enabled, all 
initiator-addressable logical blocks are verified, and bad sectors are reassigned and 
added to the Grown Defect List.

Note:

During FORMAT UNIT command processing, the drive ignores 
the Read/Write AWRE and ARRE bits (from Error Recovery 
Mode page) and does auto-revectoring as needed.

The drive is physically formatted when it leaves the manufacturing facility. 
Therefore, it is not necessary to reformat the drive before using it. If the logical sector 
size of the drive is changed using the Block Descriptor of the MODE SELECT 
Command, it is recommended (but not necessary) to reformat the drive.

The Immed bit that can be included in the FORMAT UNIT command parameter list 
allows the initiator to control whether the drive returns completion status either after 
fetching and validating the Command Descriptor Block and parameter list or after the 
FORMAT UNIT command completes. The FORMAT UNIT command parameters 
are described in Table 5-11 and Table 5-12

The time required for the FORMAT UNIT command to format the disk primarily 
depends on the capacity of the drive. The number of defects detected and the number 
of defects already in the Primary and Grown Defect Lists also influence the time 
required to format the drive. If the Disable Certification bit is set to 1, formatting time 
is reduced.

Defective sectors on the drive are managed through two lists: the Primary Defect List 
and the Grown Defect List. The Primary Defect List is created when the drive is 
manufactured and is the drive's initial defect list. The Primary Defect List is not 
affected by the FORMAT UNIT command. Sectors listed in it are revectored by the 
drive. The Grown Defect List contains a list of the sectors that have gone bad since 
the drive's primary list was generated.

Defects are communicated in a data structure referred to as a Defect Descriptor. The 
SCSI specification defines several Defect Descriptor formats. The FORMAT UNIT 
command recognizes defect descriptors in Block format, Bytes From Index format, 
and Physical Sector format. (There is one exception: a value of FFFFFFFFh in either 
the defect Bytes From Index field or the Defective Sector Number fields is ignored). 

Содержание Atlas SCSI Drive 15K II

Страница 1: ...Maxtor Atlas 15K Product Manual ...

Страница 2: ...Maxtor Atlas 15K Product Manual April 29 2003 PN 1880 ...

Страница 3: ...U S and Foreign Patents Pending Maxtor MaxFax and No Quibble Service are registered trademarks of Maxtor Corporation registered in the U S A and other countries Maxtor Atlas DisCache WriteCache are trademarks of Maxtor Corporation All other brand names or trademarks are the property of their manufacturers Maxtor reserves the right to make changes and improvements to its products without incurring ...

Страница 4: ...duct failure damage and invalidation of all warranties 1 BEFORE unpacking or handling a drive take all proper electro static discharge ESD precautions including per sonnel and equipment grounding Stand alone drives are sensitive to ESD damage 2 BEFORE removing drives from their packing material allow them to reach room temperature 3 During handling NEVER drop jar or bump a drive 4 Once a drive is ...

Страница 5: ...e is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the fol lowing measures Reorient or relocate the receiving antenna Increase the separation between th...

Страница 6: ......

Страница 7: ...3 3 2 1 Shock Feet 3 4 3 3 UNPACKING INSTRUCTIONS 3 4 3 4 HARDWARE OPTIONS 3 6 3 4 1 Configuration Jumpers and Connections 3 6 3 4 2 Jumper Options on the 68 Pin Wide PCB 3 6 3 4 3 SCA 2 80 Pin Connector Versions 3 10 3 5 INTERFACE CONNECTOR J1 3 14 3 5 1 68 Pin Wide SCSI Connector LVD 3 15 3 5 2 80 Pin SCA 2 SCSI Connector LVD 3 16 3 5 3 68 Pin Wide Single Ended SCSI Connector 3 18 3 5 4 80 Pin S...

Страница 8: ...Command Descriptions 5 1 5 2 Command Descriptor Block 5 4 5 3 Status Error Reporting 5 7 5 4 Auto Contingent Allegiance Condition and Contingent Allegiance Condition 5 8 5 5 Extended Contingent Allegiance Condition 5 9 5 6 Linked Commands 5 10 5 7 DATA Transfer Command Components 5 11 5 8 SCSI COMMAND DESCRIPTIONS 5 13 5 9 NEW OPERATING DEFINITION 40h 5 14 5 10 FORMAT UNIT Command 04h 5 15 5 10 1 ...

Страница 9: ... 5 83 5 20 READ 6 Command 08h 5 93 5 21 READ 10 Command 28h 5 94 5 22 READ BUFFER Command 3Ch 5 95 5 23 READ CAPACITY Command 25h 5 97 5 24 READ DEFECT DATA Command 10 37h 5 98 5 25 READ DEFECT DATA Command 12 B7h 5 101 5 26 READ LONG Command 3Eh 5 103 5 27 REASSIGN BLOCKS Command 07h 5 104 5 28 RECEIVE DIAGNOSTIC RESULTS Command 1Ch 5 105 5 28 1 Supported Diagnostics Pages Page 00h 5 106 5 28 2 T...

Страница 10: ...EMBEDDED SERVO SYSTEM 6 4 6 9 DATA INTEGRITY AND SECURITY 6 4 6 9 1 Media Error Protection 6 4 6 9 2 Transfer Error Protection 6 4 6 9 3 Addressing Error Protection 6 4 6 9 4 Data Sector Reallocation Error Protection 6 5 6 9 5 Data Verification 6 5 6 10 TAGGED COMMAND QUEUING 6 5 6 11 COMMAND REORDERING 6 5 6 12 BANDED RECORDING 6 6 6 13 POWER MANAGEMENT 6 6 6 14 DIAGNOSTICS 6 6 6 14 1 Power On Se...

Страница 11: ...nformation Unit Transfers 6 13 6 18 HOT PLUGGING REMOVAL AND INSERTION OF SCSI DEVICES 6 13 6 18 1 System Considerations 6 14 6 18 2 APPLICABLE SCSI PHYSICAL DOCUMENTS 6 15 Appendix A QUICK REFERENCE A 1 SCSI 2 SCSI 3 Equivalent Terminology A 1 A 2 SCSI Commands and Messages A 2 A 3 SCSI Pages A 3 A 4 Sense Keys A 5 A 5 Status Codes A 5 Appendix B NEGOTIATED RATE INFORMATION PAGE REFERENCE B 1 TRA...

Страница 12: ...Table of Contents xii Maxtor Atlas 15K ...

Страница 13: ...68 Pin Wide SCSI Drive PCB 3 7 Figure 3 4 Pin Locations on SCA 2 Connector 3 11 Figure 3 5 J1 Interface Connector Configurations 3 14 Figure 3 6 Mounting Dimensions Maxtor Atlas 15K Drives 3 22 Figure 3 7 Mounting Screw Clearance for Maxtor Atlas 15K Drive 3 23 Figure 3 8 Lengthwise Airflow Cooling 3 24 Figure 3 9 Crosswise Airflow Cooling 3 25 Figure 6 1 ST and DT CLocking 6 11 ...

Страница 14: ...List of Figures xiv Maxtor Atlas 15K ...

Страница 15: ... and Vibration Specifications 4 9 Table 4 9 Error Rates 4 11 Table 5 1 Supported SCSI Commands 5 1 Table 5 2 Typical 6 Byte Command Descriptor Block Data Format 5 4 Table 5 3 Command Descriptor Block Field Descriptions 5 4 Table 5 4 Typical 6 Byte Command Descriptor Block Data Format 5 5 Table 5 5 Command Descriptor Block Control Field Field Descriptions 5 6 Table 5 6 Status Codes 5 7 Table 5 7 Le...

Страница 16: ... 29 Table 5 39 Command Support Data Page Command or Operation Codes 5 30 Table 5 40 LOG SELECT Command Descriptor Block Data Format 5 32 Table 5 41 LOG SELECT Command Descriptor Block Field Descriptions 5 32 Table 5 42 Disk Drive Log Pages 5 33 Table 5 43 LOG SENSE Command Descriptor Block Data Format 5 34 Table 5 44 LOG SENSE Command Descriptor Block Field Descriptions 5 34 Table 5 45 LOG SENSE L...

Страница 17: ...5 87 Codes Used by the MRIE Field 5 63 Table 5 88 MODE SELECT 10 Command Descriptor Block Data Format 5 65 Table 5 89 Mode Parameter Header 10 Byte Data Format 5 65 Table 5 90 Mode Parameter Block Descriptor Data Format 5 65 Table 5 91 Mode Parameter Block Descriptor Field Descriptions 5 66 Table 5 92 MODE SENSE 6 Command Descriptor Block Data Format 5 67 Table 5 93 MODE SENSE Command Field Descri...

Страница 18: ...ommand Field Descriptions 5 96 Table 5 128 READ CAPACITY Command Data Format 5 97 Table 5 129 READ CAPACITY Command Field Descriptions 5 97 Table 5 130 READ CAPACITY Returned Data Data Format 5 97 Table 5 131 READ DEFECT DATA 10 Command Data Format 5 98 Table 5 132 READ DEFECT DATA 10 Command Field Description 5 99 Table 5 133 Defect Descriptor Block Format 5 99 Table 5 134 Defect Descriptor Bytes...

Страница 19: ... Sense Data Format for Error Code 70h or 71h Data Format 5 115 Table 5 170 Sense Data Fields Error Code 70h Field Descriptions 5 116 Table 5 171 Supported Sense Keys 5 117 Table 5 172 Sense Key Information Field Contents 5 118 Table 5 173 Supported Additional Sense Codes and Sense Code Qualifiers in Hex 5 119 Table 5 174 Sense Key Specific Field Contents 5 127 Table 5 175 ILLEGAL REQUEST Sense Key...

Страница 20: ... Table 5 206 VERIFY Command Field Descriptions 5 144 Table 5 207 WRITE 6 Command Descriptor Block Data Format 5 145 Table 5 208 WRITE 6 Command Field Descriptions 5 145 Table 5 209 WRITE 10 Command Descriptor Block Data Format 5 146 Table 5 210 WRITE 10 Command Field Descriptions 5 146 Table 5 211 WRITE AND VERIFY Command Descriptor Block Data Format 5 147 Table 5 212 WRITE AND VERIFY Command Fiel...

Страница 21: ...es disk drive purchase and configuration decisions and system integrators that are responsible for the SCSI interface This manual is not intended for end users and is not a users manual or an installation guide The manual provides information about installation interface command implementation maintenance and gives the general specifications of the drive 1 2 MANUAL ORGANIZATION This manual is orga...

Страница 22: ... weighted ECC error correcting code Kfci thousands of flux changes per inch Gbit gigabit GB gigabyte Hz hertz KB kilobytes LSB least significant bit LVDS low voltage differential SCSI mA milliamperes MB megabytes 1 MB 1 000 000 bytes when referring to disk transfer rates or storage capacities and 1 048 576 bytes in all other cases Mbit s megabits per second MB s megabytes per second MHz megahertz ...

Страница 23: ...tion The hexadecimal notation is given in 9 point subscript form An example is 30H Signal Negation A signal that is non active or is in its non asserted state Messages A message that is sent from the drive to the host is listed in all capitals An example is BUS DEVICE RESET Naming Conventions Host In general the system in which the drive resides is referred to as the host Computer Voice This refer...

Страница 24: ...About This Manual 1 4 Maxtor Atlas 15K ...

Страница 25: ...Ultra320 SCSI Ultra3 Ultra SCSI 68 pin Wide 16 bit Ultra320 SCSI Ultra3 Ultra SCSI 80 pin SCA 2 16 bit Ultra320 Supports all legacy SCSI interfaces The Maxtor Atlas 15K hard disk drives feature an embedded SCSI drive controller and use SCSI commands to optimize system performance Because the drive manages media defects and error recovery internally these operations are fully transparent to the use...

Страница 26: ... the fly Highly automated SCSI protocol including Auto Read Write 1 1 interleave on read write operations High performance Ultra320 SCSI interface SCSI 2 and SCSI 3 supported Ultra 2 SCSI 3 Ultra 3 LVDS transfer rates supported Fast Ultra and Ultra 2 SCSI transfer rates supported SCSI 3 compliant S M A R T 2 Self Monitoring Analysis and Reporting Technology SCSI bus active negation drivers SCAM Le...

Страница 27: ... Code ECC with cross checking correction up to three separate bursts of 32 bits each totalling up to 96 bits in length Self diagnostic firmware Patented Airlock automatic shipping lock and dedicated landing zone Transparent media defect mapping High performance in line defective sector skipping Reassignment of defective sectors discovered in the field without reformatting Thermal Sensing monitors ...

Страница 28: ... requirements Maxtor s disk drive products conform to the following EMI EMC Standards CE Mark Europe is a self declaration as per Directive 89 336 EN55022 1998 Emissions and EN55024 1998 Immunity C Tick Mark Australia New Zealand is a Self Declaration as per AS NZS3548 1998 BSMI Mark Taiwan is a Self Declaration as per CNS 13438 1998 MIC Mark Korea is a Certificate of registration for SCSI disk dr...

Страница 29: ...damage to the drive Unplug the unit containing the drive to provide an added measure of safety Read understand and observe all label warnings 3 1 2 Handling Damage to the drive can occur as the result of careless handling vibration shock or electrostatic discharge ESD Always handle the drive with care to avoid damage to the precision internal components Follow these guidelines to avoid damage to t...

Страница 30: ...To minimize the possibility of ESD related damage to the drive we strongly recommend using both a properly installed workstation anti static mat and a properly installed ESD wrist strap When correctly installed these devices reduce the buildup of static electricity which might harm the drive Observe the following precautions to avoid ESD related problems Use a properly installed anti static pad on...

Страница 31: ...s 15K hard disk drive is shipped without a faceplate and comes in the following SCSI interface configurations 68 pin Wide SCSI 80 pin SCA 2 SCSI Figure 3 1 shows the mechanical dimensions of each of the drives Figure 3 1 Dimensions for the Maxtor Atlas 15K Hard Disk Drives ...

Страница 32: ... protection the shock feet are designed to exceed the form factor when uncompressed 3 3 UNPACKING INSTRUCTIONS 1 Open the shipping container and remove the packing assembly that contains the drive 2 Remove the drive from the packing assembly 3 When you are ready to install the drive remove it from the ESD bag CAUTION The maximum limits for physical shock can be exceeded if the drive is not handled...

Страница 33: ...xtor Atlas 15K 3 5 Figure 3 2 shows the packing assembly for a single Maxtor Atlas 15K hard disk drive Shipping containers of 10 and 20 pack are available for multiple drive shipments Figure 3 2 Drive Packing Assembly ...

Страница 34: ...figure the jumpers on Maxtor Atlas 15K disks with 68 pin SCSI interface connectors The following features are jumper selectable A0 A1 A2 A3 SCSI Bus Device Identification FO Fault Out Remote LED DS Delay Spin SE Force SE Single Ended Disable LVD BO Busy Out Remote LED WP Write Protect SS Stagger Spin NW No Wide Enable Narrow Mode Note The disk drive does not support on board SCSI termination The d...

Страница 35: ...d disk drive depends on the host system in which it is to be installed Figure 3 3 shows the printed circuit board PCB assemblies for 68 pin SCSI configurations indicating the jumpers that control some of these options Figure 3 3 Jumper Locations on the 68 Pin Wide SCSI Drive PCB ...

Страница 36: ...nd 2 respectively are active LOW signals That is the bit is a 1 if the corresponding remote switch is closed to ground Use pins 1 3 5 and 7 as the associated ground returns for ID bits 3 2 1 and 0 respectively 3 4 2 1 Write Protection To configure Write Protection for the drive install a jumper across pin pair 19 20 on the J3 Option Header To disable Write Protection on the drive remove the jumper...

Страница 37: ...us of the drive can be monitored remotely by connecting a remote external Busy and or remote Fault display LEDs to the 17 18 pins on the J3 Option Header or the J1 Option Connector Remote Busy LED On the J3 Option Header connect the cathode side of the remote Busy LED to pin 18 Busy Out Connect the anode side of the LED to pin 17 5V On the J1 Option Connector connect the cathode side of the remote...

Страница 38: ... illustrates the layout of the pins Note The SCA 2 Connector version of the disk drives does not provide the following jumper configuration TERMPWR Active Termina tion or Write Protection 3 4 3 1 Termination for the 80 Pin SCA 2 Connector Versions Note Refer to your system or SCSI controller documentation regard ing any additional recommendations regarding drive placement on the SCSI bus and SCSI ...

Страница 39: ...m 0 through 15 Configure the SCSI ID by providing the proper open or ground signal inputs to the referenced pins of the drive s 80 pin new version SCA 2 connector Figure 3 4 Refer to Table 3 2 for SCSI ID pin assignments Note Refer to your system or SCSI controller documentation for spe cific recommendations about assigning SCSI ID numbers for your specific system Figure 3 4 Pin Locations on SCA 2...

Страница 40: ...h The delay is equal to a user specified multiplier multiplied by the numerical SCSI ID of the drive This will give a staggered spin up in multiple drive installations Option 3 Drive spin up is controlled by the START STOP UNIT command Configure the desired spin up option Table 3 3 by setting the state of the DELAY_SPIN Pin 38 and STAGGER_SPIN Pin 78 inputs on the 80 pin SCA 2 connector Figure 3 4...

Страница 41: ...ng a SCSI operation To use this output connect a user supplied LED cathode to the BUSY_OUT connection pin 77 on the SCA Connector Figure 3 4 The LED anode must be attached to the proper 5 VDC supply through an appropriate current limiting resistor Option STAGGER_SPIN Pin 78 DELAY_SPIN Pin 38 Option 1 Spin Up When Power is Applied Open Open Option 2 Spin Up After Delay Ground Open Option 3 Spin Up ...

Страница 42: ... Maxtor Atlas 15K 3 5 INTERFACE CONNECTOR J1 The configuration of J1 is different for the 68 pin and 80 pin SCSI variations Figure 3 5 shows the various connector styles Figure 3 5 J1 Interface Connector Configurations ...

Страница 43: ...AL NAME DB 12 1 1 2 35 DB 12 DB 13 2 3 4 36 DB 13 DB 14 3 5 6 37 DB 14 DB 15 4 7 8 38 DB 15 DB P1 5 9 10 39 DB P1 DB 0 6 11 12 40 DB 0 DB 1 7 13 14 41 DB 1 DB 2 8 15 16 42 DB 2 DB 3 9 17 18 43 DB 3 DB 4 10 19 20 44 DB 4 DB 5 11 21 22 45 DB 5 DB 6 12 23 24 46 DB 6 DB 7 13 25 26 47 DB 7 DB P 14 27 28 48 DB P GROUND 15 29 30 49 GROUND DIFFSENS 16 31 32 50 GROUND TERMPWR 17 33 34 51 TERMPWR TERMPWR 18...

Страница 44: ...D 42 S 12V 3 L 12V GROUND 43 S 12 V 4 S MATED 1 44 S OPT 3 3 VOLTS 5 L L OPT 3 3V CHARGE 45 S OPT 3 3 VOLTS 6 L DIFFSNS 46 S DB 11 7 S DB 11 47 S DB 10 8 S DB 10 48 S DB 9 9 S DB 9 49 S DB 8 10 S DB 8 50 S I O 11 S I O 51 S REQ 12 S REQ 52 S C D 13 S C D 53 S SEL 14 S SEL 54 S MSG 15 S MSG 55 S RST 16 S RST 56 S ACK 17 S ACK 57 S BSY 18 S BSY 58 S ATN 19 S ATN 59 S DB P0 20 S DB P0 60 S DB 7 21 S ...

Страница 45: ...ies I part number 787311 2 Vertical receptacle BERG part number 71780 001 S DB 2 26 S DB 2 66 S DB 1 27 S DB 1 67 S DB 0 28 S DB 0 68 S DB P1 29 S DB P1 69 S DB 15 30 S DB 15 70 S DB 14 31 S DB 14 71 S DB 13 32 S DB 13 72 S DB 12 33 S DB 12 73 S 5V 34 S MATED 2 74 S 5V 35 L 5V GROUND 75 L 5V CHARGE 36 L 5V GROUND 76 L SPINDLE SYNC 37 L ACTIVE LED OUT 77 L RMT START 38 L DLYD_START 78 L SCSI ID 0 3...

Страница 46: ... 13 GROUND 3 5 6 37 DB 14 GROUND 4 7 8 38 DB 15 GROUND 5 9 10 39 DB P1 GROUND 6 11 12 40 DB 0 GROUND 7 13 14 41 DB 1 GROUND 8 15 16 42 DB 2 GROUND 9 17 18 43 DB 3 GROUND 10 19 20 44 DB 4 GROUND 11 21 22 45 DB 5 GROUND 12 23 24 46 DB 6 GROUND 13 25 26 47 DB 7 GROUND 14 27 28 48 DB P GROUND 15 29 30 49 GROUND GROUND 16 31 32 50 GROUND RESERVED 19 37 38 53 RESERVED GROUND 20 39 40 54 GROUND GROUND 21...

Страница 47: ...8 10 S GROUND 50 S I O 11 S GROUND 51 S REQ 12 S GROUND 52 S C D 13 S GROUND 53 S SEL 14 S GROUND 54 S MSG 15 S GROUND 55 S RST 16 S GROUND 56 S ACK 17 S GROUND 57 S BSY 18 S GROUND 58 S ATN 19 S GROUND 59 S DB P0 20 S GROUND 60 S DB 7 21 S GROUND 61 S DB 6 22 S GROUND 62 S DB 5 23 S GROUND 63 S DB 4 24 S GROUND 64 S DB 3 25 S GROUND 65 S DB 2 26 S GROUND 66 S DB 1 27 S GROUND 67 S DB 0 28 S GROUN...

Страница 48: ... and 12 volt returns and are connected together on the drive 3 7 4 PIN MATING CONNECTOR The recommended mating connectors for the 5 VDC and 12 VDC input power connector are listed in Table 3 8 J1 SECTION A 4 PIN MATING CONNECTOR TYPE AND PART NUMBER OR EQUIVALENT PIN NUMBER VOLTAGE LEVEL 1 12 VDC 4 Pin Connector AMP P N 1 480424 0 Loose piece contacts AMP P N VS 60619 4 Strip contacts AMP P N VS 6...

Страница 49: ...shown in Table 3 9 Table 3 9 J1 Auxiliary 12 Pin Connector J1 Auxiliary Connector Pins MATING CONNECTOR TYPE AND PART NUMBER OR EQUIVALENT PIN NUMBER FUNCTION 1 SCSI Addr A0 12 pin connector Hirose Electric Co Dual row crimp socket A3B 12D 2C Crimp terminals A3B 26305CC or equivalent 2 XTFAULT 3 SCSI Addr A1 4 GND 5 SCSI Addr A2 6 GND 7 SCSI Addr A3 8 Busy Out 9 NC 10 GND 11 LED Pwr 5 V 12 NC ...

Страница 50: ...unting holes on the Maxtor Atlas 15K hard disk drive allow the drive to be mounted in any orientation Figure 3 6 shows the location of the three mounting holes on each side of the drive The drives also can be mounted using the four mounting hole locations on the PCB side All dimensions are in millimeters For mounting 6 32 UNC screws are recommended Figure 3 6 Mounting Dimensions Maxtor Atlas 15K D...

Страница 51: ...ng unwanted stress on the PCBA Clearance from the drive to any other surface except mounting surfaces must be a minimum of 1 25 mm 0 05 inches Figure 3 7 Mounting Screw Clearance for Maxtor Atlas 15K Drive CAUTION The PCB is very close to the mounting holes Do not exceed the specified length for the mounting screws The specified screw length allows full use of the mounting hole threads while avoid...

Страница 52: ...idence of recovered errors 3 9 4 Ventilation The Maxtor Atlas 15K hard disk drive may operate with or without a cooling fan provided that the maximum HDA temperature as measured on the drives s top cover does not exceed 131 F 60 C Drive reliability and warranty wil be limited if the drive is exposed to temperatures greater than 55 C Figures 3 9 and 3 10 show airflow recommended for adequate coolin...

Страница 53: ...Installation Maxtor Atlas 15K 3 25 Figure 3 9 Crosswise Airflow Cooling ...

Страница 54: ...Installation 3 26 Maxtor Atlas 15K ...

Страница 55: ...GB Nominal rotational speed rpm 15 000 15 000 15 000 Number of Disks 1 2 4 Number of R W heads 2 4 8 Data Organization Zones per surface 24 24 24 Track density 61 000 tpi 61 000 tpi 61 000 tpi User Data Cylinders 32 386 32 386 32 386 Total tracks 32 428 32 428 32 428 Sectors per track Inside zone 455 455 455 Outside zone 630 630 630 Total User Sectors 35 888 130 71 776 260 143 552 520 Bytes per se...

Страница 56: ... msec read 40 msec write 25 msec read 40 msec write Random4 Average Seek Read 3 2 ms typical 3 2 ms typical 3 4 ms typical Random4 Average Seek Write 3 6 ms typical 3 6 ms typical 3 8 ms typical Full Stroke5 Seek Read 8 0 ms typical 8 0 ms typical 8 0 ms typical SCSI Hard Reset Time6 22 ms typical 25 sec maximum 22 ms typical 25 sec maximum 22 ms typical 25 sec maximum Power on to Drive Ready7 25 ...

Страница 57: ... Full Stroke seek is defined as a seek from cylinder 0 to maximum cylinder or vice versa It may include one head switch 6 SCSI Hard Reset time is the time from Reset to Selection 7 At power on start up error algorithms are used These recovery routines may extend the time to Drive Ready by as much as 30 seconds 8 Refer to Section 4 11 DISK ERRORS for details on error rate definitions 4 2 FORMATTED ...

Страница 58: ...der Switch Time is the time from the conclusion of the last sector of a cylinder to the first logical sector on the next cylinder 4 Random LBA 5 1 3 Stroke Seek is defined as any seek of maximum length cylinder 3 1 3 stroke seek may include one head switch 6 Full Stroke Seek is defined as a seek from cylinder 0 to maximum cylinder or vice versa Full stroke may include one head switch 7 SCSI Hard R...

Страница 59: ...minal while powering up or down 4 5 2 Power Reset Limits When powering up the drive remains reset inactive until both rising Voltage thresholds reset limits are exceeded for 100 ms When powering down the drive resets immediately when either supply voltage drops below the falling voltage threshold Table 4 4 Power Reset Limits1 MAXTOR ATLAS 15K 18 4 36 7 73 4 GB 12 V 10 5 V 5 Allowable ripple and no...

Страница 60: ...ed down the motor is up to speed and the Drive Ready condition exists The actuator resides on the last track accessed 3 Max Workload Maximum workload is defined as a random read write profile with a 50 read and 50 write distribution The transfer length is 8 blocks 4KB and a queue depth of 4 is used 4 Maximum Average Current is defined as mean current plus 3 Standard Deviations 5 Power requirements...

Страница 61: ...s defined nominal position The unit under test should be supported so that its bottom surface in the test orientation is less than or equal to 6 centimeters from the chamber floor but not in contact with it The unit should be supported with small compliant well damped blocks that rest on the floor 2 The relationship between bels and dBA for sound power is 1 bel 10dBA 4 6 1 Acoustic Tonal Quality A...

Страница 62: ...Atlas 15K hard disk drive Table 4 7 Environmental Specifications 1 No condensation 2 Altitude is relative to sea level 1 000 feet 305 meters 1 Except when shock feet are uncompressed see page 4 of Chapter 3 PARAMETER OPERATING NON OPERATING Temperature Non condensing 5 to 55 C 41 to 131 F 40 to 70 C 40 to 158 F Temperature Gradient Non condensing 20 C hr maximum 30 C hr maximum Humidity1 Maximum W...

Страница 63: ... been subjected to specified non operating levels of shock and vibration with power to the drive off there will be no change in performance at power on When packed in its 1 pack shipping container the Maxtor Atlas 15K drive can withstand a drop from 30 inches onto a concrete surface on any of its surfaces six edges or three corners The 12 pack shipping container can withstand a drop from 30 inches...

Страница 64: ...s at all environments Equal number of power off and standby spin downs Annualized Failure Rate AFR No greater than 0 7 percent Drive reliability is closely related to the temperatures the drive is exposed to The operational design temperature ambient is 86 F 30 C Temperature ambient above 131 F 55 C or below 41 F 5 C may decrease drive reliability ...

Страница 65: ...ng Code ECC or retries within the retry limits specified in the mode pages The drive terminates the command either when a repeating error pattern occurs or after both the specified number of retries and application of triple burst error correction fail to correct the error 3 A seek error occurs when the actuator fails to reach or remain on the requested cylinder and or the drive requires the execu...

Страница 66: ...Specifications 4 12 Maxtor Atlas 15K ...

Страница 67: ...mediate commands are processed when received by the drive In most cases these commands do not require drive resources do not change the state of the drive and bypass the command queue unless the command is tagged Sequential commands execute in the order that they arrive unless accompanied by a HEAD OF QUEUE tag and execute to completion before a subsequent command is activated Normal commands are ...

Страница 68: ...al RELEASE 10 57h Sequential REPORT LUNS A0h Sequential REPORT DEVICE IDENTIFIER A3h Sequential REQUEST SENSE 03h Immediate RESERVE 16h Sequential RESERVE 10 56h Sequential REZERO UNIT 01h Sequential SEEK 6 0Bh Sequential SEEK 10 2Bh Sequential SEND DIAGNOSTIC 1Dh Sequential SET DEVICE IDENTIFIER A4h Sequential START STOP UNIT 1Bh Sequential SYNCHRONIZE CACHE 35h Sequential TEST UNIT READY 00h Imm...

Страница 69: ... RELEASE are supported as are third party reservations Extent reservations are not supported 3 The RECEIVE DIAGNOSTIC RESULTS and SEND DIAGNOSTIC DATA commands implement vendor unique pages to test the drive during the manufacturing process It is recommended that initiators specify only the non page format variants of these commands PF 0 except for page 0x40 ...

Страница 70: ...riptions Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 1 Reserved MSB Logical Block Address LBA 2 3 Logical Block Address LBA 4 Transfer Length Parameter List Length or Allocation Length 5 Control Field Description Operation Code The first byte of a SCSI CDB contains an operation code The operation code of the CDB has a Group Code field bits 7 5 and a Command Code field bits 4 0 The 3 bit Group Code f...

Страница 71: ... value of 0 indicates that 256 sectors are to be sent Transfer length values of 1 through 255 indicate the number of sectors to be transferred Commands that use multiple bytes for the transfer length value function differently A transfer length value of 0 indicates that no data transfer is to occur Transfer length values of 1 or greater indicate the number of sectors to be transferred Parameter Li...

Страница 72: ...f the Link bit is one and the flag bit is zero and the command completes successfully the drive will contin ue the task and return a status of INTERMEDIATE and a service response of Linked Command Complete If the Link bit and the Flag bit of the Control word are both set to one and the drive completes a command with a status of INTERMEDIATE the drive will return a service response of Linked Comman...

Страница 73: ...logical unit s com mand queue is full all internal command buffers are in use A disconnect privilege was not granted in the IDENTIFY mes sage of a queue tagged I O process Parallel SCSI A disconnect privilege was not granted in the IDENTIFY mes sage of a non tagged I O process and a command from another initiator is currently active Parallel SCSI A command is received while an auto contingent alle...

Страница 74: ...BORT TASK SET message from the allegianced initiator the drive clears any queued command sourced by that initiator and processes the remaining queued commands For Parallel SCSI as its first action following receipt of the CHECK CONDITION status code the initiator sends a REQUEST SENSE command to retrieve the sense data Any other command from the initiator causes the drive to set the sense key to N...

Страница 75: ...in that under the Extended Contingent Allegiance condition The drive sends an INITIATE RECOVERY message to the allegiance initiator prior to returning the failed command s COMMAND COMPLETE message If the initiator rejects the INITIATE RECOVERY message the drive drops back to contingent allegiance level of operation for the current error An ABORT message does not terminate the extended contingent a...

Страница 76: ...EDIATE status followed by a LINKED COMMAND COMPLETE message If the Flag bit was set in the Command Descriptor Block the drive sends an INTERMEDIATE status followed by a LINKED COMMAND COMPLETE WITH FLAG message The drive then switches the bus to the command phase in order to receive the next command in the linked chain All commands in a linked chain are addressed to the same nexus and are part of ...

Страница 77: ...hase For example a FORMAT UNIT Defect List Header contains a Defect List Length field that contains the total length of the Defect Descriptors that follow the Defect List Header Table 5 8 does not include these cases Table 5 8 DATA Phase Command Contents Field Name Units Implied Allocation Length Bytes of data the drive is allowed to send to the initiator Parameter List Length Bytes of data the in...

Страница 78: ...ist Option not supported REZERO UNIT 0 Command Length in CDB Data Out To Drive Data In To Initiator SEEK 6 10 0 SEND DIAGNOSTIC Parameter List Diagnostic Page SET DEVICE IDENTIFIER START STOP UNIT 0 SYNCHRONIZE CACHE 0 TEST UNIT READY 0 VERIFY Transfer Data WRITE 6 10 Transfer Data WRITE AND VERI FY Transfer Data WRITE BUFFER Parameter List Zeros 4 Mode zero buffer 512 or Data to put into DRAM or ...

Страница 79: ...ields Several fields that are common to many commands are described here rather than being repeated throughout the descriptions These fields include Reserved Reserved bits fields bytes and code values are set aside for future standardization and must be set to 0 If the drive receives a command that contains non 0 bits in a reserved field or a reserved code value the command is terminated with a CH...

Страница 80: ... 2 1 0 0 Operation Code 40h 1 Reserved 2 Reserved Save 3 Rsv d New Operating Definition 0 1 2 3 4 5 and 6 are legal values for Parallel SCSI Disk Drives 4 7 Reserved 8 Parameter Data Length 9 Control Field Description Save Save Parameters When this field is set to 1 the new op erating definition is saved in the drive s non volatile memory New Operating Definition The values that can be supplied in...

Страница 81: ...drive The Immed bit that can be included in the FORMAT UNIT command parameter list allows the initiator to control whether the drive returns completion status either after fetching and validating the Command Descriptor Block and parameter list or after the FORMAT UNIT command completes The FORMAT UNIT command parameters are described in Table 5 11 and Table 5 12 The time required for the FORMAT UN...

Страница 82: ...lue is 0 the data out buffer transfer does not occur CmpLst Complete List When the Complete List value is 1 the drive deletes its current Grown Defect List and starts a new one containing the Logical Block Numbers listed in the de fect list supplied by the initiator during this format operation are added to the list cre ating a new Grown Defect List When the Complete List value is 0 the drive adds...

Страница 83: ... in length Table 5 14 FORMAT UNIT Parameter List Data Format FmtDat CmpLst Defect List Length Contents of Grown Defect List after FORMAT UNIT Command Execution 0 0 N A All sectors found to be bad but not listed in the Primary Defect List or Grown Defect List are added to the Grown Defect List 1 0 0 Same as above 1 1 0 The existing Grown Defect List is discarded A new Grown Defect List is generated...

Страница 84: ...dicates that an initialization pattern descriptor Table 5 17 is included in the FORMAT UNIT parameter list immediately following the Defect List Header An Initialization Pattern bit of 0 indicates that an initialization pattern descriptor Table 5 17 is not included in the FORMAT UNIT parameter list and the drive will use its default initialization pattern of all zeros DSP The Disable Saving Parame...

Страница 85: ... is the least significant part of the address A value of FFFFFFFFh in bytes 4 to 7 is ignored Table 5 18 FORMAT UNIT Defect Descriptor Physical Sector and Bytes From Index Format 5 10 2 4 FORMAT UNIT Initialization Pattern Descriptor The Initialization Pattern option specifies that the logical blocks on the drive medium will contain a specified initialization pattern The Initialization Pattern des...

Страница 86: ...terminates the command with a CHECK CONDITION status The Sense Key is set to ILLEGAL REQUEST and the Additional Sense Code is set to INVALID FIELD IN PARAMETER LIST Name Description IP Modifier The Initialization Pattern Modifier must be 0 IP Type The Initialization Pattern Type field Table 5 21 indicates the type of pattern the drive uses to initialize each logical sector within the initiator acc...

Страница 87: ... EVPD 2 Page Code or Operation Code 3 Reserved 4 Allocation Length 5 Control Field Description CmdDt Command Support Data If CmdDt 0 and EVPD see below 0 the drive returns the Standard Inquiry Data If CmdDt 1 with EVPD 0 the drive returns the Command Data specified by Page Code Operation EVPD Enable Vital Product Data If EVPD 0 and CmdDt see above 0 the drive returns the Standard Inquiry Data If E...

Страница 88: ...ect Access Device 1 RMB 0 Device Type Modifier 0 2 ISO Version 0 ECMA Version 0 ANSI Version 3 SCSI 3 3 AERC TrmTsk Norm ACA Rsv d Response Data Format 2 4 Additional Length 5Bh 5 Reserved 6 Rsv d Rsv d Port MultiP Mchngr ACKQ REQQ Addr32 Addr16 7 RelAdr Wbus 32 Wbus16 Sync Linked Trans Dis Cmd Que SftRe 8 15 Vendor Identification MAXTOR 16 31 Product Identification 32 35 Product Revision Level 36...

Страница 89: ...nsfer Sync 1 The drive supports Synchronous Data Transfers Linked 1 Linked Commands are supported TransDis 1 Indicates that the drive supports CONTINUE TASK and TARGET TRANSFER DIS ABLE messages CmdQue 1 The drive supports Tagged Command Queuing SftRe 0 The drive implements the hard reset option in response to assertion of the SCSI Bus reset line VS 0 Vendor Specific Product Identification The val...

Страница 90: ...HDA Serial Number Table 5 29 Table 5 28 Unit Serial Number Page Data Format Table 5 29 Unit Serial Number Page Field Descriptions Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier 0 Peripheral Device Type 0 Direct Access Device 1 Page Code 00h 2 Reserved 3 Page Length 08h 4 10 Supported Page List Page Code Description Size In Bytes 00h Supported Vital Product Pages Page 11 80h Unit Serial Number Pag...

Страница 91: ...vice Type 0 Direct Access Device 1 Page Code 81h 2 Reserved 3 Page Length 07h 4 Rsvd Current Definition 5 SavImp 1 Default Definition is SCSI 2 U160 04h 6 SavImp 1 Supported 1 Definition is SCSI 3 U320 06h 7 SavImp 1 Supported 2 Definition is SCSI 3 U160 05h 8 SavImp 1 Supported 3 Definition is SCSI 2 U160 04h 9 SavImp 1 Supported 4 Definition is SCSI 2 U80 03h 10 SavImp 1 Supported 5 Definition i...

Страница 92: ...ply to the logical unit Table 5 33 and Table 5 34 Table 5 33 Device Identification Page Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier 0 Peripheral Device Type 0 Direct Access Device 1 Page Code 82h 2 Reserved 3 Page Length 1Ch 4 ASCII String Length 1Bh 5 31 SCSI 3 SCSI 2 SCSI 1 CCS byte of 0 Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier 0 Peripheral Device Type 0 Direct Access Devi...

Страница 93: ...evice 1h The identifier field is associated with the port that received the request 2h 3h Reserved Identifier Type This field specifies the format and assignment authority for the identifier Values in this field are Value Description 0h No assignment authority was used there is no guarantee that the identifier is glo bally unique vendor specific 1h The first 8 bytes of the Identifier field represe...

Страница 94: ...nd support data by setting the CmdDt bit of the INQUIRY command to 1 and specifying the SCSI operation code of the Command Descriptor Block CDB for which it wants information Format of the command support data and definitions of the fields follow in Table 5 37 Table 5 38 and Table 5 39 Table 5 37 Command Support Data Page Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Reserved 1 Page Code C1h 2 Reserved 3...

Страница 95: ...ode is not currently avail able In this case all data after Byte 1 is undefined 001b The device does not support the SCSI operation code requested In this case all data after Byte 1 is undefined 010b Reserved 011b The device supports the SCSI operation code in conformance with the SCSI standard 100b Vendor Specific 101b The device supports the SCSI operation code but in a vendor spe cific manner 1...

Страница 96: ...FF03 16h RESERVE 6 03 01 06 16FEFFFFFF03 17h RELEASE 6 03 01 06 17FEFF000003 1Ah MODE SENSE 6 03 01 06 1AE8FF00FF03 1Bh START STOP UNIT 03 01 06 1BE100000103 1Ch REC DIAG RESULTS 03 01 06 1CE1FFFFFF03 1Dh END DIAGNOSTIC 03 01 06 1DF700FFFF03 25h READ CAPACITY 03 01 0A 25E0FFFFFFFF0000 0103 28h READ 10 03 01 0A 28F8FFFFFFFF00FF FF03 2Ah WRITE 10 03 01 0A 2AF8FFFFFFFF00F FFF03 2Bh SEEK 10 03 01 0A 2...

Страница 97: ...000FF FF03 55h MODE SELECT 10 03 01 0A 55100000000000FFF F03 56h RESERVE 10 03 03 0A 5610FFFF000000FF FF03 57h RELEASE 10 03 03 0A 5710FFFF000000FF FF03 5Ah MODE SENSE 10 03 01 0A 5AE8FF00000000FF FF03 5Eh PERSIST RES IN 03 03 0A 5E1F0000000000FF FF03 5Fh PERSIST RES OUT 03 03 0A 5F1FFF00000000FF FF03 A0h REPORT LUNS 03 03 0C A00000000000FFFF FFFF0003 Hex Data Returned When INQUIRY is Received and...

Страница 98: ...40 and Table 5 41 respectively Table 5 40 LOG SELECT Command Descriptor Block Data Format Table 5 41 LOG SELECT Command Descriptor Block Field Descriptions Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 4Ch 1 Reserved PCR SP 2 PC Reserved 3 6 Reserved 7 8 Parameter List Length 9 Control Field Description PCR Parameter Code Reset Must be 1 Causes all the imple mented counters to be set to 0 SP Save Para...

Страница 99: ...wo types of parameters values and lists In general error and performance counters are reported as values For example the count of Hardware Idled Due To Invalid Command is returned as a 32 bit integer Events are reported as lists For example the last known failure might be reported with the ASCII string Last known failure code 960A X Table Table 5 42 lists the log pages supported by the drive Conta...

Страница 100: ...d are returned to the initiator SP The Save Pages bit specifies whether the parameters are to be saved This bit must be 0 indicating that no parameters are to be saved and are reset at power on or by a TARGET RESET PC The Page Control field defines the type of parameter values to be selected The field must be 01b indicating that the current values are to be returned Mode 11b return default val ues...

Страница 101: ...er Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Reserved Page Code 1 Reserved 2 3 Page Length n 3 4 to x 3 Log Parameter first length x 1 n y 1 to n Log Parameter last length y 1 Field Description Page Code The page code as given in Table 5 41 Page Length The allocation length for the page minus the 4 byte header Log Parameter One or more log data entities that are returned as par of a Log Page Each Log...

Страница 102: ...enabled DS Disable Save This parameter is 1 when parameters are not saved by the drive TSD Target Save Disable This parameter is 0 indicating that the drive provides a target spe cific way of saving parameters ETC Enable Threshold Comparison This parameter is always 0 The drive does not use thresholds for any of its parameters TMC Threshold Met Comparison This parameter is always 0 The drive does ...

Страница 103: ...ommand Field Descriptions Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 15h 1 Reserved PF Reserved SP 2 3 Reserved 4 Parameter Length List 5 Control Data Field Description PF Page Format The drive ignores the content of this field and produces a mode parameter list that contains a mode header optionally followed by a sector de scriptor and one or more pages that conform to the format shown here SP Sav...

Страница 104: ...ables or disables 4 01h Read Write Error Recovery Page Medium Access Error recovery and reporting procedures for READ and WRITE commands 12 02h Disconnect Reconnect Page Bus behavior during data trans fers 16 07h1 Verify Error Recovery Page Medium Access Error recovery and reporting procedures for the VERIFY command 12 08h1 Caching Page Cache policy 20 0Ah1 Control Mode Page Command processing pol...

Страница 105: ...E SELECT command since the drive was last reset or powered up the current pages contain Saved values if saved pages exist from a previous MODE SELECT command SP parameter Default values if pages have never been saved The drives generate a Unit Attention condition for all initiators except for the one that was the source of the MODE SELECT command whenever one initiator modifies the Mode parameters...

Страница 106: ...ptions Bit Byte 7 6 5 4 3 2 1 0 0 3 Mode Parameter Header 4 11 Block Descriptor optional 4 n or 12 n Page s optional Field Description Mode Parameter Header Contains information about the remainder of the pa rameter list and is always present see Table 5 55 and Table 5 56 Block Descriptor Allows the initiator to set the drive s Logical Block Size and number of Logical Block Addresses see Ta ble 5 ...

Страница 107: ... on the unit that are affected by the cur rent MODE SELECT command When this field is 0 the MODE SELECT parameters are put into effect for all logical blocks on the unit The maximum value allowed is the total number of initiator addressable logical blocks for the value specified in the Block Length field A value that is less than the maximum value will decrease the number of initiator acces sible ...

Страница 108: ... can be modified by the MODE SELECT command can be saved and can affect the drives processing The drive uses the value in the field and if the SP bit is set preserves the new value of the field in non volatile memory on the drive The PS bit must have been set when the mode page was returned with a MODE SENSE command Ignored A value in this field is never used or validated it is never looked at by ...

Страница 109: ...on Condition Page Page 0 Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code 00h 1 Page Length 02h 2 Reserved DUA Reserved 3 Reserved 00h Field Default Value Description PS 1 Parameters Savable This bit is only used with the MODE SENSE com mand A returned value of 1 indicates that the target is capable of sav ing the page in a non volatile vendor specific location The bit is reserved with the MODE SELECT...

Страница 110: ...ad sector the drive adds the revectored sector s Logical Block Number to the Grown Defect List Reallocation is done only when the drive is able to recover the sector s data un less the HrdBBR bit of the Maxtor Vendor Special Function Control Page is set When AWRE is 0 the drive does not automatically reallocate bad sectors encountered during a write operation See also Maxtor Unique Page 39h ARRE 1...

Страница 111: ...y Count 4 Specifies the number of retries attempted for a failed read operation Correction Span 170 Specifies the maximum number of bits in a data sector that the drive is allowed to correct A value less than the default value can cause an otherwise correctable error to be reported as uncorrectable If the initiator specifies a value larger than the default value the drive auto matically rounds dow...

Страница 112: ...Ratio indicates how full the buffer should be prior to requesting an interconnect tenancy Applies to READ operations only The default of 0 indi cates to the drive that it should use its default ratio Bus Inactivity Limit 0 The Bus Inactivity Limit indicates the maximum duration of any interconnect ten ancy during which no data is transferred Not supported by the drive Disconnect Time Limit 0 The D...

Страница 113: ...or etc DTDC Data Transfer Disconnect Control This field of three bits defines further restrictions when a discon nect is permitted These are as follows Value Description 000b Data transfer disconnect control is not used Disconnect is controlled by other fields in this page 001b A target will not attempt to disconnect once the data transfer of a command has started until all data of the command has...

Страница 114: ... ad ditional sense code When set to the default value of 0 it causes the drive to return GOOD status in cases where error recovery is invoked and is successful The only recoverable error that can occur during a VERIFY operation is a failed read that succeeds after retries DTE 0 Disable Transfer on Error Not supported by the drive DCR 0 Disable Correction When the value is 1 it disables ECC correct...

Страница 115: ...E SENSE command A returned value of 1 indicates that the target is capable of saving the page in a non volatile vendor specific location Bit reserved with MODE SELECT com mand WCE 1 Write Cache Enable The default value of 1 enables write back caching when processing a WRITE command When set to 0 the drive returns a GOOD status and COMMAND COMPLETE only after successfully writing all the data to th...

Страница 116: ...nt READ command If the number of sectors is greater the than the value specified anticipatory pre fetch is not performed for the command When 0 anticipatory pre fetch is disabled Ignored by the drive Minimum Pre fetch 0 This field indicates the number of sectors that are to be pre fetched See also MF Maximum Pre fetch 0x7F5 This field indicates the maximum amount of data to pre fetch into the cach...

Страница 117: ...h the MODE SENSE command A returned value of 1 indicates that the target is capable of saving the page in a non volatile ven dor specific location The bit is reserved with the MODE SELECT command GLTSD 0 Global Logging Target Save Disable If this bit 1 the ability to save log ages to disk is disabled If a LOG SELECT with the SP bit is received by the drive the current cu mulative values will be cl...

Страница 118: ...ssing of queued commands is resumed when a CA ECA condition is cleared DQue 0 Disable Queue When set to the default value of 0 the drive supports tagged command queuing When the Disable Queue bit is set to 1 tagged command queuing is disabled A subse quent tagged message from the initiator is rejected with a MESSAGE REJECT message and the I O process is executed as an untagged command EECA 0 AEN e...

Страница 119: ...saving this page in a non volatile vendor specific location This bit is reserved with the MODE SE LECT command ND Notched banded Drive A value of 0 indicates that the drive is not notched and that all other parameters in this page are returned as 0 The default value of 1 indicates that the device is notched For each supported ac tive notch value this page defines the starting and ending boundaries...

Страница 120: ...of the logical unit If the LPN value is 0 the 3 most significant bytes des ignate the ending cylinder and the least significant byte is the ending head number Pages Notched This is a 64 bit bitmap that indicates which MODE command pages contain pa rameters that may be different for different notches The most significant bit MSB corresponds to Page 3Fh Vendor Unique Caching Page and the least sig n...

Страница 121: ...I Primary Commands 2 standard for other port control page protocol identifiers The Synchronous Transfer Timeout field indicates the maximum amount of time in 1 millisecond increments that the target will wait before generating an error by doing an unexpected bus free The target will only go to a BUS FREE phase if one of the following events causes the timer once started to not reset or reload befo...

Страница 122: ...ILLEGAL FIELD IN PARAMETER LIST The Page Length field specifies the length in bytes of the subpage protocol specific mode page parameters after the Page Length field The Protocol Identifier field of 1h indicates the protocol that this mode page applies to a SPI SCSI device See the SCSI Primary Commands 2 standard for other port control page protocol identifiers Bit Byte 7 6 5 4 3 2 1 0 0 PS LONG 1...

Страница 123: ...erved Field Description Driver Strength The DRIVER STRENGTH field indicates the relative amount of driver source cur rently used by the driver The Driver Strength field affects both the strong and week drivers A larger value indicates more driver source current Driver Pre compensation The DRIVER PRECOMPENSATION field indicates the relative difference between the weak driver and the strong driver a...

Страница 124: ...re listed in Table 5 78 however the content of the fields is vendor specific Only values for the current I_T nexus are reported Table 5 78 Saved Training Configuration Subpage 02h Bit Byte 7 6 5 4 3 2 1 0 0 MSB Reserved 3 LSB 4 MSB DB 0 Value 7 LSB 64 MSB DB 15 Value 67 LSB 68 MSB P_ORCA Value 71 LSB 72 MSB P1 Value 75 LSB 76 MSB BSY Value 79 LSB 80 MSB SEL Value 83 LSB 84 MSB RST Value 87 LSB 88 ...

Страница 125: ...ions Bits field contain the negotiated protocol options for the current I_T nexus The TRANSCEIVER MODE field specifies the current bus mode of the target as defined in Table 5 80 The SENT PCOMP_EN bit contains the value of the PCOMP_EN bit sent by the target for the current I_T nexus The RECEIVED PCOMP_EN bit contains the value of the PCOMP_EN bit received by the target for the current I_T nexus T...

Страница 126: ... FACTOR field shall be set to the smallest value of the transfer period factor Maximum Req Ack Offset The MAXIMUM REQ ACK OFFSET shall be set to the largest value of the REQ ACK offset Maximum Transfer Width Exponent The MAXIMUM TRANSFER WIDTH EXPONENT shall be set to the largest value of the transfer width exponent Protocol Options Bits Supported The SCSI target port shall set the bits in the PRO...

Страница 127: ...h 2 Reserved 3 Reserved IdlEnb SbyEnb 4 7 Idle Timer 8 11 Standby Timer Field Default Value Description PS 0 Parameters Savable This bit is only used with the MODE SENSE command A re turned value of 1 indicates that the target is capable of saving the page in a non vola tile vendor specific location The bit is reserved with the MODE SELECT command IdlEnb 0 Enable Idle Timer This is a lower power c...

Страница 128: ...erval Timer LSB 8 11 MSB Report Count LSB Field Default Value Description PS 1 Parameters Savable This bit is only used with the MODE SENSE command A returned value of 1 indicates that the target is capable of saving the page in a non volatile ven dor specific location This bit is reserved with the MODE SELECT command PERF 1 Performance This bit enables disables performance sensitive functions For...

Страница 129: ...there is no required waiting between SMART reports NOTE The Interval Timer field does not apply to MRIE mode 6 Report Count 1 The value contained in this field indicates the number of times to report an informational exception condition to the application client A value of 0 in this field indicates there is no limit on the number of times the disk drive will report an informational exception condi...

Страница 130: ...ense code will indicate the cause of the informational excep tion condition The command that has the CHECK CONDITION will complete without error before any informational exception condition will be reported 5h Generate No Sense This method of reporting instructs the disk drive to report informational exception conditions by returning a CHECK CONDITION status on any command The sense key will be se...

Страница 131: ...ta Format and Table 5 90 for the Mode Parameter Block Descriptor Data Format See Table 5 50 for mode parameter block field descriptions Table 5 88 MODE SELECT 10 Command Descriptor Block Data Format Table 5 89 Mode Parameter Header 10 Byte Data Format Table 5 90 Mode Parameter Block Descriptor Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 55h 1 Reserved PF Reserved SP 2 6 Reserved 7 8 Para...

Страница 132: ...k to which the density code and block length fields apply A value of 0 in this field indicates that all of the remaining logical blocks on the disk have the medium characteristics specified Density Code The Density Code field is unique for each device type Direct access devices value is zero Block Length The value in this field specifies the length in bytes of each logical block described by the b...

Страница 133: ...Block Descriptor When the value is 0 the drive returns its Block Descriptor followed by the requested page s When the value is 1 the drive returns only the re quested pages PC Page Control Determines which type of page values are returned These values are 00b Current 01b Changeable 10b Default 11b Saved Page Code The Page Code field determines the pages to be returned to the initiator in the com m...

Страница 134: ...or is 0 If DBD is 1 then the Block Descriptor Length is eight 8 Number of Blocks The value in this field specifies the number of logical blocks on the unit that are affected by the current MODE SELECT command When this field 0 the MODE SELECT parameters are put into effect for all logical blocks on the unit The maximum value allowed is the total number of initiator addressable logical blocks for t...

Страница 135: ...5 96 lists read only mode pages Table 5 51 lists initiator changeable mode pages Table 5 96 Read Only Mode Pages Page Code Sub Page Page Name Reports the drive s Size bytes 03h Format Device Medium format 24 04h Rigid Disk Geometry Total cylinder head and rotational speed 24 ...

Страница 136: ...ber of physical tracks per cylinder Alternate Sectors Zone The number of spare locations within a notch Alternate Tracks Zone The drive does not have any alternate tracks Alternate Tracks Logical Unit The number of tracks reserved for defect handling Sectors Track The number of Physical Block Address sectors per track The value depends on the Notch value selected in the Notch and Partitions page D...

Страница 137: ... of Cylinders The number of physical cylinders that hold host data Number of Heads The number of heads that can access host data Starting Cylinder The value in this field is the physical cylinder at Write Precompensation which write precompensation is to begin The first cylinder number is 0 If the starting cylinder is equal to the value in the Number of Cylinders field write precompensation is dis...

Страница 138: ...t indicates the amount of rotational offset that the drive uses when synchronized The rotational offset is applied in the retarded di rection lagging the synchronized spindle master The value in the field is determined by the following formula Offset 0 255 256 For example a numerator of 128 indicates an offset of 1 2 revolution 180 The valid parameter values are 0 to 255 The specified value may be...

Страница 139: ...able 5 101 MODE SENSE 10 Command Descriptor Block Data Format Table 5 102 Mode Parameter Header 10 Byte Data Format Field Descriptions for the Mode Parameter Header are given in the table that follows Table 5 103 Mode Parameter Block Descriptor Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 5Ah 1 Reserved DBD Reserved 2 PC Page Code 3 Sub Page Code 4 6 Reserved 7 8 MSB Allocation Length LSB...

Страница 140: ... descriptor is supplied Density Code Ignored by the drive Number of Blocks The value in this field specifies the number of logical blocks on the unit that are affected by the current MODE SELECT command When this field 0 the MODE SELECT parameters are put into effect for all logical blocks on the unit The maximum value al lowed is the total number of initiator addressable logical blocks for the va...

Страница 141: ...SERVE 10 RESERVE 6 extent reservations or SCSI Media Changer SMC element reservations active receives a PERSISTENT RESERVATION IN command the PERSISTENT RESERVATION IN command is rejected with a RESERVATION CONFLICT status reported Table 5 105 illustrates the format of the PERSISTENT RESERVATION IN command Table 5 106 explains the data fields of the command Table 5 105 PERSISTENT RESERVATION IN Co...

Страница 142: ... about Read Keys parameter data A Read Reservation service action requests that the device server return a parameter list that contains a header and a complete list of all persistent reservations that are presently active in the device server and its extents Note that duplicate persistent reservations from the same initiator are not reported Refer to Table 5 111 and Table 5 110 for information abo...

Страница 143: ...eld allows the application client that examines the value to verify that the configuration of the initiators attached to a logical unit has not been modified by another application client without any notification of the application client doing the examination Additional Length This field contains the count of the number of bytes that are in the Reservation Key list bytes 8 n Note that this field ...

Страница 144: ... in the Generation field is set to 0 as part of the power on or reset processes The value in the Generation field allows the application client that examines the value to verify that the configuration of the initiators attached to a logical unit has not been modified by another application client without any notification of the application client doing the examination Additional Length This field ...

Страница 145: ... a part of the logical unit defined as an extent or to an element The values for the Scope field are Code Name Description 0h LU Logical Unit Persistent reservation applies to the full logical unit The LU scope is therefore imple mented by all device servers that implement PERSISTENT RESERVATION OUT 1h Extent Persistent reservation applies to the specified extent When Extent is the scope it indica...

Страница 146: ...NS Allowed any initiator may reserve the logical unit extents or elements as long as the persistent reservations do not conflict with any reservations already known to the device server 3h Exclusive Access READS Exclusive any command from any initiator other than the initiator holding the persistent reservation that attempts a transfer from the disk results in a reservation conflict WRITES Exclusi...

Страница 147: ...flict with any reservations already known to the device server 6h Exclusive Access Registrants Only READS Exclusive any command from an initiator that has not previously performed a Register service action with the device server that attempts a transfer from the disk results in a reservation conflict WRITES Exclusive any command from an initiator that has not previously per formed a Register servi...

Страница 148: ... N N Y Y Y O Y Y Y O Y Y Y O N N N N Y Y Y O Y Y Y O LU WRITE Exclusive EX Y Y Y O Y Y Y O Y Y Y O Y Y Y O Y Y Y O Y Y Y O Y Y Y O LU READ Exclusive EX Y Y Y O Y Y Y O Y Y Y O Y Y Y O Y Y Y O Y Y Y O Y Y Y O LU Exclusive Access EX Y Y Y O Y Y Y O Y Y Y O Y Y Y O Y Y Y O Y Y Y O Y Y Y O LU Shared Access EX N N N N Y Y Y O Y Y Y O Y Y Y O N N N N Y Y Y O Y Y Y O LU WRITE Exclusive RO EX Y Y Y O Y Y ...

Страница 149: ... RESERVATION OUT command to preempt those reservations if necessary Note that since persistent reservations are not reset by the TARGET RESET task management function or other global actions they can be used to enact device sharing among multiple initiators The PERSISTENT RESERVATION OUT and PERSISTENT RESERVATION IN commands provide the means for resolving contentions in multiple initiator system...

Страница 150: ...ON OUT 1h Extent Persistent reservation applies to the specified extent When Extent is the scope it indicates that the persistent reser vation applies to the extent of the logical unit defined by the Scope Specific Address and Extent Length fields in the PER SISTENT RESERVATION OUT command s parameter list Note that an extent is defined only for devices defining contig uous logical block addresses...

Страница 151: ...ion key set to 0 When a reservation key has not yet been established or when the reservation key has been removed a reservation key of 0 is used when the initiator performs a PERSISTENT RES ERVATION OUT with the Register service action When the reservation has been removed no information is reported for the initiator in the Read Keys service action of the resulting PERSISTENT RESERVATION IN comman...

Страница 152: ...g persistent reservation held by the initiator making the request are not errors An active persistent reservation may also be released by 1 Powering off When the most recent APTPL value received by the device server is 0 a power off performs a hard reset clears all persistent reservations and removes all registered reservation keys or 2 Executing a PERSISTENT RESERVATION OUT command from another i...

Страница 153: ...initiator The persistent reservation thus created by the pre empting initiator is defined by the Scope and Type fields of the PERSISTENT RESERVATION OUT command and the correspond ing fields of the command s parameter list The registration keys for the pre empted initiators are removed by the Pre empt service ac tion the reservation key for an initiator that has performed a Pre empt service action...

Страница 154: ...hus created by the pre empting initiator is defined by the Scope and Type fields of the PERSISTENT RESERVATION OUT command and the correspond ing fields of the command s parameter list The Pre empt Clear service action clears any ACA or CA condition associated with the initiator that is pre empted and clears any tasks with an ACA attribute from that initiator Any Asynchronous Event Reporting opera...

Страница 155: ...ERVATIONS Allowed any initiator may reserve the logical unit extents or elements as long as the persistent reservations do not conflict with any res ervations already known to the device server 2h READ Exclusive READS Exclusive any command from any initiator other than the initiator that holds the persistent reservation that attempts a transfer from the disk results in a reservation conflict WRITE...

Страница 156: ...ient on any initiator may execute commands that perform transfers from the disk to the initiator WRITES Exclusive any command from an initiator that has not previously performed a Register service action with the device server that attempts a transfer to the disk results in a reservation conflict ADDITIONAL RESERVATIONS Allowed any initiator may reserve the logical unit extents or elements as long...

Страница 157: ...ch any registered keys results in the device server returning a RESERVATION CONFLICT status Scope Specific Address If the Scope is an Extent reservation this field contains the Logical Block Address of the extent and the Extent Length field bytes 22 23 contain the number of blocks in the extent If the Scope signifies an Element reservation the Scope Specific Address field contains the Ele ment Add...

Страница 158: ...red Valid Ignored Reserve LU Valid Ignored Ignored Reserve Extent Valid Ignored Extent Valid Reserved Element Valid Ignored Ignored Release LU Valid Ignored Ignored Release Extent Valid Ignored Extent Valid Release Element Valid Ignored Element Valid Clear Ignored Ignored Ignored Ignored Clear Ignored Ignored Ignored Ignored Pre empt LU Valid Valid Ignored Pre empt Extent Valid Valid Extent Valid ...

Страница 159: ...ble 5 122 READ 6 Command Data Format Table 5 123 READ 6 Command Field Descriptions Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 08h 1 Reserved Logical Block Address 2 3 Logical Block Address continued 4 Transfer Length 5 Control Field Description Logical Block Address Specifies the logical block address where the read operation will begin Transfer Length Specifies the number of contiguous logical blo...

Страница 160: ... policies When the value is 1 the drive assigns to logical blocks accessed by the READ 10 command the lowest priority for being fetched into or retained by the cache FUA Force Unit Access When the value is 0 the drive is allowed to satisfy the read with cache resident data A value of 1 indicates that the drive accesses the media in performing the command before returning GOOD status RelAdr Relativ...

Страница 161: ...nd verification work Both the READ BUFFER and the WRITE BUFFER commands have a buffer ID and a buffer offset data field defined in their Control Descriptor Block In the Combined Header and Data Mode if both are set to 0 reference is made to a single 512 byte buffer set aside in the drive controller s data memory independent of cache This allows an initiator to verify the data path from the control...

Страница 162: ... same as if a Buffer ID of one were specified Buffer Offset When non zero the value of Buffer Offset can range from 0 to one less than the number of sectors track multiplied by 512 This value must be either a zero or a multiple of 512 Allocation Length Must be between zero and the maximum number of sectors track multiplied by 512 0011b Descriptor Only When requesting a descriptor a description of ...

Страница 163: ...ntrol Field Description RelAdr Relative Addressing is not supported by the drive the field must be 0 Logical Block Address Used in conjunction with the PMI bit Must be 0 when the PMI bit is 0 PMI Partial Media Indicator When the value in the field is 0 the Returned Log ical Block Address Table 5 130 is that of the last logical sector of the log ical unit When the value is 1 the Returned Logical Bl...

Страница 164: ...ctively The data sent to the host in the command s data in buffer transfer consists of a four byte Defect List header Table 5 135 and Table 5 136 followed by any Defect Descriptors Table 5 133 and Table 5 134 The READ DEFECT DATA 10 Command Descriptor Block is shown in Table 5 139 the data fields are described in Table 5 132 Table 5 131 READ DEFECT DATA 10 Command Data Format Bit Byte 7 6 5 4 3 2 ...

Страница 165: ...ifies the format in which the defect descriptors are to be returned The supported for mats are 000b Block Format Table 5 133 1 100b Bytes from the Index Figure 5 63 The data returned from this mode does not include defects outside normal user space 101b Physical Sector Format Table 5 134 Default format The defects returned from this mode do not include de fects outside normal user space Allocation...

Страница 166: ...1 0 0 Reserved 1 Reserved Plist Glist Defect List Format 2 3 Defect List Length Field Description PList Primary Defect List When the value is 0 the returned data does not include the Primary Defect List When the value is 1 the returned data includes the Primary Defect List GList Grown Defect List When the value is 0 the returned data does not include the Grown Defect List When the value is 1 the r...

Страница 167: ... returned in order of occurrence When both PList and GList are set to 1 the Primary Defect List and the Grown Defect List are returned The Plist is returned followed by the Glist the lists are not merged When both are set to 0 only the Defect List Header Table 5 141 is reported to the initiator Defect List Format This field specifies the format in which the defect descriptors are to be returned Th...

Страница 168: ...fect 4 7 Defective Bytes From Index Defective Sector Number Bit Byte 7 6 5 4 3 2 1 0 0 Reserved 1 Reserved Plist Glist Defect List Format 2 3 Reserved 4 7 Defect List Length Field Description PList Primary Defect List When the value is 0 the returned data does not include the Primary Defect List When the value is 1 the returned data includes the Primary Defect List GList Grown Defect List When the...

Страница 169: ...on Code 3Eh 1 Reserved Correct RelAdr 2 5 Logical Block Address 6 Reserved 7 8 Byte Transfer Length 562 9 Control Field Description Correct When the value in this field is 1 the drive corrects the data by the ECC before transferring it to the initiator When the value is 0 the drive does not perform ECC correction on the data NOTE This bit not the DCR bit of the Read Recovery page governs the effec...

Страница 170: ...SSIGN BLOCKS Defect List Header Field Description Table 5 149 REASSIGN BLOCKS Defect Descriptor Data Format The drive returns a CHECK CONDITION status if it cannot complete the command If this happens because the drive ran out of spare sectors the drive sets the sense key to MEDIUM ERROR and the additional sense code to NO DEFECT SPARE LOCATION AVAILABLE The sense key and additional sense key are ...

Страница 171: ...turn in response to the next RECEIVE DIAGNOSTICS RESULTS command The page specified in the most recent SEND DIAGNOSTICS command is always the page returned in response to the RECEIVE DIAGNOSTICS RESULTS command Table 5 151 RECEIVE DIAGNOSTIC RESULTS Command Descriptor Block Data Format Table 5 152 RECEIVE DIAGNOSTIC RESULTS Command Descriptor Block Field Descriptions Page Code Description Size In ...

Страница 172: ...E DIAGNOSTIC RESULTS command to the drive The listing of Supported Diagnostic Pages is returned by the drive 5 28 2 Translate Address Page 40h The Translate Address Page allows the initiator to translate a logical sector address physical address or physical bytes for an index address into any one of the other formats The address to be translated is passed to the drive with the SEND DIAGNOSTIC comm...

Страница 173: ...lated Address Head Number y 4 y 7 Translated Address Sector Number or Bytes From Index Field Description Supplied Format The Supplied Format field specifies the format of the following Translate Address field Must be 000b which specifies the LBA format RAREA Reserved Area is not used Must be 0 ALTSEC An Alternate Sector bit of 1 indicates that the translated address from the SEND DIAGNOSTIC comman...

Страница 174: ... 3 2 1 0 0 Operation Code 17h 1 Reserved 3rdPty Third Party Device ID Extent 2 Reservation Identification 3 4 Reserved 5 Control Field Description 3rdPty Third Party Release allows an initiator to release a logical unit that was previously reserved If the value in this field is 0 third party release is not requested When the value is 1 the drive releases the specified logical unit but only if the ...

Страница 175: ...s 0 third party release is not requested If 3rdPty 1 then the device server will release the specified logical unit but only if the initiator ID 3rdPty bit and third party device ID are identical when compared to the RESERVE command that established the reservation LongID If the Long ID bit is set to 1 the Parameter List Length is 8 and the eight bytes of the parameter list carry the device ID of ...

Страница 176: ...dition Illegal Request Allocation Length If the length is not sufficient to contain all of the parameter data the first portion of the data is returned and this is not considered to be an error The actual length of the parameter data is available in the Identifier Length field in the parameter data If the remainder of the parameter data is required the application client must send a new REPORT DEV...

Страница 177: ...s the number of logical unit numbers reported multiplied by eight If the allocation length in the CDB is too small to allow transfer of information about all of the logical units configured the LUN list length value is not adjusted to reflect the truncation The data format for the LUN Reporting Parameter List is described in Table 5 166 Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code A0h 1 5 Reserved 6 ...

Страница 178: ...tions are shown in Table 5 167 and Table 5 168 respectively Table 5 167 REQUEST SENSE Command Descriptor Block Data Format Table 5 168 REQUEST SENSE Command Descriptor Block Field Description Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 03h 1 3 Reserved 4 Allocation Length 5 Control Field Description Allocation Length The drives can return a maximum of 18 bytes of sense data The initiator should set ...

Страница 179: ...NAL SENSE INFORMATION if it has no sense data available for the initiator For Parallel SCSI disk drives sense data is available if the previous command from the initiator terminated with a CHECK CONDITION status or if the previous command from the initiator ended with an unexpected BUS FREE error REQUEST Clearing Sense Data Sense data is cleared from the drive s memory by one of the following cond...

Страница 180: ...vered parity error is detected on the data bus Note that any of the previous conditions overwrites the current sense data with the sense data describing the error encountered by the REQUEST SENSE command that is for the condition stated in the first bulleted entry the new sense data reflects that a non zero reserved bit was detected in the Command Descriptor Block The drive returns a maximum of 18...

Страница 181: ...upported Additional Sense Codes and Sense Code Qualifiers are described in Table 5 173 and the Sense Key Specific Field Contents in Table 5 174 Table 5 169 Sense Data Format for Error Code 70h or 71h Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Valid Error Code 70h or 71h 1 Segment Number 00h 2 FileMrk 0 EOM 0 ILI Rsvd Sense Key 3 6 Information 7 Additional Sense Length 0Ah 8 11 Command Specific Informa...

Страница 182: ...he command This difference is called the residue 3 A description of each of the drive s supported commands definition for this field is contained in Ta ble 5 172 Additional Sense Length The Additional Sense Length field indicates the number of addition sense bytes that can follow If the Allocation Block Length specified in the Command Descriptor Block is too small to transfer all of the additional...

Страница 183: ...etc ILLEGAL REQUEST 5h The drive detected an illegal parameter in the Command Descriptor Block or in the ad ditional parameters supplied as data for some commands If the drive detects an invalid parameter in the Command Descriptor Block it terminates the program without altering the medium If the drive detects an invalid parameter in the additional parameters sup plied as data the drive may have a...

Страница 184: ...gal defect descriptor encountered in the Defect Descriptor List SEEK 6 10 ILLEGAL REQUEST The first invalid sector address detected by the command VERIFY RECOVERED MEDIUM ERROR WRITE 6 10 error recovery qualifiers apply Contains the Logical Block Address that may have failed the write or verify compare operation For a RECOVERED ERROR the last Logical Block Address in the error is re turned for a M...

Страница 185: ...e error recovered with auto reallocation 0x15 0x02 Positioning error detected by read recovered 0x15 0x80 Positioning error detected by read on write recovered 0x15 0x81 Servo Write Not OK assertion recovered 0x15 0x82 Servo Read Not OK assertion recovered 0x15 0x83 Spoke address error recovered 0x16 0x00 Data synchronization mark error recovered 0x16 0x83 Spoke synchronization mark error recovere...

Страница 186: ...ngine timeout recovered 0x18 0x00 Recovered data with ECC applied 0x18 0x02 Recovered data data auto reallocated 0x18 0x05 Recovered data recommend reassignment TA err 0x1C 0x00 Requested Defect List Not Found 0x40 0x85 EDC check failed recovered 0x40 0x86 Controller FIFO over underflow error recovered 0x40 0x8C LBA mismatch error recovered 0x41 0x86 Required HW process did not complete recovered ...

Страница 187: ... Unknown HW problem 0x40 0x81 Drive Not Ready NVR is Corrupt 0x40 0x82 Drive Not Ready CP section of EEPROM is Corrupt 0x40 0x83 Drive Not Ready Failed HDA test 0x40 0x84 Drive Not Ready Failed PCB test 0x40 0x85 Drive Not Ready PM section of EEPROM is Corrupt 0x40 0x86 Drive Not Ready Flash vector table is Corrupt 0x40 0x99 ROM and resident code are incompatible 0x03 Medium Error 0x02 0x00 No see...

Страница 188: ...Block Slow PLL Error 0x80 0x11 Split SLow PLL Error 0x80 0x12 Block state machine disabled error 0x82 0x20 Spoke to spoke time error 0x04 Hdwe Error 0x02 0x00 No seek complete 0x03 0x00 Write fault 0x06 0x80 PES calibration results are bad 0x06 0x81 BIAS calibration results are bad 0x06 0x82 ID GAMMA calibration values out of range 0x06 0x83 Recal record timeout 0x06 0x84 Seek fail during feed for...

Страница 189: ... 0x06 0xA1 Successful sync not in the erase band 0x06 0xA2 ID GAMMA projected value out of range 0x06 0xA3 OD GAMMA calibration values out of range 0x06 0xA4 OD GAMMA projected value out of range 0x06 0xA5 Could not start estimator on printed media 0x06 0xA6 Too many spoke errors on printed media 1st 0x06 0xA7 Too many spoke errors on printed media 2nd 0x06 0xA8 Too much variation in position at c...

Страница 190: ...09 0xAF Svo Not spinning at proper speed 2nd 0x09 0xB0 Svo Confined sync timeout 0x09 0xB1 Svo R W serial timeout 0x09 0xB2 Svo Context Acquire Timeout 0x09 0xB3 Svo Context Aquire Data Addr Valid Timeout 0x09 0xB4 Svo Context Aquire Bad Track Number 0x09 0xB5 Svo Notch engine timeout 0x15 0x00 Random positioning error 0x15 0x02 Positioning error detected by read 0x32 0x00 A list is full 0x32 0x80...

Страница 191: ...rd did not complete 0x40 0xA5 Read seek failed 0x40 0xA6 Write seek failed 0x40 0xA7 Raw seek failed 0x40 0xA8 Servo Diagnostic Test running 0x40 0xA9 Invalid 97 98 super cmd seq Must send 97 before 98 0x40 0xAA Super Command 97 already running 0x40 0xAB Complex magnitude is zero 0x40 0xAC Could not complete the low level BCV write function 0x40 0xAD Got a divide by zero error in complex divide 0x...

Страница 192: ...e 0x06 Unit Attn 0x0B 0x01 SMART overtemperature trip 0x28 0x00 Not Ready to Ready transition 0x29 0x01 Power On Reset occurred 0x29 0x02 SCSI bus reset occurred 0x29 0x03 Bus device reset message 0x29 0x04 Recovered from bug check 0x29 0x05 Bus mode changed to single ended 0x29 0x06 Bus mode changed to LVDS 0x29 0x86 Reset after too many ACK s 0x2A 0x01 Mode parameters were changed 0x2A 0x02 Log ...

Страница 193: ...5 0x00 Abort Reselection failed 0x47 0x00 Abort Bus parity error 0x47 0x01 Abort pCRC error detected 0x47 0x02 Abort Bus parity error during ST data phase 0x47 0x03 Abort Information Unit CRC error 0x47 0x04 Abort Async Protection error 0x48 0x00 Abort Initiator detected error 0x49 0x00 Aborted with invalid Message 0x4E 0x00 Overlapped commands attempted 0x0E 0x1D 0x00 Data miscompare error Sense ...

Страница 194: ...ription SKSV Sense Key Specific Valid C D Command Data When the value in this field is 1 the Field Pointer identifies the first byte in error in the Command Descriptor Block When 0 the Field Pointer identifies the first byte in error in the data parameters sent by the initiator in the data out buffer transfer BPV Bit Pointer Valid The drive does not support Bit level resolution the bit value must ...

Страница 195: ...ption of the data is contained in Table 5 180 Table 5 179 MEDIUM ERROR or RECOVERED ERROR Sense Key Retry Count Data Format Table 5 180 MEDIUM ERROR or RECOVERED ERROR Sense Key Retry Count Field Descriptions Bit Byte 7 6 5 4 3 2 1 0 15 SKSV 1 Reserved 16 17 Retry Count Field Description SKSV Sense Key Specific Valid Retry Count The number of times an I O operation was retried ...

Страница 196: ...ty Device ID field is valid Third Party Device ID Required and used only when the 3rdPty bit is set in which case this field specifies the SCSI ID 0 through 7 only of the initiator to be granted the reservation of the logical unit The drive preserves the reservation until one of the following occurs It is superseded by another valid RESERVE command from the initiator It is released by the same ini...

Страница 197: ...drive preserves the reservation until one of the following occurs It is superseded by another valid RESERVE command from the initiator It is released by the same initiator It is released by a TARGET RESET message from any initiator It is released by a hard reset condition The drive ignores any attempt to release the reservation made by any other initiator For example if ID7 sends ID2 a Third Party...

Страница 198: ...e 5 188 Table 5 188 RESERVE 10 ID Only Parameter List Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Reserved RelAdr Reservation Type 1 3 MSB Number of Blocks LSB 4 7 MSB Logical Block Address LSB Reservation Type Description 00b READ shared No write operations are permitted by any initiator to the re served extent Any initiator may read from the extent 01b WRITE exclusive No other initiator may write to ...

Страница 199: ... may send them to a different cylinder If periodic calibrations have been disabled by using the MAN bit byte 3 bit 6 of the Vendor Unique Function Control Page in the MODE SELECT command 15h the REZERO UNIT command will cause the drive to perform the next scheduled calibration The data format is shown in Table 5 189 Table 5 189 REZERO UNIT Command Descriptor Block Data Format Bit Byte 7 6 5 4 3 2 ...

Страница 200: ...e heads at the correct Logical Block Address When the heads are at the specified Logical Block Address they are not guaranteed to stay in that position since periodic calibrations may send them to a different cylinder The data format is shown in Table 5 190 Table 5 190 SEEK 6 Command Descriptor Block Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 0Bh 1 Reserved Logical Block Address 2 3 Log...

Страница 201: ... placing the heads at the correct Logical Block Address When the heads are at the specified Logical Block Address they are not guaranteed to stay in that position since periodic calibrations may send them to a different cylinder The data format is shown in Table 5 191 Table 5 191 SEEK 10 Command Descriptor Block Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 2Bh 1 Reserved 2 5 Logical Block...

Страница 202: ...the other self test function codes for example Translate Address page 001b Background short self test The device server will start its short self test routine in the back ground mode 010b Background extended self test The device server will start its extended self test routine in the background mode 011b Reserved 100b Abort background self test Abort the current self test running in background mod...

Страница 203: ...ils This field is ignored if the PF bit is 1 DevOnl Any value in this field is ignored by the drive UnitOfl Any value in this field is ignored by the drive Parameter List Length When the Parameter List Length field is non zero the value specifies the length in bytes of the parameter list that is to be transferred from the initiator to the drive during the command s data out buffer transfer This fi...

Страница 204: ...Diagnostic Page List that can be supplied with a SEND DIAGNOSTIC command to request that the Supported Diagnostic Page List be returned after the next RECEIVE DIAGNOSTIC RESULTS command Table 5 194 Supported Diagnostic Page List Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Page Code 00h 1 Reserved 2 3 Page Length 00h ...

Страница 205: ...mand to request that the Translate Address Page be returned after the next RECEIVE DIAGNOSTIC RESULTS command Table 5 195 Translate Address Page Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Page Code 40h 1 Reserved 2 3 Page Length 0Ah 4 Reserved Supplied Format 000b LBA 5 Reserved Translate Format 101b Physical Sector 6 9 Address to Translate LBA Format 10 13 Reserved ...

Страница 206: ... Data Format Table 5 199 SET DEVICE IDENTIFIER Parameter List Field Descriptions Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code A4h 1 Reserved Service Action 06h 2 5 Reserved 6 9 MSB Parameter List Length LSB 10 Reserved 11 Control Field Description Service Action Must 06h Any other value forces Check Condition Illegal Request Parameter List Length This field specifies the length in bytes of the Identi...

Страница 207: ... UNIT Command Field Descriptions Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 1Bh 1 Reserved Immed 2 3 Reserved 4 Power Conditions Reserved LoEj Start 5 Control Field Description Immed Immediate When 1 the drive returns GOOD status immediately after validating the Command Descriptor Block but before the drive spins up When 0 the drive does not return GOOD status until after the drive has spun up succ...

Страница 208: ...ock Data Format Table 5 203 SYNCHRONIZE CACHE Command Field Descriptions Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 35h 1 Reserved Immed 0 RelAdr 2 5 Logical Block Address 6 Reserved 7 8 Number of Blocks 9 Control Field Description Immed Immediate Must be 0 The drive returns status after the synchronize cache operation has been completed RelAdr Relative Address Must be 0 Relative addressing is not ...

Страница 209: ...ccess commands that is READ WRITE VERIFY etc If the drive is not ready to receive medium access commands it returns CHECK CONDITION status with the appropriate sense keys and qualifiers The data format is described in Table 5 204 Table 5 204 TEST UNIT READY Command Descriptor Block Data Format Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 00h 1 4 Reserved 5 Control ...

Страница 210: ...cessed by this command the lowest priority for being fetched into or retained by the cache When DPO 0 the priority will be determined by fields in the Caching page BytChk Byte Check When the value is 1 the drive performs a byte by byte comparison of the data on the medium with the data sent by the initiator in the data out buffer transfer When 0 the drive performs a medium verification with no dat...

Страница 211: ...le 5 208 WRITE 6 Command Field Descriptions Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 0Ah 1 Reserved Logical Block Address 2 3 Logical Block Address 4 Transfer Length 5 Control Field Description Logical Block Address The address of the first logical block where the Write operation will occur Transfer Length The number of contiguous logical blocks of data to transfer A transfer length of 0 indicate...

Страница 212: ...PO is 0 the drive tells the controller to cache this WRITE data in a normal man ner NOTE The drive normally assigns a low priority to write caching Therefore the DPO bit in a WRITE command is ignored FUA Force Unit Access When 1 the data must be written on the medium before GOOD status is returned When 0 GOOD status may be returned after the data is fetched from the ini tiator and before it is wri...

Страница 213: ...rming a background copy oper ation and does not want to wipe out the drive s cache When DPO is 0 the drive tells the controller to cache this WRITE data in a normal manner NOTE The drive normally assigns a low priority to write caching Therefore the DPO bit in a WRITE command is essentially ignored BytChk Byte Check When 1 the drive performs a byte by byte comparison of the data written on the med...

Страница 214: ...he data format and field descriptions are shown in Table 5 213 and Table 5 214 respectively Both the READ BUFFER and WRITE BUFFER commands have a Buffer ID and a Buffer Offset data field defined in their Command Descriptor Block In combined Header and Data Mode if both are set to 0 reference is made to a single 512 byte buffer set aside in the controller s data memory independent of cache This all...

Страница 215: ...2 Parameter List Length This value must be a multiple of 512 The maximum value for this field is one more than the number of sectors track times 512 The minimum value is 0 0101b Download Microcode and Save In this mode a microcode image is transferred to the drive and if valid is saved in the controller s non volatile memory This image must be transferred with all buffers of the same size the last...

Страница 216: ...ddress 6 Reserved 7 8 Byte Transfer Length 562 9 Control Field Description RelAdr Relative Address This drive does not support this feature the field must be 0 Logical Block Address The address of the first logical sector where the Write operation will occur Byte Transfer Length Must be 562 This value reflects the number of bytes spanned by the ECC including the ECC itself rounded up to the next w...

Страница 217: ... support ORCA Optimized Reordering Command Algorithm and tagged command queuing for greater throughput SCAM 2 SCSI Configured AutoMatically Auto ID configuration 8 MB Track oriented segmented cache buffer with prefetch Automatic Power Management System with power saving sub states 15 000 rpm rotational speed yielding 2 ms average latency 3 2 ms 3 6 ms average read write random seek time for 18 36 ...

Страница 218: ...mand basis With this unique system multiple commands for a particular track are coalesced in the buffer before accessing the media As a result multiple I O commands that address a single track are logically combined to avoid multiple disk accesses on multiple rotations Since most reads and writes are sequential this greatly increases throughput for most applications 6 2 PREFETCH The drive supports...

Страница 219: ... commenced from the buffer starting at the corresponding place in the data 6 5 DISCONNECT RECONNECT System throughput can be improved by disconnecting the drive from the initiator during physical positioning operations thereby freeing up the SCSI bus for other I O processes After the drive has determined that there will be a delay it disconnects itself from the SCSI bus by sending a DISCONNECT mes...

Страница 220: ...in hardware on the fly with no loss in throughput 6 9 2 Transfer Error Protection An end to end error detection code EDC protects data from any errors introduced by internal buses the disk controller chip the data cache or the SCSI interface An EDC is calculated and added to each data block as the data arrives from the SCSI bus after SCSI bus parity is checked The EDC is stored with the data and p...

Страница 221: ...ritten correctly The Verify Error Recovery Page of the MODE SELECT COMMAND controls the drive s response to error conditions that arise during the VERIFY command and during the verify operation of the WRITE AND VERIFY command 6 10 TAGGED COMMAND QUEUING The drive supports all three SCSI defined queue tag messages When queuing is enabled default condition the drive can accept any of the following S...

Страница 222: ...IVE This is the highest power consumption state of the drive A media access command is acted upon immediately by the drive The drive remains in the UNIT READY state NOT READY The drive is powered on but cannot be addressed An example of this state is during spin up In other cases the drive may require operator intervention This state will return a Status Check condition The Power Condition Page co...

Страница 223: ...the drive can verify and maintain the integrity of its operations and optimize performance The operations performed include those listed below Move Switch idle heads Adaptive seek profile calibration ROM checksum Such periodic functions can make the drive appear to be active when no commands are outstanding because the drive appears to be seeking Periodic calibrations occur only after the drive ha...

Страница 224: ... and detent Margin the error tolerance of sync mark detection Force sync mark detection while retrying Skip Sector Rereads Retries each without one of eight earlier servo blocks Correction of the bad data with the software ECC algorithm Switching the bias current of the MR head between retries TA baseline compensation and other TA recovery methods 6 15 3 Reallocation of Bad Blocks Most of the spar...

Страница 225: ...t the slower legacy data rates Differential SCSI operation has the advantage of higher reliability of data transfer through increased immunity to electrical noise Differential signaling uses a two wire active system in which current from each wire flows in opposite directions and reverses direction for a signal transition The direction of current flow determines whether the voltage levels on the t...

Страница 226: ...for the Maxtor Atlas 15K disk drive are an all LVD or LVD MSE bus in which case it operates in its LVD mode or a bus that contains at least one single ended device in which case the Maxtor Atlas 15K disk drive operates in single ended mode HVD mode is not supported by the Maxtor Atlas 15K disk drive Signal levels on an HVD bus can reach as high as 15 volts due to allowed common mode transients 6 1...

Страница 227: ...llowing the REQ and ACK signals to run at half the frequency that would be required under the traditional Single Transition ST SCSI clocking scheme for the same data rate Lower frequency clocks result in a more reliable bus Figure 6 1 illustrates the difference between DT and ST clocking Figure 6 1 ST and DT CLocking The Maxtor Atlas 15K disk drive can operate at speeds up to 80 MB sec in either S...

Страница 228: ...ow bus segment between them DT devices connect through an ST expander Broken connections It may also detect poor quality cables marginal quality signals and improper termination Domain validation is implemented using standard SCSI commands and new versions of the WRITE BUFFER and READ BUFFER commands The sequence of commands used for domain validation may vary from system to system The selection o...

Страница 229: ...the maximum negotiated data rate of up to 320 megabytes per second A method to transfer packets for a number of I O processes without an intervening physical disconnection A method to minimize overhead by eliminating several bus phase changes per I O process 6 18 HOT PLUGGING REMOVAL AND INSERTION OF SCSI DEVICES The Maxtor Atlas 15K SCA low voltage differential LVD disk drives are designed for us...

Страница 230: ...sients usually via a low pass filter LVD SCSI devices may require more stringent system design to tolerate transients that occur during Case 4 insertion or removal System integrators should consider the following when designing their backplanes or buses 1 Larger connector to connector spacing causes the transients associated with hot swapping to be attenuated dramatically before reaching an operat...

Страница 231: ... now ANSI Standard No X3 277 1996 Documents 20 Mega transfer second operation Defined active negation SPI 4 Specification Revision 10 Defines LVD signaling Defines Multimode LVD SE transceivers Defined LVD active terminators Defines Multimode LVD SE terminators Defines new functionality for the DIFFSENS pins Documents 40 Mega transfer second operation Documents LVD connector pin assignments for LV...

Страница 232: ...Feature Descriptions 6 16 Maxtor Atlas 15K ...

Страница 233: ...ent Terminology Table A 1 contains the SCSI 3 equivalent terms for common terms used in SCSI 2 documents Table A 1 SCSI 2 SCSI 3 Equivalent Terminology SCSI 2 SCSI 3 abort abort task set abort tag abort task bus device reset target reset clear queue clear task set command complete task complete continue I O process continue task head of queue tag head of queue ordered queue tag ordered incorrect i...

Страница 234: ...SISTENT RESERVE OUT 5F READ 6 08 READ 10 28 READ BUFFER 3C READ CAPACITY 25 READ DEFECT DATA 10 37 READ DEFECT DATA 12 B7 READ LONG 3E READ SKIP MASK E8 REASSIGN BLOCKS 07 REBUILD 81 RECEIVE DIAGNOSTIC RESULTS 1C REGENERATE 82 RELEASE 6 17 RELEASE 10 57 REPORT DEVICE IDENTIFIER A3 REPORT LUNS A0 REQUEST SENSE 03 RESERVE 6 16 RESERVE 10 56 REZERO UNIT 01 SEEK 6 0B SEEK 10 2B SEND DIAGNOSTIC 1D SET ...

Страница 235: ...ETECTED ERROR 05 LINKED COMMAND COMPLETE 0A LINKED COMMAND COMPLETE w FLAG 0B MESSAGE PARITY ERROR 09 MESSAGE REJECT 07 NO OPERATION 08 ORDERED QUEUE TAG 22 PARALLEL PROTOCOL REQUEST 04 QUICK ARBITRATION AND SELECTION 55 RELEASE RECOVERY 10 SAVE DATA POINTER 02 SIMPLE QUEUE TAG 20 SYNCHRONOUS DATA TRANSFER REQUEST 01 TARGET TRANSFER DISABLE 13 WIDE DATA TRANSFER REQ 03 Pages Page Code Cmd ASCII Im...

Страница 236: ...ing Number C1 12 Port Control Page 19 15 55 Margin Control Subpage 19 Subpage 1 Saved Training Configuration Values Subpage 19 Subpage 2 Negotiated Setting Subpage 19 Subpage 3 Report Transfer Capabilities Subpage 19 Subpage 4 Read Error Counter 03 4D Read Write Error Recovery 01 15 Rigid Disk Geometry 04 15 55 SCSI Bus Events 3E 4D Seek Performance Summary 37 4D Servo Events Counter 38 4D Standar...

Страница 237: ...status codes Table A 6 SCSI 3 Quick Reference Status Codes Sense Keys Sense Code Hex NO SENSE 0 RECOVERED ERROR 1 NOT READY 2 MEDIUM ERROR 3 HARDWARE ERROR 4 ILLEGAL REQUEST 5 UNIT ATTENTION 6 DATA PROTECT 7 VENDOR SPECIFIC 9 ABORTED COMMAND B MISCOMPARE E Status Codes Status Code Hex GOOD 00 CHECK CONDITION 02 BUSY 08 RESERVATION CONFLICT 18 TASK SET FULL 28 ...

Страница 238: ...Appendix A A 6 Maxtor Atlas 15K ...

Страница 239: ...on 00h 08h Reserved 09h Transfer period 12 5 ns Fast 80 is latched every 12 5 ns This code is valid only if the protocol options bits QAS DT and IU of the page have values selected that support double transition DT data transfers 0Ah Transfer period 25 ns Fast 40 data is latched every 25 ns 0Bh Transfer period 30 ns Fast 40 data is latched every 30 ns OCh Transfer period 50 ns Fast 20 data is latc...

Страница 240: ... of less than or equal to 96 ns and greater than or equal to 50 ns 0Dh 18h Transfer period the period factor x 4 Fast 20 data is latched using a transfer period of less than or equal to 96 ns and greater than or equal to 50 ns 19h 31h Transfer period the period factor x 4 Fast 10 data is latched using a transfer period of less than or equal to 196 ns and greater than or equal to 100 ns 32h FFh Tra...

Страница 241: ...e heads on drives equipped with Airlock all Maxtor drives ALLOCATION The process of assigning particular areas of the disk to specific data or instructions An allocation unit is a group of sectors on the disk reserved for specified information On hard disks for small computer systems the allocation unit is usually in the form of a sector block or cluster See also allocation unit ALLOCATION UNIT An...

Страница 242: ...h to hold one character of alphanumeric data Comprised of eight bits See also bit C CACHE Specialized High speed RAM used to optimize data transfers between system elements with different performance characteristics e g disk to main memory or main memory to CPU CAPACITY The amount of information that can be stored on a hard drive Also known as storage capacity See also formatted capacity CLEAN ROO...

Страница 243: ...tic patterns in a metal or metal oxide coating Magnetic disks come in two forms floppy and hard Optical recording is a newer disk technology that gives higher capacity storage but at slower access times DISK CONTROLLER A plug in board or embedded circuitry on the drive that passes information to and from the disk The Maxtor hard disk drives all have controllers embedded on the drive printed circui...

Страница 244: ... simultaneously as a file server and a workstation FIRMWARE Permanent instructions and data programmed directly into the circuitry of read only memory for controlling the operation of the computer Distinct from software which can be altered by programmers FLUX DENSITY The number of magnetic field patterns that can be stored in a given length of disk surface The number is usually stated as flux cha...

Страница 245: ...ive element used to write and read back the magnetic patterns of data on the recording media See also Diamond Head HEAD DISK ASSEMBLY HDA The assembly made up of the spindle motor spindle head positioner actuator head preamp electronics and magnetic disk assembly HIGH CAPACITY DRIVE By industry conventions typically a drive of 100 megabytes or more HIGH LEVEL FORMATTING Formatting performed by the...

Страница 246: ... 3 600 rpm the maximum latency time is 16 4 milliseconds and the average latency time is 8 2 milliseconds LBA Abbreviation for Logical Block Address A sequentially numbered identity of a multi byte block of user data It does not refer directly to the physical location of the data in a disk drive LOGICAL FORMAT The logical drive geometry that appears to the computer system BIOS as defined by the dr...

Страница 247: ...ailed for some reason This only takes into consideration the changing of the major sub assemblies such as circuit board or sealed housing Component level repair is not included in this number as this type of repair is not performed in the field N NANOSECOND ns One billionth of a second 0 000 000 001 second or 10 9 second NEXUS A relationship between two devices that begins with the establishment o...

Страница 248: ...ocks of data PRML Partial Response Maximum Likelihood A sophisticated data detection method that improves data throughput and increases areal density PRML read channels are used in place of peak detection read channels Q QUEUE A prioritized list or set of processes A queue may be a FIFO first in first out LIFO last in first out or a random access entity QUEUE TAG The value associated with an I O p...

Страница 249: ...ograms that can be accessed and read but can not be modified ROTARY ACTUATOR The rotary actuator replaces the stepper motor used in the past by many hard disk manufacturers The rotary actuator is perfectly balanced and rotates around a single pivot point It allows closed loop feedback positioning of the heads which is more accurate than stepper motors ROTATIONAL LATENCY The delay between when the ...

Страница 250: ...e cache enables command reordering on a more efficient track basis rather than on a command basis SENSE DATA Information returned to an initiator regarding error conditions in the drive SERVO SECTOR TIME The time in µsec between reading one servo header or spoke and reading the next header SERVO SPOKE DATA In embedded servo technology digital and quadrature analog servo data is written embedded in...

Страница 251: ... electrical pulse Stepper were originally the most common type of actuator engine since they can be geared to advance a read write head one track per step However they are not as fast reliable or durable as the voice coil actuators found in Maxtor disk drives See also voice coil SUBSTRATE The material underneath the magnetic coating of a disk Common substrates include aluminum or magnesium alloys ...

Страница 252: ...r cables may be required Also known as Fast 20 UNFORMATTED CAPACITY The total number of usable bytes on a disk including the space that will be required to later to record location boundary definitions and timing information See formatted capacity for comparison V VOICE COIL A fast and reliable actuator motor that works like a loud speaker with the force of a magnetic coil causing a proportionate ...

Страница 253: ...Glossary G 13 Maxtor Atlas 15K ...

Страница 254: ...Glossary G 14 Maxtor Atlas 15K ...

Страница 255: ...9 buffer size 4 2 Bus Inactivity Limit 5 46 bus interface connector 3 15 3 16 Byte Transfer Length 5 11 5 103 5 150 bytes per sector 4 1 C Caching 5 49 5 146 Caching Page 5 49 5 146 CHANGE DEFINITION Command 5 14 Changeable Pages 5 42 clearance 3 23 Clearing Sense Data 5 113 Command Queuing 5 23 component life 4 10 Connect Time Limit 5 46 connector 3 14 3 15 3 16 contact start stop cycles 4 2 Cont...

Страница 256: ...5 100 5 101 5 102 5 104 H hard reset time 4 4 HARDWARE ERROR 5 118 hardware options 3 6 hardware requirements 2 4 Head Offset Count 5 45 host system 3 7 hot plugging 6 11 humidity 4 8 I idle 4 6 Immed 5 15 5 18 5 141 5 142 Implemented Operating Definition 5 25 5 26 Implemented Operating Definition Page 5 25 5 26 Initialization Pattern Descriptor 5 19 input power connections 3 20 inside zone 4 1 in...

Страница 257: ... Notch and Partition Page 5 53 Number of Blocks 5 41 5 142 Number of Cylinders 5 71 Number of Heads 5 71 O orientation 3 22 outside zone 4 1 P packing assembly 3 5 packing materials 3 4 Page Length 5 35 Pages Notched 5 54 Parameter Code Reset 5 32 Parameter List 5 11 5 12 5 17 5 18 5 37 5 40 5 136 5 149 Parameter List Length 5 37 5 136 5 149 Parameter Pointer 5 34 Parameter Pointer Control 5 34 PC...

Страница 258: ... Rotational Offset 5 72 rotational speed 4 1 RPL Status Change 5 116 S SCSI configurations 2 1 SCSI ID bits 3 8 SCSI interface configurations 3 3 SCSI 2 specification 1 3 SEEK 10 Command 5 135 SEEK 6 Command 5 134 Segment Number 5 116 SEND DIAGNOSTIC Command 5 136 Sense Data Availability 5 113 Sense Key 5 20 5 116 5 117 5 118 5 127 5 128 Sense Key Information Field Contents 5 118 Sense Keys 5 117 ...

Страница 259: ...ge 5 62 Unit Serial Number 5 24 Unit Serial Number Page 5 24 UNIX 4 3 unrecoverable error rate 4 2 V ventilation 3 22 3 24 ventilation requirements 3 22 Verification Length 5 144 VERIFY Command 5 144 5 147 Verify Correction Span 5 48 Verify Error Recovery 5 48 Verify Error Recovery Page 5 48 Verify Recovery Time Limit 5 48 Verify Retry Count 5 48 versatility 2 3 vibration 4 9 Vital Product Data 5 ...

Страница 260: ...Index I 6 Maxtor Atlas 15K ...

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