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Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives

5–1

Chapter 5

SCSI DESCRIPTION

This chapter contains an overview of SCSI command and status processing and a
detailed description of the commands supported by the disk drives. The SCSI
command system enables the initiator to instruct the drive to perform specific
functions.

NOTE

In this manual, unless otherwise stated,

numerical values are given

in decimal.

Hexadecimal numbers,

such as opcodes, are always given with an “h” following,

as in 5Ah except when entire data tables are in hexadecimal.

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Содержание Quantum Atlas 10K II 9.2/18.4/36.7/73.4 GB

Страница 1: ...Quantum AtlasTM 10K II 9 2 18 4 36 7 73 4 GB Ultra 160 m S Product Manual June 8 2000 81 122517 04...

Страница 2: ...9 701 4 538 193 4 625 109 4 639 798 4 647 769 4 647 997 4 661 696 4 669 004 4 675 652 4 703 176 4 730 321 4 772 974 4 783 705 4 819 153 4 882 671 4 920 442 4 920 434 4 982 296 5 005 089 5 027 241 5 03...

Страница 3: ...nector 3 8 3 4 1 3 Write Protection Disk Drives with 68 Pin SCSI Connector 3 10 3 4 1 4 Spin Up Disk Drives with 68 Pin SCSI Connector 3 10 3 4 1 5 Enable Narrow Mode Force 8 Disk Drives with 68 Pin S...

Страница 4: ...CS 4 10 4 7 MECHANICAL 4 10 4 8 ENVIRONMENTAL CONDITIONS 4 11 4 9 SHOCK AND VIBRATION 4 11 4 10 RELIABILITY 4 12 Chapter 5 SCSI DESCRIPTION 5 1 Overview of the SCSI Command Descriptions 5 3 5 2 Comman...

Страница 5: ...64 5 14 3 3 Read Write Error Recovery Page 01h 5 65 5 14 3 4 Disconnect Reconnect Page 02h 5 68 5 14 3 5 Verify Error Recovery Page 07h 5 71 5 14 3 6 Caching Page 08h 5 73 5 14 3 7 Control Mode Page 0...

Страница 6: ...1 Supported Diagnostic Page List 5 204 5 40 2 Translate Address Page 5 204 5 41 SET DEVICE IDENTIFIER Command 5 205 5 42 START STOP UNIT Command 1Bh 5 207 5 43 SYNCHRONIZE CACHE Command 35h 5 209 5 44...

Страница 7: ...0 6 17 2 Diffsens Switching 6 11 6 17 3 DT and ST Clocking 6 11 6 17 4 Cyclic Redundancy Checking 6 12 6 17 5 Domain Validation 6 12 6 18 Hot Plugging Removal Insertion of SCSI Devices 6 12 Appendix A...

Страница 8: ...Contents viii Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives B 7 SCSI Message Format B 26...

Страница 9: ...SAGE PARITY ERROR Message 09h B 33 B 8 14 MESSAGE REJECT Message 07h B 33 B 8 15 NO OPERATION Message 08h B 34 B 8 16 Queue Tag Messages 20h 21h or 22h B 34 B 8 16 1 HEAD OF QUEUE TAG Message 21h B 35...

Страница 10: ...t Data Format 5 27 5 6 FORMAT UNIT Defect List Header Data Format 5 28 5 7 FORMAT UNIT Defect Descriptor Block Format 5 29 5 8 FORMAT UNIT Defect Descriptor Physical Sector and Bytes From Index Format...

Страница 11: ...Contents Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives xi 5 35 XOR Control Mode Page Data Format 5 82...

Страница 12: ...and Data Format 5 143 5 62 Defect Descriptor Block Format 5 144 5 63 Defect Descriptor Bytes From Index Format or Physical Sector Format 5 144 5 64 Defect List Header Data Format 5 145 5 65 READ DEFEC...

Страница 13: ...103 SYNCHRONIZE CACHE Command Descriptor Block Data Format 5 209 5 104 TEST UNIT READY Command Descriptor Block Data Format 5 211 5 105 VERIFY Command Descriptor Block Data Format 5 213 5 106 WRITE 6...

Страница 14: ...MAT UNIT Initialization Pattern Type 5 31 5 12 INQUIRY Command Descriptor Block Field Descriptions 5 33 5 13 Standard Inquiry Data Page Field Descriptions 5 36 5 14 Vital Product Data Page Codes 5 37...

Страница 15: ...Contents Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives xv...

Страница 16: ...116 5 55 PERSISTENT RESERVATION IN Read Reservations Descriptor Field Descriptions 5 117 5 56 Persistent Reservation Type Codes and Their Meanings 5 119 5 57 When Do Conflicts Between Existing Reserv...

Страница 17: ...R OR RECOVERED ERROR Sense Key Retry Count Field Descriptions 5 190 5 91 RESERVE 6 Command Field Descriptions 5 191 5 92 RESERVE 10 Command Field Descriptions 5 194 5 93 Reservation Types 5 195 5 94 S...

Страница 18: ...e Response B 23 B 10 SCSI Message Format B 26 B 11 Supported SCSI Messages B 27 B 12 Extended Message Field Descriptions B 28 B 13 Drive s Response to DISCONNECT Message B 30 B 14 IDENTIFY Message Fie...

Страница 19: ...Contents Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives xix...

Страница 20: ...ER and SET DEVICE IDENTIFIER commands Changes to specifications and SCSI chapter Added Index 81 122517 01 April 19 2000 1st release of final version of manual Changes to specifications chapter SCSI Ch...

Страница 21: ...Chapter 4 Changes to specs for formatted capacities Section 4 2 data transfer rates Section 4 3 timing specifications Section 4 4 power consumption Section 4 5 3 1 current requirements Section 4 5 3 3...

Страница 22: ...or the SCSI interface This manual is not intended for end users and is not a users manual or an installation guide 1 2 DOCUMENT ORGANIZATION This product manual is organized into the following chapter...

Страница 23: ...An example is the Host Software Reset Bit Commands Firmware commands are listed as all capitals An example is MODE SELECT Parameters Parameters are given as initial capitals when spelled out and are...

Страница 24: ...REFERENCES For additional information about the SCSI Interface refer to ANSI Small Computer System Interface 2 SCSI 2 Specification ANSI X3T9 2 86 109 Revision 10K II ANSI Small Computer System Interf...

Страница 25: ...About This Manual 1 4 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...

Страница 26: ...ra2 Ultra SCSI 68 pin Wide 16 bit Ultra 160 m Ultra2 Ultra SCSI 80 pin SCA 2 16 bit There are currently four models in the Atlas 10K II series with capacities of 9 2 18 4 36 7 and 73 4 gigabytes GB 2...

Страница 27: ...satisfy the following standards and regulations Underwriters Laboratory U L Standard 1950 Information technology equipment including business equipment Canadian Standards Assocation CSA Standard C 22...

Страница 28: ...ostatic discharge ESD Always handle the drive with care to avoid damage to the precision internal components CAUTION A 1 4 inch drop onto a hard surface can damage the drive Follow these guidelines to...

Страница 29: ...e 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 your work surface Always use...

Страница 30: ...or bezel and comes in the following SCSI interface configurations 68 pin Wide SCSI 80 pin SCA 2 SCSI Figures 3 1 and 3 2 show the mechanical dimensions of disk drives of these two interface types Fig...

Страница 31: ...next to the screws black The shock feet give an additional level of isolation to prevent the head and disk damage that occasionally may occur during unpacking staging and installation The shock feet a...

Страница 32: ...assembly CAUTION During shipment and handling the antistatic electrostatic discharge ESD bag prevents damage to electronic components due to electrostatic discharge To avoid accidental damage to the...

Страница 33: ...ecautions described at the beginning of this manual to avoid personal injury or damage to equipment 3 4 1 Jumper Configurations and Connections Disk Drives with 68 Pin SCSI Connector This section desc...

Страница 34: ...ey Fault LED 8 7 SCSI ID bit 0 GND 6 5 SCSI ID bit 1 GND 4 3 SCSI ID bit 2 GND DRIVES WITH 68 PIN SCSI CONNECTOR 12 11 No Connect 5V 10 9 GND Reserved 8 7 Busy LED SCSI ID bit 3 6 5 GND SCSI ID bit 2...

Страница 35: ...ling a jumper across pin pair 27 28 Figure 3 4 on the Secondary Option Connector located on the front of the drive 3 4 1 2 SCSI ID Disk Drives with 68 Pin SCSI Connector Each SCSI device on the bus mu...

Страница 36: ...SCSI ID bits 0 1 2 and 3 pins 1 3 5 and 7 respectively are active LOW signals That is the bit is a 1 if the corresponding remote switch is closed to ground Use pins 2 4 6 and 8 as the associated groun...

Страница 37: ...th 68 Pin SCSI Connector Atlas 10K II Ultra 160 m SCSI drives have three Spin Up modes Option 1 Spin up immediately when power is applied Verify that no jumper is installed across pin pair 11 12 GND S...

Страница 38: ...Busy and or remote Fault display LEDs to the appropriate pins on the 12 pin Option Connector or the 28 pin Secondary Option Connector Remote Busy LED On the Option Connector connect the cathode side o...

Страница 39: ...ions These versions of Atlas 10K II Ultra 160 m SCSI disk drives cannot be configured to provide bus termination Therefore be sure to properly terminate the SCSI bus on which this drive is installed N...

Страница 40: ...ical 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 Ta...

Страница 41: ...RT Command Open Ground Reserved Ground Ground 3 4 2 4 Activity LED for SCA 2 Connector Versions The drive provides the output BUSY_OUT signal to power a user supplied activity LED The output indicates...

Страница 42: ...e ended device install the low profile jumper across pin pair 1 3 Figure 3 6 For LVD operation and monitoring of DIFFSENS signal place the jumper across pin pair 2 4 Figure 3 6 Force Single Ended Oper...

Страница 43: ...Connectors on the drive Table 3 5 provides signal names pin locations for the 68 pin wide SCSI connector Figure 3 7 Connectors on 68 Pin SCSI Connector Versions of Atlas 10K II Ultra 160 m Hard Disk D...

Страница 44: ...DB 3 9 43 DB 3 DB 4 10 44 DB 4 DB 5 11 45 DB 5 DB 6 12 46 DB 6 DB 7 13 47 DB 7 DB P 14 48 DB P GROUND 15 49 GROUND DIFFSENS 16 50 GROUND TERMPWR 17 51 TERMPWR TERMPWR 18 52 TERMPWR RESERVED 19 53 RESE...

Страница 45: ...CSI Connector Figure 3 8 shows the location of the SCSI Connector on this version of the drive Table 3 6 provides signal names pin locations for the 80 pin SCA 2 SCSI connector Figure 3 8 SCA 2 Connec...

Страница 46: ...SCSI_MSG_P SCSI_RST 16 56 SCSI_RST_P SCSI_ACK 17 57 SCSI_ACK_P SCSI_BSY 18 58 SCSI_BSY_P SCSI_ATN 19 59 SCSI_ATN_P SCSI_PARITY_M 0 20 60 SCSI_PARITY_P 0 DATA_M 7 21 61 DATA_P 7 DATA_M 6 22 62 DATA_P 6...

Страница 47: ...cable WARNING Before you begin review the Safety ESD and Handling precautions described in the beginning of this manual to avoid personal injury or damage to the drive 3 6 1 Orientation The drive can...

Страница 48: ...e specified length for the mounting screws The specified screw length allows full use of the mounting hole threads while avoiding damaging or placing unwanted stress on the PCBA Figure 3 11 specifies...

Страница 49: ...ngths specified in Figure 3 11 The specified screw length allows full use of the mounting hold threads while avoiding damage or stress on the PCBA Clearance from the disk drive to any other surface ex...

Страница 50: ...performance benchmark testing it is recommended that the disk drive be mounted firmly within a system or a fixture rather than sitting unconstrained on a tabletop or work surface If it is necessary to...

Страница 51: ...igure 3 10 The holes accept 6 32 screws NOTE Mounting brackets may used when installing the drive in a 5 25 inch form factor bay Brackets supplied by Quantum Corporation to mount the drive are recomme...

Страница 52: ...ackets to the drive using four 6 32 screws see Figure 3 11 Mount the drive in the bay by performing the following steps 1 Position the completed unit drive and brackets in the bay 2 Secure the unit wi...

Страница 53: ...e Connect the cable to J1 carefully to avoid bending or damaging the connector pins Drives with SCA connector may plug directly into a backplane connector The connectors used on the drive vary with th...

Страница 54: ...or Quantum 23 409326 01 includes a 68 pin SCSI connector Molex 87360 0009 a 4 pin power connector and a 2 mm pitch 12 pin 2x6 option connector 23 pin secondary option connector Quantum TBD 2 mm pitch...

Страница 55: ...Installation 3 28 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...

Страница 56: ...Gb square inch 7 7 7 7 7 7 7 7 Data Organization User Data Tracks per Surface 17337 17337 17337 17337 Data Bands per Surface 24 24 24 24 User Data Track Pitch at 14 200 tpi 22500 22500 22500 22500 Dat...

Страница 57: ...oretical AFR for the Atlas 10K IIfamily of products that is based on design i e Bellcore and historical data and does not include process variance returns with no trouble found or handling and excessi...

Страница 58: ...rage capacities of the three different disk drives that result from this process Formatting done at the user level for operation with DOS UNIX or other operating systems will result in less capacity t...

Страница 59: ...ESCRIPTION QUANTUM ATLAS 10K II 9 1 GB QUANTUM ATLAS 10K II 18 2 GB QUANTUM ATLAS 10K II 36 7 GB QUANTUM ATLAS 10K II 73 4 GB Interface Transfer Rate MB second 160 160 160 160 Media Transfer Rate Chan...

Страница 60: ...9 ms 0 6 ms 12 ms 3 ms 200 us 6 ms 5 2 ms 5 2 ms 8 4 ms 0 6 ms 13 ms 3 ms 200 us Start Stop Times Time to Data Available1 from SCSI START command Time to Data Available2 from power up Nominal 15 secon...

Страница 61: ...e disk drive However data may be lost in the sector being written at the time of a power loss The disk drive can withstand transient voltages of 10 to 100 from nominal while powering up or down 4 5 2...

Страница 62: ...measurements are based on a 2 5 ms sampling rate The industry typical sampling rate is 20ms and therefore the Quantum stated startup peak power data appear to be higher than the industry typical numb...

Страница 63: ...5 2850 mA peak 2475 1 2860 mA peak 2507 4 2860 mA peak 3221 5 3740 mA peak This value achieved during calibration Idle Mode Maximum 9 2 GB 18 4 GB 36 7 GB 73 4 GB 5 Vdc Supply Avg 570 mA 580 mA 580 mA...

Страница 64: ...5 NOTE ECMA Seek Rate is defined in ECMA standard 74 It corresponds to 52 random seeks per second NOTE Instantaneous Peak Current transients of 3A for 50 s may occur during spin up 4 5 3 5 Supply Rip...

Страница 65: ...2 dB 4 4 4 7 dB 3 9 4 2 dB 4 9 5 2 dB 4 3 4 6 dB NOTE ECMA Seek Rate is defined in ECMA standard 74 It corresponds to 52 random seeks per second 4 7 MECHANICAL Dimensions 9 1 GB 18 4 GB 36 7 GB 73 4...

Страница 66: ...S 1 No condensation 2 Altitude is relative to sea level 4 9 SHOCK AND VIBRATION The Quantum Atlas 10K II Ultra 160 m SCSI hard disk drive can withstand levels of shock and vibration applied to any of...

Страница 67: ...from 91 4 cm 36 0 inches for packages up to 20 lbs 76 2 cm 30 0 inches for packages between 21 and 40 lbs Drop on 6 faces 3 edges 1 corner Vibration Sine Swept G Peak to Peak Frequency Hz 1 0 1 6 5 30...

Страница 68: ...description of the commands supported by the disk drives The SCSI command system enables the initiator to instruct the drive to perform specific functions NOTE In this manual unless otherwise stated...

Страница 69: ...SCSI Description 5 2 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 70: ...owed to execute concurrently with the restriction that the drive executes overlapping writes in the order received Normal commands are usually I O commands Table 5 1 Supported SCSI Commands Command Op...

Страница 71: ...T READY 00h Immediate VERIFY 2Fh Normal WRITE 6 0Ah Normal WRITE 10 2Ah Normal WRITE AND VERIFY 2Eh Normal WRITE BUFFER 3Bh Sequential WRITE LONG 3Fh Sequential WRITE SAME 41h Sequential WRITE SKIP MA...

Страница 72: ...riptor Block CDB that contains the parameters for the specific command The SCSI command s operation code is always the first byte in the CDB and a control field is the last byte For some commands the...

Страница 73: ...ns 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 field provides for eight groups of command codes The 5 bit Com...

Страница 74: ...256 sectors of data to be transferred by one command A transfer length value of 0 indicates that 256 sectors are to be sent Transfer length values of 1 through 255 indicate the number of sectors to b...

Страница 75: ...a task I O Process across two or more SCSI commands If the Link bit is one and the flag bit is zero and the command completes successfully the drive will continue the task and return a status of INTER...

Страница 76: ...cated by a status that is returned by the drive during the STATUS phase This phase occurs at the end of each command unless the command is terminated by one of the following events ABORT TASK SET mess...

Страница 77: ...ommand from another initiator is currently active Parallel SCSI A command is received while aan auto contingent allegiance condition exists for another initiator 10h INTERMEDIATE This status is return...

Страница 78: ...er receipt of an ABORT 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 it...

Страница 79: ...SCSI Description 5 12 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 80: ...ingent Allegiance 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 CO...

Страница 81: ...SCSI Description 5 14 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 82: ...ve sends an INTERMEDIATE 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 COMMAN...

Страница 83: ...SCSI Description 5 16 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 84: ...on Length Bytes of data the drive is allowed to send to the initiator Parameter List Length Bytes of data the initiator has available for the drive Transfer Length Logical data sectors the initiator w...

Страница 85: ...8 Page s MODE SENSE Allocation Block Descriptor 8 PERSIST RES IN PERSIST RES OUT READ 6 10 Transfer Data READ BUFFER Allocation READ BUFFER Header 4 Mode zero Buffer 512 or Section of Drive s DRAM or...

Страница 86: ...DEVICE IDENTIFIER START STOP UNIT 0 SYNCHRONIZE 0 CACHE TEST UNIT READY 0 VERIFY Transfer Data WRITE 6 10 Transfer Data WRITE AND VERIFY Transfer Data WRITE BUFFER Parameter List Zeros 4 Mode zero bu...

Страница 87: ...SCSI Description 5 20 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 88: ...red page Common Fields 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 byte...

Страница 89: ...SCSI Description 5 22 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 90: ...es with parallel SCSI interfaces to one of four different levels SCSI 1 SCSI 1 CCS SCSI 2 or SCSI 3 Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 40h 1 Reserved 2 Reserved Save 3 Rsv d New Operating Defin...

Страница 91: ...Parameters When this field is set to 1 the new operating definition is saved in the drive s non volatile memory New Operating Definition The values that can be supplied in the field are listed below...

Страница 92: ...and 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 com...

Страница 93: ...value 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 Logic...

Страница 94: ...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 containing all sectors found to be b...

Страница 95: ...the drive should replace sectors found in the Primary Defect List during the format DCRT The Disable Certification bit specifies whether the drive should certify the media during the format The drive...

Страница 96: ...e Command Descriptor Block and FORMAT UNIT Parameter List have been fetched and validated In this case the drive ignores the IDENTIFY message s disconnect privilege bit and remains connected to the bu...

Страница 97: ...east significant part of the address A value of FFFFFFFFh in bytes 4 to 7 is ignored Bit Byte 7 6 5 4 3 2 1 0 0 2 Cylinder Number of Defect 3 Head Number of Defect 4 7 Defective Sector Number or Defec...

Страница 98: ...Initialization Pattern Table 5 11 FORMAT UNIT Initialization Pattern Type Initialization Pattern Type Description 00h Use default pattern 1 01h Repeat the initialization pattern as required to fill th...

Страница 99: ...SCSI Description 5 32 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 100: ...es several pages of additional data Each Vital Product Data page requires a separate INQUIRY command from the initiator An INQUIRY command is not affected by nor does it clear a Unit Attention conditi...

Страница 101: ...be returned by the drive when CmdDt is set A CHECK CONDITION status is returned if this field specifies an unsupported Page or Operation Code or if both EVPD and CmdDt are set Table 5 14 lists the Pa...

Страница 102: ...ion 0 ANSI Version 3 SCSI 3 3 AERC 0 TrmTsk 0 Norm ACA 0 Rsv d Response Data Format 2 4 Additional Length 5Bh 5 Reserved 6 Rsv d Rsv d Port 0 MultiP 0 Mchngr 0 ACKQ REQQ 0 Addr32 Addr16 7 RelAdr 0 Wbu...

Страница 103: ...he International Standard RelAdr 0 Relative Addressing is not supported WBus 32 0 32 bit wide bus is not supported WBus 16 0 or 1 The WBus bit is 1 if the drive supports 16 bit data transfer The bit i...

Страница 104: ...rver supports information units A value of 0 indicates that the device server does not support information units Default is 0 5 11 2 Vital Product Data Pages The Vital Product Data pages that can be r...

Страница 105: ...ber and the HDA Serial Number Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier 000b Peripheral Device Type 000h Direct Access Device 1 Page Code 80h 2 Reserved 3 Page Length 0Ch 4 15 HDA Serial Number...

Страница 106: ...Reserved 3 Page Length 05h 4 Rsv d Current Definition 5 SavImp 1 Default Definition is SCSI 3 04h 6 SavImp 1 Default Definition is SCSI 3 04h 7 SavImp 1 Default Definition is SCSI 2 03h 8 SavImp 1 Def...

Страница 107: ...haracter string s length 1Bh in byte 4 followed by the appropriate character string SCSI 3 SCSI 2 SCSI 1 CCS in bytes 5 through 31 for Parallel SCSI Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier 0 P...

Страница 108: ...6 5 4 3 2 1 0 0 Peripheral Qualifier 0 Peripheral Device Type 0 Direct Access Device 1 Page Code 83h 2 Reserved 3 Page Length 24h for SCSI 4 Reserved Code Set 1 5 Reserved Association 0 Identifier Typ...

Страница 109: ...with the addressed physical or logical device 1h The identifier field is associated with the port that received the request 2h 3h Reserved Identifier Type This field specifies the format and assignmen...

Страница 110: ...eflects the current firmware revision and date and time when it was built Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier 0 Peripheral Device Type 0 Direct Access Device 1 Page Code C0h 2 Reserved 3 P...

Страница 111: ...Information Page reflects the part number assigned by Quantum s manufacturing group in accordance with vendor requirements Bit Byte 7 6 5 4 3 2 1 0 0 Reserved 1 Page Code C1h 2 Reserved 3 Page Length...

Страница 112: ...ate Information Page C4h Bit Byte 7 6 5 4 3 2 1 0 0 Peripheral Qualifier 0 Peripheral Device Type 0 Direct Access Device 1 Page Code C4h 2 Reserved 3 Page Length 4h 4 Transfer Period Factor 5 REQ ACK...

Страница 113: ...ormat When 0 this field indicates the negotiation occurred with a Synchronous Data Request message format FAIR Fairness When set 1 the Fairness algorithm is enabled When set 0 the algorithm is disable...

Страница 114: ...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 Bit Byte 7 6 5 4 3 2...

Страница 115: ...erating definition for supported command Version CDB Size This field contains the number of bytes in the CDB for the Operation Code being requested and the size of the CDB Usage Data in the data that...

Страница 116: ...F0003 12h INQUIRY 03 01 06 12E3FF00FF03 15h MODE SELECT 6 03 01 06 15F10000FF03 16h RESERVE 6 03 01 06 16FEFFFFFF03 17h RELEASE 6 03 01 06 17FEFF000003 1Ah MODE SENSE 6 03 01 06 1AE8FF00FF03 1Bh START...

Страница 117: ...FFFF00FFFF03 4Ch LOG SELECT 03 01 0A 4CE3C000000000FFFF03 4Dh LOG SENSE 03 01 0A 4DE1FF00000000FFFF03 50h XDWRITE 10 03 03 0A 501CFFFFFFFF00FFFF03 51h XPWRITE 10 03 03 0A 5118FFFFFFFF00FFFF03 52h XDRE...

Страница 118: ...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 Figure 5 20 LOG SELECT Command Descriptor Block Data Format Table 5 20 LOG SELECT...

Страница 119: ...SCSI Description 5 52 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 120: ...stored log data The LOG SENSE command is a complementary command to the LOG SELECT command Each log page contains one or more pieces of information Each piece of information is referred to as a parame...

Страница 121: ...age 0Fh Application Client Page 10h Self Test Results Page 2Fh1 SMART Page 31h Last 500 Errors 36h1 Early Warning System EWS Page 37h1 Seek Performance Summary 38h1 Servo Events Counter 39h1 Bad Block...

Страница 122: ...t to the allocation length specified 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 sav...

Страница 123: ...1 NOTE 1 Length x or y is the sum of parameter header and parameter data value bytes Figure 5 22 LOG SENSE Log Page Format Data Format Table 5 23 LOG SENSE Log Page Format Field Descriptions Field De...

Страница 124: ...Save Disable This parameter is 0 indicating that the drive provides a target specific way of saving parameters ETC Enable Threshold Comparison This parameter is always 0 The drive does not use thresho...

Страница 125: ...SCSI Description 5 58 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 126: ...ol Figure 5 24 MODE SELECT 6 Command Descriptor Block Data Format Table 5 25 MODE SELECT 6 Command Field Descriptions Data Field Description PF Page Format The drive ignores the content of this field...

Страница 127: ...ttention Control Page Unit Attention reporting 4 enables or disables 01h Read Write Error Recovery Medium Access Error recovery 12 Page and reporting procedures for READ and WRITE commands 02h Disconn...

Страница 128: ...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 parameter...

Страница 129: ...page code s of the pages that are a part of this command Bit Byte 7 6 5 4 3 2 1 0 0 Mode Data Length 1 Medium Type 2 Device Specific Parameter 3 Block Descriptor Length Figure 5 26 Mode Parameter Head...

Страница 130: ...ries described in Table 5 31 Table 5 31 Categories of Changeable Pages Category Description Fully Supported A field in this category can be modified by the MODE SELECT command can be saved and can aff...

Страница 131: ...Condition Page Data Format Table 5 32 Unit Attention Condition Page Data Format Default Field Value Description PS 1 Parameters Savable This bit is only used with the MODE SENSE command A returned val...

Страница 132: ...portion of WRITE AND VERIFY command processing Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code 01h 1 Page Length 0Ah 2 AWRE ARRE TB RC EER PER DTE DCR 3 Read Retry Count 4 Correction Span 5 Head Offset C...

Страница 133: ...t Reallocation is done only when the drive is able to recover the sector s data unless the HrdBBR bit of the Quantum Vendor Special Function Control Page is set When ARRE is 0 the drive does not autom...

Страница 134: ...cally rounds down the number to the default value A value of 0 causes the drive to use the default value The drive ignores any value placed in this field Head Offset Count 0 Not supported by the drive...

Страница 135: ...3 2 1 0 0 PS Rsvd Page Code 02h 1 Page Length 0Eh 2 Buffer Full Ratio 3 Buffer Empty Ratio 4 5 Bus Inactivity Limit 6 7 Disconnect Time Limit 8 9 Connect Time Limit 10 11 Maximum Burst Size 12 EMDP Fa...

Страница 136: ...than 0xFF are treated as 0xFF The default value of 0 indicates that the drive can reslect immediately after releasing the bus Connect Time Limit 0 The Connect Time Limit indicates the maximum duratio...

Страница 137: ...f a command has started until all data of the command has been transferred The connect time limit and bus inactivity limit are ignored during the transfer 010b Reserved 011b A target shall not attempt...

Страница 138: ...FY command The Verify Error Recovery Page is not supported in the SCSI 1 CCS Operating Mode Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code 07h 1 Page Length 0Ah 2 Reserved EER PER DTE DCR 3 Verify Retry...

Страница 139: ...t disables ECC correction but not retries on the READ portion of a VERIFY operation When set to the default value of 0 the ECC correction is always applied as a means of recovering erred data Verify R...

Страница 140: ...4 5 Disable Pre Fetch Transfer Length 6 7 Minimum Pre Fetch 8 9 Maximum Pre Fetch 10 11 Maximum Pre Fetch Ceiling 12 FSW LBCSS DRA VS VS Reserved 13 Number of Cache Segments 14 15 Cache Segment Size 1...

Страница 141: ...ve interprets the minimum and maximum pre fetch fields values in terms of the number of logical blocks for each of the respective types of prefetch RCD 0 Read Cache Disable The default value of 0 enab...

Страница 142: ...ber of sectors is greater than the maximum pre fetch then the number of logical blocks to pre fetch is reduced to the value stored in the maximum pre fetch ceiling field Not supported by the drive FSW...

Страница 143: ...ved GLTSD RLEC 3 Queue Algorithm Modifier Reserved Qerr DQue 4 EECA RAC Reserved RAERP UAAERP EAERP 5 Reserved 6 7 Ready AEN Holdoff Period 8 9 Busy Timeout Period 10 11 Reserved NOTES 1 Fully support...

Страница 144: ...he drive the cumulative values of the Log Counters page will be written to disk A LOG SENSE command will return the cumulative values since the counters were cleared not since the drive was powered on...

Страница 145: ...Report A Check Condition bit Ignored by the drive RAERP 0 Ready AER Permission Not supported by the drive UAAERP 0 Unit Attention AER Permission Not supported by the drive EAERP 0 Error AER Permission...

Страница 146: ...the logical unit with a different number of sectors is referred to as a notch or band Each notch must span a set of consecutive logical blocks in the logical unit the notches must not overlay and no...

Страница 147: ...t significant A value of 1 indicates that the notch boundaries are based on logical blocks of the logical unit MaxNotch 24 This field indicates the maximum number of notches supported by the logical u...

Страница 148: ...ing head number This field 09h is unchangeable When used with the MODE SELECT command this field is ignored 72GB 0043B9h 13h Pages Notched 00000000b This is a 64 bit bit map that indicates which MODE...

Страница 149: ...OR operating parameters of the target Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code 10h 1 Page Length 16h 2 Reserved XOR Dis Rsv d 3 Reserved 4 7 Maximum XOR Write Size 8 11 MSB Reserved LSB 12 15 MSB...

Страница 150: ...An XOR disable bit of 0 enables the XOR functions within a device An XOR bit of 1 disables the XOR functions within a device Maximum XOR Write Size 512 This field specifies the maximum transfer lengt...

Страница 151: ...f lower power consumption for the disk drive A media access command is acted upon after a delay of approximately one second STANDBY This is the state of lowest power consumption for the disk drive A m...

Страница 152: ...60 m SCSI Hard Disk Drives 5 85 MODE SELECT 6 Command 15h continued Bit Byte 7 6 5 4 3 2 1 0 0 PS Page Code 1Ah 1 Page Length 0Ah 2 Reserved 3 Reserved IdlEnb SbyEnb 4 7 Idle Timer 8 11 Standby Timer...

Страница 153: ...transition time delay from the IDLE to the ACTIVE state SbyEnb 0 Enable Standby Timer Any media access command waits for an approximately 10 second transition time delay from the STANDBY to the ACTIV...

Страница 154: ...Rsv d LogErr 3 Reserved MRIE 4 7 MSB Interval Timer LSB 8 11 MSB Report Count LSB Figure 5 37 Information Exceptions Control Page Data Format Table 5 41 Information Exceptions Control Page Field Desc...

Страница 155: ...prediction algorithm and accumulating SMART data Test 0 When this bit 0 the test function is disabled When this bit 1 the disk drive reports false SMART trip reports as prescribed in the MRIE field s...

Страница 156: ...or specific If the disk drive s predictor detects a SMART threshold trip it reports the failure only if it has not reported a failure within the last interval timer period A value of 0 means that ther...

Страница 157: ...R and the additional sense code will indicate the cause of the informational exception condition The command that has the CHECK CONDITION will complete before and informational exception condition is...

Страница 158: ...RITE Disable Auto READ Delay Spin Software Selectable SCSI ID 4 Reselection Retries 5 ERSS Stagger Spin Auto Master Enable Force 8 DFCP PXM ISN IWN 6 7 MSB Stagger Spin Delay LSB 8 ASDP Enable Quiet R...

Страница 159: ...Error Recovery Parameters is set to 1 the disk reallocates a block that has an uncorrectable READ error the next time this block is written the default for ARRE is 1 Enable Fill Data Pattern 1 When t...

Страница 160: ...iplier to determine the length of the delay When only three bits are used disk drives 0 through 7 and drives 8 through 15 have the same corresponding delays since the fourth bit is not used disk drive...

Страница 161: ...y the drive ISN 0 Initiate Synchronous Negotiation When this field is set 1 the disk drive initiates a synchronous transfer negotiation with the initiator This is done on the first selection with ATTE...

Страница 162: ...message Enable Quiet 0 Enable Quiet Seek Mode If set 1 Quiet Seek mode is enabled USCIO 0 Use Same Cylinder Optimization in OPTWORK When set 1 helps multiple sequential streams SAE 0 Show All Errors W...

Страница 163: ...0 QDER 0 Quick Disk Error Recovery When set 0 disk error recovery has no 20msec limit When set 1 disk error recovery time allotted is less than 20msec DFC 0 Disable Format Certification If set 1 form...

Страница 164: ...s than 19h When this bit 1 SDTR transfer period is limited to 19h minimum DEWG 1 Disable ESP WRITE Guess When 1 enables this feature Enable Comm Timeout 0 Enable Command Timeout When 1 enables this fe...

Страница 165: ...ute intervals This drive does not support spindle syncronization Command Timeout Limit 60 The value of this field specifies the timeout limit in 100 millisecond units The default value of 60 specifies...

Страница 166: ...44 for descriptions of the fields See Figure 5 40 for the Mode Parameter Header 10 Byte Data Format and Figure 5 44 for the Mode Parameter Block Descriptor Data Format See Table 5 25 for mode paramet...

Страница 167: ...ata Field Description Number of Blocks The value in this field specifies the number of logical blocks on the disk to which the density code and block length fields apply A value of 0 in this field ind...

Страница 168: ...SCSI Description Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives 5 101 This page intentionally left blank...

Страница 169: ...SCSI Description 5 102 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives This page intentionally left blank...

Страница 170: ...Length 5 Control Figure 5 42 MODE SENSE 6 Command Descriptor Block Data Format Table 5 45 MODE SENSE Command Field Descriptions Data Field Description DBD Disable Block Descriptor When the value is 0...

Страница 171: ...t 7 This bit is set if the drive is write protected Parameter Bit 4 This bit is always set to indicate that the drive supports cache memory Block Descriptor Zero 0 if Block Descriptor DBD in MODE SENS...

Страница 172: ...5 48 Note that the page is savable but no parameters are changeable Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code 03h 1 Page Length 16h 2 3 Tracks Per Zone 4 5 Alternate Sectors Zone 6 7 Alternate Trac...

Страница 173: ...GB XX for 73 4 GB Sectors Track 413 The number of Physical Block Address sectors per track The value depends on the Notch value selected in the Notch and Partitions page Data Bytes Physical Sector 51...

Страница 174: ...eometry Bit Byte 7 6 5 4 3 2 1 0 0 PS Rsvd Page Code 04h 1 Page Length 16h 2 4 Number of Cylinders 5 Number of Heads 6 8 Starting Cylinder Write Precompensation 9 11 Starting Cylinder Reduced Write Cu...

Страница 175: ...abled Starting Cylinder 0 The value in this field is the physical cylinder at Reduced Write Current which write current is reduced The first cylinder number is 0 If the starting cylinder for reduced w...

Страница 176: ...es when synchronized The rotational offset is applied in the retarded direction lagging the synchronized spindle master The value in the field is determined by the following formula Offset 0 255 256 F...

Страница 177: ...e Length 0Eh 2 Reserved Cache Table Size 3 15 Reserved Figure 5 46 Vendor Unique Caching Page Data Format Table 5 50 Vendor Unique Caching Field Description Field Value Description PS 0 Parameters Sav...

Страница 178: ...k Descriptor Data Format Refer to Tables 5 45 5 46 and 5 51 for descriptions of the fields Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 5Ah 1 Logical Unit Number Reserve d DBD Reserved 2 6 Reserved 7 8 M...

Страница 179: ...f no Block Descrptor is supplied the length is 8 if a block descriptor is supplied Density Code Ignored by the drive Number of Blocks The value in this field specifies the number of logical blocks on...

Страница 180: ...hat has RESERVE 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 wi...

Страница 181: ...stration Refer to Figure 5 51 and Table 5 53 for information about Read Keys parameter data A Read Reservation service action requests that the device server return a parameter list that contains a he...

Страница 182: ...NT RESERVATION OUT command that is not done due to an error or a reservation conflict The value in the Generation field is set to 0 as part of the power on or reset processes The value in the Generati...

Страница 183: ...that perform a Reserve or Release service action or by a PERSISTENT RESERVATION OUT command that is not done due to an error or a reservation conflict The value in the Generation field is set to 0 as...

Страница 184: ...ions Descriptor Field Descriptions Data Field Description Reservation Key The Reservation key field contains an 8 byte value that identifies the reservation key under which the persistent reservation...

Страница 185: ...nit defined by the Scope Specific Address and Extent Length fields in the PERSISTENT RESERVATION OUT command s parameter list Note that an extent is defined only for devices defining contiguous logica...

Страница 186: ...e persistent reservations do not conflict with any reservations already known to the device server 1h WRITE Exclusive READS Shared any application client on any initiator may execute commands that per...

Страница 187: ...d any application client on any initiator may execute commands that perform transfers from the disk to the initiator WRITES Shared any application client on any initiator may execute commands that per...

Страница 188: ...r 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 performed a Regi...

Страница 189: ...ive Access RO LU EX LU READ Shared 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 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...

Страница 190: ...TENT 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...

Страница 191: ...codes available are Code Name Description 00h Register Register a reservation key with the device server 01h Reserve Create a persistent reservation using a reservation key 02h Release Release a persi...

Страница 192: ...When Extent is the scope it indicates that the persistent reservation applies to the extent of the logical unit defined by the Scope Specific Address and Extent Length fields in the PERSISTENT RESERVA...

Страница 193: ...When the command executes a Register service action it registers a reservation key with a device server without generating a reservation The device server holds these reservation keys from each initi...

Страница 194: ...ed with a Release service action match fields of the active persistent reservation Sending of a PERSISTENT RESERVATION OUT command that specifies a Release service action when no persistent reservatio...

Страница 195: ...RVATION OUT command is sent that specifies a Pre empt service action and no persistent reservation exists for the initiator identified by the Service action Reservation key it is not an error conditio...

Страница 196: ...ect to the persistent reservation restrictions set by the pre empting initiator The persistent reservation thus created by the pre empting initiator is defined by the Scope and Type fields of the PERS...

Страница 197: ...e persistent reservations do not conflict with any reservations already known to the device server 1h WRITE Exclusive READS Shared any application client on any initiator may execute commands that per...

Страница 198: ...ed any application client on any initiator may execute commands that perform transfers from the disk to the initiator WRITES Shared any application client on any initiator may execute commands that pe...

Страница 199: ...in a reservation conflict ADDITIONAL RESERVATIONS Allowed any initiator may reserve the logical unit extents or elements as long as the persistent reservations to not conflict with any reservations a...

Страница 200: ...f the Service Action Reservation Key to match any registered keys results in the device server returning a RESERVATION CONFLICT status Scope Specific Address If the Scope is an Extent reservation this...

Страница 201: ...tion Key Element or Element Parameters Register Ignored Ignored Valid Ignored Reserve Reserve Reserved LU Extent Element Valid Valid Valid Ignored Ignored Ignored Ignored Extent Valid Element Valid Re...

Страница 202: ...ration Code 08h 1 Reserved Logical Block Address 2 3 Logical Block Address continued 4 Transfer Length 5 Control Figure 5 56 READ 6 Command Data Format Table 5 63 READ 6 Command Field Descriptions Fie...

Страница 203: ...SCSI Description 5 136 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 204: ...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...

Страница 205: ...SCSI Description 5 138 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 206: ...policies of the drive controller or other kinds of diagnostic and verification work Both the READ BUFFER and the WRITE BUFFER commands have a buffer ID and a buffer offset data field defined in their...

Страница 207: ...cified the buffer referenced is the 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 mu...

Страница 208: ...dress 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 Logical Block Address Figure 5 60 is that of the la...

Страница 209: ...he READ CAPACITY Returned Data Data Format that shall be sent during the data in buffer transfer for the command Refer to the PMI description in Table 5 66 for a description of these data fields Bit B...

Страница 210: ...List Format 3 6 Reserved 7 8 MSB Allocation Length LSB 9 Control Figure 5 61 READ DEFECT DATA 10 Command Data Format Table 5 67 READ DEFECT DATA 10 Command Field Description Field Description PList Wh...

Страница 211: ...he READ DEFECT DATA commands The data returned from this mode does not include defects outside normal user space Note that the vendor unique format is proprietary in nature and thus is not documented...

Страница 212: ...st When the value is 0 the returned data does not include the Grown Defect List When the value is 1 the returned data includes the Grown Defect List Defect List Format This field indicates the format...

Страница 213: ...SCSI Description 5 146 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 214: ...2 5 Reserved 6 9 MSB Allocation Length LSB 10 Reserved 11 Control Figure 5 65 READ DEFECT DATA 12 Command Data Format Table 5 69 READ DEFECT DATA 12 Command Field Description Field Description PList W...

Страница 215: ...he READ DEFECT DATA commands The data returned from this mode does not include defects outside normal user space Note that the vendor unique format is proprietary in nature and thus is not documented...

Страница 216: ...fect List When the value is 0 the returned data does not include the Grown Defect List When the value is 1 the returned data includes the Grown Defect List Defect List Format This field indicates the...

Страница 217: ...SCSI Description 5 150 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 218: ...Field Descriptions 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 pe...

Страница 219: ...during the READ LONG Command s data in buffer transfer The returned data always consists of 512 bytes of data followed by a two LBA bytes two EDC bytes and 46 ECC related bytes Bit Byte 7 6 5 4 3 2 1...

Страница 220: ...ock of the corresponding READ 10 COMMAND This allows a SEEK to begin immediately The LBA of the following READ 10 command must the same as the LBA of the READ SKIP MASK command Skip Mask Length This f...

Страница 221: ...SCSI Description 5 154 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 222: ...ure 5 74 Table 5 73 contains the field description for the Defect List Header If multiple Logical Block Addresses are specified they are listed in ascending order The REASSIGN BLOCKS Command Descripto...

Страница 223: ...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 s...

Страница 224: ...S Command Descriptor Block is shown in Figure 5 75 the data fields are described in Table 5 75 To receive one or both of the two diagnostic pages that are available the initiator first sends the desir...

Страница 225: ...d 1Ch Table 5 75 RECEIVE DIAGNOSTIC RESULTS Command Descriptor Block Field Descriptions Field Description Allocation Length Specifies the number of bytes of diagnostic page results the drive is allowe...

Страница 226: ...served 2 3 Page Length 0002h 4 Supported Diagnostics Pages Page 00h 5 Translate Address Page 40h Figure 5 76 Supported Diagnostics Pages Page Data Format To obtain the Supported Diagnostics Pages list...

Страница 227: ...ne of the other formats The address to be translated is passed to the drive with the SEND DIAGNOSTIC command and the results are returned to the initiator by the RECEIVE DIAGNOSTIC RESULTS command Fig...

Страница 228: ...TRK Reserved Translate Format 101b Physical Sector 6 8 Translated Address Cylinder Number 1 9 Translated Address Head Number 1 10 13 Translated Address Sector Number or Bytes From Index 1 y y 2 Transl...

Страница 229: ...r on the disk When ALTSEC is 0 it indicates either that no part of the translated address is located in an alternate sector of the medium or that the drive is unable to determine this information ALTT...

Страница 230: ...ue 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 reservation was made by the initiator using a third party r...

Страница 231: ...SCSI Description 5 164 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 232: ...nd is used to release a previously reserved logical unit The drive will not return an error if the initiator attempts to release a reservation that is not currently valid Bit Byte 7 6 5 4 3 2 1 0 0 Op...

Страница 233: ...Party Device ID value that is connected with the reservation release is smaller than 255 the LongID bit may be 0 and the ID value sent in the CDB If LongID bit 0 the Parameter List Length field also 0...

Страница 234: ...mat Table 5 79 REPORT DEVICE IDENTIFIER Command Descriptor Block Field Descriptions Field Description Service Action Must 05h Any other value forces Check Condition Illegal Request Allocation Length I...

Страница 235: ...ns Field Description Identifier Length This field specifies the length in bytes of the Identifier field If the Allocation Length field in the CDB is insufficient in size to transfer all of the Identif...

Страница 236: ...e 7 6 5 4 3 2 1 0 0 Operation Code A0h 1 5 Reserved 6 9 MSB Allocation Length LSB 10 Reserved 11 Control Figure 5 82 REPORT LUNS Command Descriptor Block Data Format Table 5 81 REPORT LUNS Command Des...

Страница 237: ...an one Figure 5 83 LUN Reporting Parameter List Data Format The LUN List Length field contains the length in bytes of the LUN list that can be transferred The LUN list length equals the number of logi...

Страница 238: ...ives can return a maximum of 18 bytes of sense data The initiator should set this field to the maximum value to receive all the sense data 5 34 1 Sense Data Availability Sense data is available if the...

Страница 239: ...rors specific to the command when an unrecovered 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...

Страница 240: ...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 Information 12 Additional Sense Code 13 Additional Sense Code Qualifi...

Страница 241: ...ported by the drive are described in Table 5 84 Information The Information field contains the following device type or command specific information 1 The unsigned logical sector address associated wi...

Страница 242: ...ated logical unit This is the case for a successful command or a command that received CHECK CONDITION or COMMAND TERMINATED status because one of the following bits is set to 1 File Mark EOM or ILI R...

Страница 243: ...he drive is reset by a TARGET RESET message a hard reset condition or by a power on reset Other conditions that generate a UNIT ATTENTION include The mode parameters in effect for this initiator have...

Страница 244: ...e first Logical Block Address is returned READ LONG RECOVERED MEDIUM ERROR READ 6 10 error recovery qualifiers apply The information field echoes this command s Logical Block Address field ILLEGAL REQ...

Страница 245: ...t Logical Block Address is returned WRITE AND VERIFY RECOVERED MEDIUM ERROR WRITE 6 10 error recovery qualifiers apply This field contains the Logical Block Address that may have failed the write or v...

Страница 246: ...agement Enabled Drive is in STANDBY Sub State Standby Timer Timed Out 5E 03 Power Management State Sleep 01h RECOVERED ERROR 02 00 No Seek Complete 03 00 Write Fault Recovered 03 01 Pre Amp WRITE Unsa...

Страница 247: ...LBA Mismatch Error Recovered 41 86 Required H W Process Did Not Complete Recovered 42 00 Power On or Self Test Failed 5D 00 SMART Tripped 5D 01 TA Error Rate Threshold Exceeded 5D 02 READ or WRITE Err...

Страница 248: ...Grown List 31 00 Drive Not Ready Format Corrupted 31 01 FORMAT UNIT Command Failed 40 80 Diagnostics Failure Unknown Reason 40 81 Diagnostics Failure RAM Failure 40 82 Diagnostics Failure Inconsisten...

Страница 249: ...or 16 83 Spoke Synchronization Mark Error 18 00 Recoverable ECC Error 19 00 Defect List in Error 19 01 Defect List Error Unknown Format 19 03 Defect List Error in Grown List 19 80 Replacement Block Ba...

Страница 250: ...ion Results Are Bad 06 81 BIAS Calibration Results Are Bad 06 82 GAMMA Calibration Results Are Bad 06 83 Recalibration Record Timeout 06 84 Seek Fail During Feedforward Scal Calibration 06 85 Initial...

Страница 251: ...During pes Linearization Table Update 06 9B Motor Speed Error After Turbo Spin Recovery 09 00 Track Following Error 09 90 Svo No Error 09 91 Svo TA Err 1st 09 92 Svo TA Err 2nd 09 93 Svo Bad Sync 1st...

Страница 252: ...sed 40 80 Diagnostics Failure Unknown Reason 40 81 Diagnostics Failure RAM Failure 40 82 Diagnostics Failure Inconsistent Data or Bugcheck Error code in information field 40 83 Diagnostics Failure HDA...

Страница 253: ...ist Length Error 20 00 Invalid Command Operation Code 20 80 R4K Image Loader Bad 20 81 R4K System Micro OCM Code Image Not in EEROM Bad 20 82 R4K Diagnostic Code Image Not in EEROM Bad 20 FE ETM Canno...

Страница 254: ...icrocode has Changed 5C 01 Spindle Sync d 5C 02 Spindle Not Sync d 5D 00 SMART Tripped 5D 01 TA Error Rate Threshold Exceeded 5D 02 READ or WRITE Error Rate Thresh Exceeded 5D 0B SMART Triggered Due t...

Страница 255: ...5 86 Descriptor Block or data out buffer transfer parameters NOT READY Progress Indication Indicates progress of FORMAT UNIT Figure 5 87 Command RECOVERED ERROR Retry count Number of retries for I O...

Страница 256: ...d 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...

Страница 257: ...000h as the denominator Progress Indication 10000h percent complete The data format of the Retry Count bytes associated with the MEDIUM ERROR or RECOVERED ERROR sense key is shown in Figure 5 88 the d...

Страница 258: ...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 preser...

Страница 259: ...entire logical units The value must be 0 Reservation Identification Any value in this field is ignored by the drive Extent List Length Any value in this field is ignored by the drive NOTE The drive re...

Страница 260: ...iple initiator systems The RESERVE command is used to reserve a logical unit If RESERVE 10 is used then RELEASE 10 is also used Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 56h 1 Reserved 3rdPty Reserved...

Страница 261: ...tempt to release the reservation made by any other initiator For example if ID7 sends ID2 a Third Party reservation on behalf of ID6 the target at ID2 gets reserved for the initiator ID6 then only ID7...

Страница 262: ...ent Any initiator may read from the extent 01b WRITE exclusive No other initiator may write to the indicated extent Any initiator may read from the extent 10b READ exclusive While this reservation is...

Страница 263: ...E 10 Command 56h continued If the LongID bit 1 and the Extent bit 0 then the parameter list length is eight and the parameter list has the format shown in Figure 5 93 Bit Byte 7 6 5 4 3 2 1 0 0 7 MSB...

Страница 264: ...ay at cylinder 0 periodic calibrations 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...

Страница 265: ...SCSI Description 5 198 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 266: ...dress The drive responds by 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 peri...

Страница 267: ...SCSI Description 5 200 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 268: ...al Block Address The drive responds by 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...

Страница 269: ...SCSI Description 5 202 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 270: ...the parameters that follow conform to the Supported Diagnostic Page List Figure 5 96 or the Translate Address Page Figure 5 97 SelfTest is ignored when PF 1 The PF bit must be 1 if Parameter List Leng...

Страница 271: ...1 0 0 Page Code 00h 1 Reserved 2 3 Page Length 00h Figure 5 98 Supported Diagnostic Page List Data Format 5 40 2 Translate Address Page Figure 5 99 shows the Translate Address Page that can be supplie...

Страница 272: ...Figure 5 100 SET DEVICE IDENTIFIER Command Descriptor Block Data Format Table 5 95 SET DEVICE IDENTIFIER Command Descriptor Block Field Descriptions Field Description Service Action Must 06h Any othe...

Страница 273: ...to which the command is sent Bit Byte 7 6 5 4 3 2 1 0 0 n MSB Identifier LSB Figure 5 101 SET DEVICE IDENTIFIER Parameter List Data Format Table 5 96 SET DEVICE IDENTIFIER Parameter List Field Descri...

Страница 274: ...5 Control Figure 5 102 START STOP UNIT Command Descriptor Block Data Format Table 5 97 START STOP UNIT Command Field Descriptions Field Description Immed Immediate When 1 the drive returns GOOD statu...

Страница 275: ...SCSI Description 5 208 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 276: ...cal Block Address 6 Reserved 7 8 Number of Blocks 9 Control Figure 5 103 SYNCHRONIZE CACHE Command Descriptor Block Data Format Table 5 98 SYNCHRONIZE CACHE Command Field Descriptions Field Descriptio...

Страница 277: ...SCSI Description 5 210 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 278: ...the drive is ready to receive medium access 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 s...

Страница 279: ...SCSI Description 5 212 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 280: ...owest priority for being fetched into or retained by the cache When DPO 0 the priority shall be determined by fields in the Caching page BytChk Byte Check When the value is 1 the drive performs a byte...

Страница 281: ...SCSI Description 5 214 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 282: ...n Code 0Ah 1 Reserved Logical Block Address 2 3 Logical Block Address 4 Transfer Length 5 Control Figure 5 106 WRITE 6 Command Descriptor Block Data Format Table 5 100 WRITE 6 Command Field Descriptio...

Страница 283: ...SCSI Description 5 216 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 284: ...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 ignored FUA Force Unit Access When 1...

Страница 285: ...SCSI Description 5 218 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 286: ...r to bypass cache as much as possible The buffers used for the WRITE data are given a low priority This bit may be useful if the host CPU is performing a background copy operation and does not want to...

Страница 287: ...d 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 write and verif...

Страница 288: ...e WRITE BUFFER command supports controller microcode downloads Both the READ BUFFER and WRITE BUFFER commands have a Buffer ID and a Buffer Offset data field defined in their Command Descriptor Block...

Страница 289: ...the number of sectors track multiplied by 512 This value must be either a zero or a multiple of 512 Parameter List Length This value must be a multiple of 512 The maximum value for this field is one...

Страница 290: ...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...

Страница 291: ...SCSI Description 5 224 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 292: ...nd Field Descriptions Field Description PBdata Physical Block Data Not supported This field must be zero LBdata Logical Block Data A value of 1 requests that the drive replace the first four bytes of...

Страница 293: ...SCSI Description 5 226 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 294: ...logical block of the corresponding WRITE 10 COMMAND This allows a SEEK to begin immediately The LBA of the following WRITE 10 command must the same as the LBA of the WRITE SKIP MASK command Skip Mask...

Страница 295: ...SCSI Description 5 228 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 296: ...tus The sense data is set to ILLEGAL REQUEST INVALID FIELD IN CDB Bit Byte 7 6 5 4 3 2 1 0 0 Operation Code 52h 1 Reserved 2 5 Logical Block Address 6 Reserved 7 8 Transfer Length 9 Control Figure 5 1...

Страница 297: ...SCSI Description 5 230 Quantum Atlas 10K II Ultra160 m SCSI Hard Disk Drives...

Страница 298: ...s 6 Reserved 7 8 Transfer Length 9 Control Figure 5 114 XDWRITE 10 Command Descriptor Block Data Format Table 5 108 XDWRITE 10 Command Field Descriptions Field Description DPO Disable Page Out When th...

Страница 299: ...ld Description Logical Block Address Specifies the address of the first logical block where the WRITE operation will occur Transfer Length Specifies the number of contiguous logical blocks to write Th...

Страница 300: ...0 Operation Code 51h 1 Reserved DPO FUA Reserved 2 5 Logical Block Address 6 Reserved 7 8 Transfer Length 9 Control Figure 5 115 XPWRITE 10 Command Descriptor Block Data Format Table 5 109 XPWRITE 10...

Страница 301: ...ifies the address of the first logical block from which to read data from its medium and the first logical sector to which to write the XOR data back to its medium Transfer Length Specifies the number...

Страница 302: ...chnology S M A R T Revision 2 support ORCA Optimized Reordering Command Algorithm and tagged command queuing for greater throughput SCAM 2 SCSI Configured AutoMatically Auto ID configuration 8 MB Trac...

Страница 303: ...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 prefetch After the contr...

Страница 304: ...s After the drive has determined that there will be a delay it disconnects itself from the SCSI bus by sending a DISCONNECT message and enters the BUS FREE phase When the drive is ready to resume data...

Страница 305: ...th 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 th...

Страница 306: ...Data can be verified in two ways First the integrity of data in selected areas of the media can be checked using the VERIFY command Secondly the WRITE AND VERIFY command writes host supplied data and...

Страница 307: ...Negotiation a toggle type parameter that allows the initiator to move between asynchronous and synchronous modes of data transfer Write Protect Prevents writing to the disk drive Spin Delay specifies...

Страница 308: ...ic servo functions After a SELECTION TIME following power on the disk drive is able to respond with appropriate status and sense data to the TEST UNIT READY INQUIRY and REQUEST SENSE commands 6 15 2 P...

Страница 309: ...led is attempted without host intervention 6 16 1 Seek Error Recovery Seek error recovery is automatic if the hardware is physically able to position to the correct track 6 16 2 Data Read Errors Data...

Страница 310: ...versatility to SCSI disks LVD uses lower level voltage swings differential signaling and double transition DT clocking to allow a maximum bus speed of 160MB second in wide SCSI configurations The Atla...

Страница 311: ...efore LVD was introduced HVD was simply called Differential SCSI All single ended only devices connect the DIFFSENS signal to ground On an LVD bus the terminators drive the DIFFSENS signal to 1 3 volt...

Страница 312: ...led Double Transition DT clocking uses both the rising and falling edges of the REQ and ACK signals to clock data into the receiving device This has the advantage of allowing the REQ and ACK signals t...

Страница 313: ...can detect configuration problems such as Wide devices with a narrow bus segment between them DT devices connect through an ST expander Broken connections It may also detect poor quality cables margi...

Страница 314: ...serted it is desirable that the input receivers ignore short low amplitude transients usually via a low pass filter LVD SCSI devices may require more stringent system design to tolerate transients tha...

Страница 315: ...Feature Descriptions 6 14 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...

Страница 316: ...used in SCSI 2 documents Table A 2 contains the SCSI 3 commands and op codes Table A 1 SCSI 2 SCSI 3 Equivalent Terminology SCSI 2 SCSI 3 abort abort task set abort tag abort task bus device reset tar...

Страница 317: ...6 08 READ 10 28 READ BUFFER 3C READ CAPACITY 25 READ DEFECT DATA 37 READ LONG 3E READ MASK SKIP E8 REASSIGN BLOCKS 07 RECEIVE DIAGNOSTIC RESULTS 1C RELEASE 6 17 RELEASE 10 57 REPORT DEVICE IDENTIFIER...

Страница 318: ...MAND COMPLETE 00 CONTINUE I O PROCESS 12 DISCONNECT 04 HEAD OF QUEUE TAG 21 IDENTIFY 80 FF IGNORE WIDE RESIDUE 25 INITIATOR DETECTED ERROR 05 LINKED COMMAND COMPLETE 0A LINKED COMMAND COMPLETE w FLAG...

Страница 319: ...t n Error Events 07 4D Medium Types Supported 0B 1A Negotiated Rate Information 4C 12 Non Medium Error Counter 06 4D Notch and Partition 0C 15 55 Peripheral Device 09 1A 5A Power Condition 0D 15 Quant...

Страница 320: ...s 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 Table A 5 S...

Страница 321: ...Appendix A Quick Reference A 6 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...

Страница 322: ...ive asserts REQ while using standard synchronous data transfers also the minimum time that an initiator asserts ACK while using standard slow synchronous data transfers Bus Clear Delay 800 ns Maximum...

Страница 323: ...ansfers also the minimum time than an initiator negates ACK while using standard slow synchronous data transfers Power On to 10 s Recommended maximum time from power Selection Time application until a...

Страница 324: ...ured between any two SCSI devices while using fast synchronous data transfers Fast Deskew Delay 20 ns Minimum time required to wait for all signals especially data signals to stabilize at their correc...

Страница 325: ...ase timing values for ST and DT devices respectively Table B 2 SCSI 3 Bus Control Timing Description Values Arbitration Delay 2 4 s Bus Clear Delay 800 ns Bus Free Delay 800 ns Bus Set Delay 1 6 s Bus...

Страница 326: ...iod Tolerance N A 1 1 ns 1 1 ns 1 1 ns 1 1 ns Signal Timing Skew 8 ns 8 ns 8 ns 5 ns 4 5 ns REQ ACK Period N A 200 ns 100 ns 50 ns 25 ns Transmit Assertion Period note 2 N A 80 ns 30 ns 15 ns 8 ns Tra...

Страница 327: ...40 ns 20 ns 10 ns Receive Setup Time note 2 and note 3 11 6 ns 5 8 ns 2 9 ns 1 45 ns Receive REQ ACK Period Tolerance 0 7 ns 0 7 ns 0 7 ns 0 7 ns Signal Timing Skew 26 8 ns 13 4 ns 6 7 ns 3 35 ns REQ...

Страница 328: ...EE phase BSY and SEL both false for a bus settle delay until its assertion of the BSY signal in preparation for entering the ARBITRATION phase Bus Set Delay The maximum time for a SCSI device to asser...

Страница 329: ...riod during synchronous data transfers is measured from an assertion edge of the REQ ACK signal to the next assertion edge of the signal In DT DATA phases the nominal transfer period for data is half...

Страница 330: ...arg Targ Init Targ Targ COMMAND Targ None Targ Init Init None DATA IN Targ None Targ Init Targ Targ DATA OUT Targ None Targ Init Init Init STATUS Targ None Targ Init Targ None MESSAGE IN Targ None Tar...

Страница 331: ...nsfer modes On the drive the SCSI ID is assigned by configuring jumpers or remote switches to the option connector in normal 3 bit or 4 bit binary fashion Chapter 2 has full instructions on setting th...

Страница 332: ...1 when the signal value is true low voltage and 0 when the signal value is false high voltage Data parity DB P is odd Parity is undefined during ARBITRATION DB 15 8 P1 data bus Eight data bit signals...

Страница 333: ...red following the release of the SEL signal after a SELECTION or RESELECTION phase time out The BUS FREE phase normally does not begin because of the drive s release of the BSY signal unless it has oc...

Страница 334: ...bers 7 through 0 then 15 through 8 Arbitration Sequence 1 The SCSI device waits for the BUS FREE phase to occur 2 The SCSI device waits a minimum of one bus free delay after detection of the BUS FREE...

Страница 335: ...by not asserting the I O signal During SELECTION the I O signal is negated so that this phase can be distinguished from the RESELECTION phase Selection Sequence The initiator 1 Sets the DATA BUS to th...

Страница 336: ...onse from the drive 1 The initiator asserts the RST signal 2 The initiator follows these steps a continues asserting the SEL and ATN signals and releases the DATA BUS b If it has not detected the BSY...

Страница 337: ...d or if more than two SCSI ID bits are on the DATA BUS The drive 11 Detects the BSY signal is true 12 Asserts the BSY signal 13 Waits at least two deskew delays 14 Releases the SEL signal The drive ca...

Страница 338: ...EQ signal of the first handshake and remain valid after the negation of the ACK signal at the end of the handshake of the last transfer of the phase After the negation of the ACK signal of the last tr...

Страница 339: ...drive invokes this phase in response to the attention condition created by the initiator The drive handshakes byte s until the ATN signal is negated except when rejecting a message See Message Out Ad...

Страница 340: ...til after the leading edge of the next ACK pulse is received For successful completion of the data phase the number of ACK and REQ pulses must be equal The initiator sends one ACK signal pulse for eac...

Страница 341: ...drives the DB 7 0 P signals to the desired values if no offset is to be applied to the transfer If a REQ ACK offset is used the initiator waits up to the maximum negotiated offset before driving the d...

Страница 342: ...When changing the DATA BUS direction from out initiator driving to in drive driving the drive delays driving the DATA BUS by at least a data release delay plus one bus settle delay after asserting th...

Страница 343: ...ror is detected and can ignore all remaining messages sent under one ATN condition after a parity error is detected When a sequence of messages is re sent by an initiator because of a drive detected p...

Страница 344: ...g the ACK signal for the last byte transferred in the current bus phase Asserting the ATN signal later cannot be honored until a later bus phase and then cannot result in the expected action A drive r...

Страница 345: ...drive employs the hard reset alternative for bus RESET processing Write cache data is preserved across a SCSI reset and will be flushed to the media The hard reset means that upon detection of the res...

Страница 346: ...st be either an IDENTIFY ABORT TASK SET or TARGET RESET message If not the drive discards the message saves no status information and goes to the BUS FREE phase If an initiator supplies an unsupported...

Страница 347: ...G 20h In Out RELEASE RECOVERY 10h Out SAVE DATA POINTER 02h In SYNCHRONOUS DATA TRANSFER 01h In Out REQUEST 4 TARGET RESET 2 BUS DEVICE RESET 0Ch Out TARGET TRANSFER DISABLE 13h Out TASK COMPLETE 2 CO...

Страница 348: ...ription Field Description Extended Message Length This field specifies the length in bytes of the Extended Message Code plus the Extended Message Arguments that follow Therefore the total length of th...

Страница 349: ...the task being performed when the message arrives If only an I_T nexus has been established that is a valid IDENTIFY message has not been received the drive goes to the BUS FREE phase without affectin...

Страница 350: ...onse Table B 13 Drive s Response to DISCONNECT Message BUS Phase Drive s Response SELECTION The drive discards the DISCONNECT message and goes to BUS FREE COMMAND The ATTENTION request is ignored whil...

Страница 351: ...the last REQ ACK handshake is less than the negotiated transfer width The Ignore Field contains the number of invalid data bytes transferred B 8 9 INITIATE RECOVERY Message 0Fh The drive informs the...

Страница 352: ...TATUS The drive switches to STATUS phase and attempts to re send the status byte to the initiator If another INITIATOR DETECTED ERROR message is received for the same nexus while the bus is in the sta...

Страница 353: ...ained a parity error If the bus phase was not Message In when the host asserted ATN the drive releases the SCSI bus B 8 14 MESSAGE REJECT Message 07h The MESSAGE REJECT message is sent from either the...

Страница 354: ...If a valid IDENTIFY message precedes the Queue Tag message but does not grant the disconnect privilege the drive fetches the Command Descriptor Block and immediately returns BUSY status Queue Tag mes...

Страница 355: ...SIMPLE message specifies that the task be placed in the drive s task queue If command reordering is enabled commands queued with a SIMPLE QUEUE TAG may be executed in an order that optimizes overall...

Страница 356: ...tstanding before the leading edge of its corresponding ACK pulse is received by the drive The agreement becomes invalid and reverts to asynchronous data transfer after any condition that can leave the...

Страница 357: ...must occur before synchronous data transfers can take place The drive or the initiator can initiate the SYNCHRONOUS DATA TRANSFER REQUEST message exchange based on the Initiate Sync Negotiation ISN pa...

Страница 358: ...r option and the synchronous data transfer option then the device negotiates the wide data transfer agreement before negotiating the synchronous data transfer agreement If a synchronous data transfer...

Страница 359: ...he same value in its WDTR message If it requires a smaller transfer width it substitutes the smaller value in its message Valid Transfer Width values are 00h 8 bit data transfer path standard data pat...

Страница 360: ...the protocol options between two SCSI devices Figure B 6 Bit Byte 7 6 5 4 3 2 1 0 0 Extended Message 01h 1 Extended Message Length 06h 2 Parallel Protocol Request 04h 3 Transfer Period Factor 4 Reser...

Страница 361: ...and greater than or equal to 50ns 19h 31h Transfer period the period factor x 4 Fast 10 data is latched using a transfer period of less than or equal to 196ns and greater than or equal to 100ns 32h F...

Страница 362: ...d that information units received from the responding SCSI device are not supported An IU_REQ bit 1 indicates that information units are to be enabled when received from the originator and that inform...

Страница 363: ...Appendix B SCSI Bus Signal Timing B 42 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...

Страница 364: ...L 1 Code Description 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 t...

Страница 365: ...nd greater than or equal to 100 ns 32h FFh Transfer period the period factor x 4 Fast 5 data is latched using a transfer period of less than or equal to 1020 ns and greater than or equal to 200 ns C 2...

Страница 366: ...Configuring SCSI ID for SCA 2 Connector Versions 3 12 Connect Time Limit 5 68 5 69 CONNECTOR PINOUTS AND WIRING DIAGRAMS 3 17 CONTINUE TASK Message B 29 Control Mode Page 5 76 Correction Span 5 65 5 6...

Страница 367: ...5 45 New Operating Definition 5 23 NO OPERATION Message B 34 NO SENSE 5 92 5 171 Non operating Environment 4 11 Normal commands 5 3 NOT READY 5 86 5 175 5 180 5 181 Notch and Partition Page 5 60 5 79...

Страница 368: ...Diagnostic Page List 5 204 Supported Page List 5 37 Supported Sense Keys 5 175 Supported Vital Product Data Pages Page 5 37 SYNCHRONIZE CACHE Command 5 209 SYNCHRONOUS DATA TRANSFER REQUEST Message B...

Страница 369: ...Index I 4 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...

Страница 370: ......

Страница 371: ...500 McCarthy Blvd Milpitas CA 95035 408 894 4000 www quantum com June 8 2000 81 122517 04...

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