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Cheetah 15K.5 SCSI Product Manual, Rev. H

5.1.3

Seek errors

A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an
initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails,
a seek positioning error (Error code = 15h or 02h) will be reported with a Hardware error (04h) in the Sense
Key. Recoverable seek errors are specified at Less than 10 errors in 10

8

seeks. Unrecoverable seek errors

(Sense Key = 04h) are classified as drive failures.

5.2

Reliability and service

You can enhance the reliability of Cheetah 15K.5 SCSI disc drives by ensuring that the drive receives ade-
quate cooling. Section 6.0 provides temperature measurements and other information that may be used to
enhance the service life of the drive. Section 8.3 provides recommended air-flow information.

5.2.1

Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)

These drives shall achieve an AFR of 0.62% (MTBF of 1,400,000 hours) when operated in an environment that
ensures the HDA case temperatures do not exceed the values specified in Section 6.4.1.

Operation at case temperatures outside the specifications in Section 6.4.1 may increase the AFR (decrease
the MTBF). AFR and MTBF statistics are population statistics that are not relevant to individual units.

AFR and MTBF specifications are based on the following assumptions for Enterprise Storage System environ-
ments:

• 8,760 power-on hours per year

• 250 average on/off cycles per year

• Operating at nominal voltages

• System provides adequate cooling to ensure the case temperatures specified in Section 6.4.1 are not

exceeded.

5.2.2

Preventive maintenance

No routine scheduled preventive maintenance shall be required.

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Содержание Cheetah ST3146855LW

Страница 1: ...Product Manual Cheetah 15K 5 SCSI 100384776 Rev H May 2009 ST3300655LW ST3300655LC ST3146855LW ST3146855LC ST373455LW ST373455LC ...

Страница 2: ...he United States and or other countries All other trademarks or registered trademarks are the property of their respective own ers One gigabyte or GB equals one billion bytes when referring to hard drive capacity Accessible capacity may vary depending on operating environment and formatting Quantitative usage examples for various applications are for illustrative purposes Actual quantities will va...

Страница 3: ...le to user 11 4 2 1 Seek time 12 4 2 2 Format command execution time minutes 1 12 4 2 3 Generalized performance characteristics 12 4 3 Start stop time 13 4 4 Prefetch multi segmented cache control 13 4 5 Cache operation 13 4 5 1 Caching write data 14 4 5 2 Prefetch operation 14 5 0 Reliability specifications 15 5 1 Error rates 15 5 1 1 Recoverable Errors 15 5 1 2 Unrecoverable Error 15 5 1 3 Seek ...

Страница 4: ...ription 44 8 2 Drive orientation 45 8 3 Cooling 45 8 4 Drive mounting 46 8 5 Grounding 46 9 0 Interface requirements 47 9 1 General description 47 9 2 SCSI interface messages supported 47 9 3 SCSI interface commands supported 48 9 3 1 Inquiry Vital Product data 52 9 3 2 Mode Sense data 53 9 4 SCSI bus conditions and miscellaneous features supported 57 9 5 Synchronous data transfer 58 9 5 1 Synchro...

Страница 5: ...mensions 34 Figure 8 LC mounting configuration dimensions 35 Figure 9 J5 jumper header on LW models only 42 Figure 10 J6 option select header on LW models only 43 Figure 11 Air flow suggested 45 Figure 12 LW model drive physical interface 68 pin J1 SCSI I O connector 59 Figure 13 LC model drive physical interface 80 pin J1 SCSI I O connector 60 Figure 14 SCSI daisy chain interface cabling for LW d...

Страница 6: ......

Страница 7: ...s described in the ANSI SCSI SPI 4 interface specifications to the extent described in this manual The SCSI Interface Manual part number 100293069 describes general SCSI interface characteristics of this and other families of Seagate drives From this point on in this product manual the reference to Cheetah 15K 5 SCSI models is referred to as the drive unless references to individual models are nec...

Страница 8: ...2 Cheetah 15K 5 SCSI Product Manual Rev H ...

Страница 9: ...stem integration and installation into a suitable enclosure prior to use As such the drive is supplied as a subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and Regulations nor the Radio Interference Regulations of the Canadian Department of Communica tions The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides reason...

Страница 10: ... of Information and Communication MIC logo it complies with paragraph 1 of Article 11 of the Electromagnetic Compatibility EMC Control Regulation and meets the Electromagnetic Compatibility Framework requirements of the Radio Research Laboratory RRL Ministry of Information and Communication Republic of Korea This drive has been tested and complies with the Electromagnetic Interference Electromagne...

Страница 11: ...gulatory Agency Specifications Seagate P N 75789512 SCSI Commands Reference Manual Seagate P N 100293068 Parallel SCSI Interface Product Manual Seagate P N 100293069 Applicable ANSI small computer system interface SCSI document numbers T10 1143D Enhanced SCSI Parallel Interface EPI T10 1416D Primary Commands 3 SPC 3 T10 1417D SCSI Block Commands SBC 2 T10 1157D SCSI Architectural Model 2 SAM 2 T10...

Страница 12: ...6 Cheetah 15K 5 SCSI Product Manual Rev H ...

Страница 13: ... SCSI family of drives the Parallel SCSI Interface Manual part number 100293069 and the SCSI Commands Reference Manual part number 100293068 which describe the gen eral interface characteristics of this and other families of Seagate SCSI drives The drive s interface supports multiple initiators disconnect reconnect self configuring host software and log ical block addressing The head and disc asse...

Страница 14: ...oadable via SCSI interface Selectable even byte sector sizes from 512 to 528 bytes sector Programmable sector reallocation scheme Flawed sector reallocation at format time Programmable auto write and read reallocation Reallocation of defects on command post format ECC burst correction length of up to 400 Sealed head and disc assembly No preventative maintenance or adjustment required Dedicated hea...

Страница 15: ...r project planning as it ensures a stable operating point with backward and forward compatibility from generation to generation The current guaranteed operating points for this product are 2 Seagate drives also may be used at the maximum available capacity at a given sector size but the excess capacity above the guaranteed level will vary between 10K and 15K families and from generation to gener a...

Страница 16: ...e factory also ships with the drive a small bag of jumper plugs used for the J5 and J6 option select jumper headers on LW models only 3 7 Options factory installed All customer requested options are incorporated during production or packaged at the manufacturing facility before shipping Some of the options available are not an exhaustive list of possible options Other capacities can be ordered dep...

Страница 17: ...e Cheetah 15K 5 SCSI family unless otherwise spec ified Refer to the Parallel SCSI Interface Manual for additional timing details ST3300655LW ST3300655LC ST3146855LW ST3146855LC ST373455LW ST373455LC Drive capacity 300 0 146 8 73 4 GBytes formatted Read write heads 8 4 2 Tracks surface total 74 340 74 340 74 340 Tracks user accessible Tracks inch 125 000 125 000 125 000 TPI Peak bits inch 890k 890...

Страница 18: ...ted and no cable loss Not including controller overhead msec 1 2 1 Typical access times are measured under nominal conditions of temperature volt age and horizontal orientation as measured on a representative sample of drives 2 Access to data access time latency time Read Write Average Typical 3 5 4 0 Single Track Typical 0 2 0 4 Full Stroke Typical 6 8 7 5 ST3300655LW ST3300655LC ST3146855LW ST31...

Страница 19: ... is noted in Section 4 5 1 and Section 4 5 2 All default cache and prefetch Mode parameter values Mode Page 08h for standard OEM versions of this drive family are given in Table 10 4 5 Cache operation Note Refer to the SCSI Interface Manual for more detail concerning the cache bits Of the 16 Mbytes physical buffer space in the drive approximately 13 000 kbytes can be used as a cache The buffer is ...

Страница 20: ...nto when the end of the segment is reached the data is written into the beginning of the same cache segment overwriting the data that was written there at the beginning of the operation however the drive does not overwrite data that has not yet been written to the medium If write caching is enabled WCE 1 then the drive may return Good status on a write command after the data has been transferred i...

Страница 21: ...erable Errors Recoverable errors are those detected and corrected by the drive and do not require user intervention Recoverable Data errors will use correction although ECC on the fly is not considered for purposes of recov ered error specifications Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read and using write bits transferred fo...

Страница 22: ... used to enhance the service life of the drive Section 8 3 provides recommended air flow information 5 2 1 Annualized Failure Rate AFR and Mean Time Between Failures MTBF These drives shall achieve an AFR of 0 62 MTBF of 1 400 000 hours when operated in an environment that ensures the HDA case temperatures do not exceed the values specified in Section 6 4 1 Operation at case temperatures outside t...

Страница 23: ...l I O processes for all devices on the bus must be completed and the bus qui esced before attempting to hot plug Following the insertion of the newly installed device the SCSI host adapter must issue a Bus Reset followed by a synchronous transfer negotiation Failure to perform the SCSI Bus Reset could result in erroneous bus operations The SCSI bus termination and termination power source shall be...

Страница 24: ...thod the firmware will issue a 01 5D00 sense code to the host The error code is preserved through bus resets and power cycles Determining rate S M A R T monitors the rate at which errors occur and signals a predictive failure if the rate of degraded error rate increases to an unacceptable level To determine rate error events are logged and compared to the num ber of total operations for a given at...

Страница 25: ...xceptions Control IEC mode page 1Ch The current algorithm implements two temperature trip points The first trip point is set at 68 C which is the maximum temperature limit according to the drive specification The second trip point is user selectable using the Log Select command The reference temperature parameter in the temperature log page see Table 2 can be used to set this trip point The defaul...

Страница 26: ...ostic command There are multiple reasons why a drive may not be ready some of which are valid conditions and not errors For example a drive may be in process of doing a format or another DST It is the responsibility of the host application to determine the not ready cause While not technically part of DST a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive A ...

Страница 27: ... the log page to non volatile memory After a self test is complete or has been aborted the drive updates the Self Test Results Value field in its Self Test Results Log page in non volatile memory The host may use Log Sense to read the results from up to the last 20 self tests performed by the drive The self test results value is a 4 bit field that reports the results of the test If the field is ze...

Страница 28: ... refuse receipt of components improperly packaged or obviously damaged in tran sit Contact your Authorized Seagate Distributor to purchase additional boxes Seagate recommends shipping by an air ride carrier experienced in handling computer equipment Product repair and return information Seagate customer service centers are the only facilities authorized to service Seagate drives Seagate does not s...

Страница 29: ...ts for a single drive are shown in the following table Values indicated apply at the drive power connector The tables show current values in Amperes Table 3 ST3300655LC DC power requirements Notes LVD mode Voltage 5 V 12 V Regulation 5 5 5 2 Average idle current DC X 1 6 0 70 0 80 Maximum starting current peak DC DC peak AC AC 3σ 3σ 3 3 0 76 1 07 1 94 3 35 Delayed motor start max DC 3σ 1 4 0 57 0 ...

Страница 30: ... are relocated every 60 seconds to a random location within the band from three quarters to maximum track General Notes for Tables 3 4 and 5 1 Minimum current loading for each supply voltage is not less than 1 2 of the maximum operating current shown 2 The 5 and 12 volt supplies shall employ separate ground returns 3 Where power is provided to multiple drives from a common supply careful considera...

Страница 31: ...he SCSI bus terminator to ensure proper termination of the peripheral I O cables To automatically delay motor start based on the target ID SCSI ID enable the Delay Motor Start option and disable the Enable Motor Start option on the J6 connector on LW mod els or on the backplane for LC models See Section 8 1 for pin selection information To delay the motor until the drive receives a Start Unit comm...

Страница 32: ...26 Cheetah 15K 5 SCSI Product Manual Rev H Figure 1 Typical ST3300655LW drive 12V LVD current profile Figure 2 Typical ST3300655LW drive 5 V LVD current profile ...

Страница 33: ... I O rate for a drive in your system on the horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 3 ST3300655LC DC current and power vs IOPS LVD ST3300655LC CURRENT POWER vs THROUGHPUT SCSI LVD Random 8 Block Reads 0 000 0 200 0 400 0 600 0 800 1 000 1 200 1 400 1 600 1 800 0 0 50 0 ...

Страница 34: ...or a drive in your system on the horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 4 ST3146855LC DC current and power vs IOPS LVD ST3146855LC CURRENT POWER vs THROUGHPUT SCSI LVD Random 8 Block Reads 0 000 0 200 0 400 0 600 0 800 1 000 1 200 1 400 1 600 1 800 0 0 50 0 1 00 0 1 50...

Страница 35: ...or a drive in your system on the horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 5 ST373455LC DC current and power vs IOPS LVD ST373455LC CURRENT POWER vs THROUGHPUT SCSI LVD Random 8 Block Reads 0 000 0 200 0 400 0 600 0 800 1 000 1 200 1 400 1 600 1 800 0 0 50 0 1 00 0 1 50 0...

Страница 36: ...radient of 36 F 20 C per hour Air flow may be needed in the drive enclosure to keep within this range see Section 8 3 Operation at HDA case temperatures outside this range may adversely affect the drives ability to meet specifications To confirm that the required cooling for the electronics and HDA case is provided place the drive in its final mechanical configuration perform random write read ope...

Страница 37: ... at abnormal levels may promote degraded operational performance during the abnormal shock period Speci fied operational performance will continue when normal operating shock levels resume Shock may be applied in the X Y or Z axis Shock is not to be repeated more than two times per second c Non operating The limits of non operating shock shall apply to all conditions of handling and transportation...

Страница 38: ...ackaged in single or multipacks with a gross weight of 20 pounds 8 95 kg or less by Seagate for general freight shipment shall withstand a drop test from 48 inches 1 070 mm against a concrete floor or equivalent Figure 7 Recommended mounting Z Y X Z Y X ...

Страница 39: ... 2 00 G zero to peak Vibration may be applied in the X Y or Z axis Non operating translational random flat profile 10 500 Hz 1 2 gRMS 6 4 5 Air cleanliness The drive is designed to operate in a typical office environment with minimal environmental control 6 4 6 Corrosive environment Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to light indu...

Страница 40: ...Figures 8 and 9 for detailed mounting configuration dimensions See Section 8 4 Drive mounting Figure 8 LW mounting configuration dimensions Height max 1 028 in 26 11 mm Width max 4 010 in 101 85 mm Depth max 5 787 in 146 99 mm Weight max 1 85 pounds 0 839 kilograms J H L B S K 1 F 1 D E P Mounting holes are 6 32 UNC 2B three on each side and four on the bottom Max screw penetration into side of dr...

Страница 41: ...htening torque is 6 0 in lb 3 32 nm with minimum full thread engagement of 0 12 in 3 05 mm Notes 1 Inches A B C D E F H J K L M N P R S T U 26 10 147 00 101 60 95 25 3 18 44 45 28 50 101 60 6 35 41 60 4 60 1 02 41 28 66 50 7 00 0 38 0 38 1 028 5 787 4 000 3 750 125 1 750 1 122 4 000 250 1 638 181 040 1 625 2 618 276 015 015 max max 010 010 010 010 020 010 010 010 020 max max max max 25 25 25 25 50...

Страница 42: ...36 Cheetah 15K 5 SCSI Product Manual Rev H ...

Страница 43: ...ror recovery procedures after drive shipment are listed in the G list defects growth list The P and G lists may be referenced by the initiator using the Read Defect Data command see the SCSI Commands Reference Manual 7 2 Drive error recovery procedures Whenever an error occurs during drive operation the drive if programmed to do so performs error recovery procedures to attempt to recover the data ...

Страница 44: ... retry counts to a value below the default setting could result in an increased unrecovered error rate which may exceed the value given in this product manual A setting of zero 0 will result in the drive not performing error recovery For example suppose the Read Write Recovery page has the RC bit set to 0 read retry count set to 4 and the recovery time limit field Mode Sense page 01 bytes 10 and 1...

Страница 45: ...actured drive is performed as quickly as possible to verify the media and protect data by setting the Start time after idle to 5ms all subsequent scans begin after 500ms of idle time Other features that normally use idle time to function will function normally because BMS functions for bursts of 800ms and then suspends activity for 100ms to allow other background functions to operate BMS interrupt...

Страница 46: ... a write command to rewrite the data DAR is most effective when AWRE and ARRE are enabled this is the default setting from the Seagate factory With AWRE and ARRE disabled DAR is unable to reallocate the failing location and will report an error sense code indicating that a write command is being attempted to a previously failing location 7 7 Idle Read After Write Idle Read After Write IRAW utilize...

Страница 47: ...d of the SCSI bus cable The user system integra tor or host equipment manufacturer must provide external terminators Note For additional information about terminator requirements refer to Sections 9 8 and 9 9 Set all appropriate option jumpers for desired operation prior to power on If jumpers are changed after power has been applied recycle the drive power to make the new settings effective Insta...

Страница 48: ...5V Ground 4 Host Alternate Usage Plug Pins 1 3 5 and 7 are optional connections to switching circuits in host equipment to establish drive ID Remote Switches For ID selection use jumpers as shown or connect a cable for remote switching as shown below Dashed area is optional host circuitry external to the drive connected to host supplied optional usage plug 4 Reserved Pins 2 4 6 and 8 are normally ...

Страница 49: ... conform to SFF 8009 Revision 2 0 Unitized Connector for Cabled Drives signal assignments for auxiliary connectors 2 These signals are also on 80 pin J1 I O connector See tables 19 and 20 note 9 3 Voltage supplied by the drive 4 Dashed area is optional host circuitry external to the drive connected to host supplied optional usage plug 5 Do not connect anything to J5 pins 9 11 12 or J6 pins 13 20 6...

Страница 50: ...cted drive 1 starts after 12 second delay drive 2 starts after 24 second delay etc On On Drive spindle starts when Start Unit command received from host Delayed start feature is overridden and does not apply when ME jumper is installed WP On Entire drive is write protected Off Drive is not write protected Default is WP jumper not installed PD On Parity checking and parity error reporting by the dr...

Страница 51: ...ature measurement guidelines described in Sec tion 6 4 1 In some cases forced airflow may be required to keep temperatures at or below the temperatures specified in Section 6 4 1 If forced air is necessary possible air flow patterns are shown in Figure 12 The air flow patterns are created by fans either forcing or drawing air as shown in the illustrations Conduction convection or other forced air ...

Страница 52: ...3 5 inch to 5 25 inch adapter frame verify with Seagate Technology that the drive can meet the shock and vibration specifications while mounted in such an adapter frame Adapter frames that are available may not have a mechanical structure capable of mounting the drive so that it can meet the shock and vibration specifications listed in this manual 8 5 Grounding Signal ground PCBA and HDA ground ar...

Страница 53: ...r in the Seagate Parallel SCSI Interface Manual and the SCSI Commands Reference Manual 9 2 SCSI interface messages supported Table 7 lists the messages supported by the Cheetah 15K 5 SCSI family drives Table 7 SCSI messages supported by Cheetah 15K 5 SCSI family drives Message name Message code Supported Y yes N no Abort 06h Y Abort tag 0Dh Y Bus device reset 0Ch Y Clear ACA 16h N Clear queue 0Eh ...

Страница 54: ...sable 13h N Terminate I O process 11h N Wide data transfer request 1 Y Table 8 Commands supported by Cheetah 15K 5 SCSI family drive Command name Command code Supported by SCSI 2 3 Change Definition 40h N Compare 39h N Copy 18h N Copy and Verify 3Ah N Format Unit 1 04h Y DPRY bit supported N DCRT bit supported Y STPF bit supported Y IP bit supported Y DSP bit supported Y IMMED bit supported Y VS v...

Страница 55: ...everse Error Counter page 04h N Self test Results page 10h Y Start stop Cycle Counter page 0Eh Y Temperature page 0Dh Y Verify Error Counter page 05h Y Write error counter page 02h Y Mode Select same pages as Mode Sense 1Ah 15h Y 2 Mode Select 10 same pages as Mode Sense 1Ah 55h Y Mode Sense 1Ah Y 2 Caching Parameters page 08h Y Control Mode page 0Ah Y Disconnect Reconnect 02h Y Error Recovery pag...

Страница 56: ... Reassign Blocks 07h Y Receive Diagnostic Results 1Ch Y Supported Diagnostics pages 00h Y Translate page 40h Y Release 17h Y Release 10 57h Y Request Sense 03h Y Actual Retry Count bytes Y Extended Sense Y Field Pointer bytes Y Reserve 16h Y 3rd Party Reserve Y Extent Reservation N Reserve 10 56h Y 3rd Party Reserve Y Extent Reservation N Rezero Unit 01h Y Search Data Equal 31h N Search Data High ...

Страница 57: ...40h Y Set Limits 33h N Start Unit Stop Unit spindle ceases rotating 1Bh Y Synchronize Cache 35h Y Test Unit Ready 00h Y Verify 2Fh Y BYTCHK bit Y Write 0Ah Y Write and Verify 2Eh Y DPO bit Y Write Buffer modes 0 2 supported 3Bh Y Firmware Download option modes 5 7 Ah and Bh supported 3 Y Write Extended 2Ah Y DPO bit Y FUA bit Y Write Long 3Fh Y Write Same 41h Y PBdata N LBdata N XDRead 52h N XDWri...

Страница 58: ...lues of bytes 18 through 26 of you particular model ST3300655LW 33 33 30 30 36 35 35 4C 57 ST3300655LC 33 33 30 30 36 35 35 4C 43 ST3146855LW 33 31 35 36 38 35 35 4C 57 ST3146855LC 33 31 35 36 38 35 35 4C 43 ST373455LW 33 37 33 34 35 35 4C 57 20 ST373455LC 33 37 33 34 35 35 4C 43 20 4 Copyright Year the year the drive s firmware code was built 9 3 1 Inquiry Vital Product data Instead of the standa...

Страница 59: ...itled CHG These are hex numbers representing the changeable values for mode page 01 Note that bytes 04 05 06 and 07 are not changeable because those fields are all zeros If some changeable code had a hex value EF that equates to the binary pattern 1110 1111 If there is a zero in any bit position in the field it means that bit is not changeable Bits 7 6 5 3 2 1 and 0 are changeable because those bi...

Страница 60: ...0 00 00 00 00 00 3a a7 00 00 CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SAV 87 0a 00 0b ff 00 00 00 00 00 ff ff DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff SAV 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 0...

Страница 61: ...0 00 00 00 00 00 3a a7 00 00 CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SAV 87 0a 00 0b ff 00 00 00 00 00 ff ff DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff SAV 88 12 10 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 0...

Страница 62: ...0 00 00 00 00 00 3a a7 00 00 CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 SAV 87 0a 00 0b ff 00 00 00 00 00 ff ff DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff SAV 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 0...

Страница 63: ...ve Caching Y Arbitrating System Y Asynchronous Data Transfer N Asynchronous Event Notification Y Attention Condition N Auto Contingent Allegiance Condition Y Contingent Allegiance Condition Y Deferred Error Handling Y Disconnect Reconnect N High voltage differential HVD interface available Y Low voltage differential LVD interface available Y Parameter Rounding controlled by the Round bit in Mode S...

Страница 64: ...hronous ST DATA transfer periods 9 5 2 REQ ACK offset Cheetah 15K 5 SCSI family drives support REQ ACK offset values from 7 to 63 3Fh Offsets of 1 through 6 are negotiated to 0 asynchronous transfer 9 6 Physical interface This section describes the connectors cables signals terminators and bus timing of the DC and SCSI I O interface See Section 9 8 and Section 9 9 for additional terminator informa...

Страница 65: ...ed below but equiva lent parts may be used LC model drives receive power through the 80 pin I O connector See Tables 19 and 20 Figure 13 LW model drive physical interface 68 pin J1 SCSI I O connector Type of cable Connector Contacts 20 14 AWG 14 AWG MP 1 480424 0 AMP 60619 4 Loose Piece AMP 61117 4 Strip J5 Pin 1A 68 Pin SCSI I O Connector Pin 1P J1 DC Power J1 Pin 1 J1 DC Power Pin 1P 2P 3P 4P Po...

Страница 66: ...re common between all devices on the bus This bus must be terminated at both ends with the proper impedance in order to operate correctly Do not terminate intermediate SCSI devices In some cases the SCSI devices at each end have onboard termina tion circuits that can be enabled by installation of a jumper plug TE on the device These termination circuits receive power from either a source internal ...

Страница 67: ...ation If shielded and unshielded cables are mixed within the same SCSI bus the effect of impedance mismatch must be carefully considered Proper impedance matching is especially important in order to maintain adequate margin at FAST 20 FAST 40 FAST 80 and FAST 160 SCSI transfer rates Note For LVD operation twisted pair cables are recommended For LVD Fast 40 operation twisted pair cables are strongl...

Страница 68: ... user to attach an 80 pin cable connector should be allowed since the length of the DC power carrying conductors could not be controlled and therefore could become too long for safe power transmission to the drive Multiconnector 80 conductor cables should espe cially not be allowed since the power carrying conductors on the 80 conductor interface were not intended to support a series of drives To ...

Страница 69: ...cluding host adapter initiator The cable length restriction limits the total number of devices allowed 5 SCSI ID7 has highest arbitration priority then ID15 to ID8 ID 8 has the very lowest priority 6 Last drive on the daisy chain 7 Open end type 68 pin connector used If end device use external terminator and closed end type 68 pin connector Figure 15 SCSI daisy chain interface cabling for LW drive...

Страница 70: ...15 8 00 3 650 92 71 840 005 21 34 315 010 8 00 001 002dia 083 2 1 Trifurcated Pins 4 places 085 2 16 x 45 chamfer typ 20 5 08 typ 60 15 24 100 2 54 Pos 1 Pos 2 1 2 3 4 1 816 46 13 Position 1 Pos 68 Pos 35 1 650 41 91 980 24 89 1 368 37 74 767 19 48 050 1 27 218 5 54 Pos 1 022 050 020 047 0787 200 1 650 3937 600 346 3 650 005 270 155 ...

Страница 71: ... 12 70 500 2 15 0 10 2 places 57 87 0 2 2 278 008 Y 0 15 0059 M Y M 62 15 0 15 2 447 0 006 Housing X X Contact 0 3 012 M Y M 1 27 05 Typ C L of Datum Y C L of Datum Y 0 50 020 Pin 1 Pin 40 Pin 41 Pin 80 Pin 1 Front View End View Top View Back View Insert mating I O connector Grounding Pins Grounding Pins 0 15 0059 M Y M ...

Страница 72: ...9 10 39 DBP1 GND 6 11 12 40 DB0 GND 7 13 14 41 DB1 GND 8 15 16 42 DB2 GND 9 17 18 43 DB3 GND 10 19 20 44 DB4 GND 11 21 22 45 DB5 GND 12 23 24 46 DB6 GND 13 25 26 47 DB7 GND 14 27 28 48 DBP GND 15 29 30 49 GND GND 16 31 32 50 GND TermPwr 17 33 34 51 TermPwr TermPwr 18 35 36 52 TermPwr Reserved 19 37 38 53 Reserved GND 20 39 40 54 GND GND 21 41 42 55 ATN GND 22 43 44 56 GND GND 23 45 46 57 BSY GND 2...

Страница 73: ... 11 12 40 DB0 DB1 7 13 14 41 DB1 DB2 8 15 16 42 DB2 DB3 9 17 18 43 DB3 DB4 10 19 20 44 DB4 DB5 11 21 22 45 DB5 DB6 12 23 24 46 DB6 DB7 13 25 26 47 DB7 DBP 14 27 28 48 DBP Ground 15 29 30 49 Ground DIFFSNS 8 16 31 32 50 Ground TermPwr 17 33 34 51 TermPwr TermPwr 18 35 36 52 TermPwr Reserved 19 37 38 53 Reserved Ground 20 39 40 54 Ground ATN 21 41 42 55 ATN Ground 22 43 44 56 Ground BSY 23 45 46 57 ...

Страница 74: ...0 6 46 DIFFSNS 8 DB11 7 47 GND DB10 8 48 GND DB9 9 49 GND DB8 10 50 GND I O 11 51 GND REQ 12 52 GND C D 13 53 GND SEL 14 54 GND MSG 15 55 GND RST 16 56 GND ACK 17 57 GND BSY 18 58 GND ATN 19 59 GND DBP 20 60 GND DB7 21 61 GND DB6 22 62 GND DB5 23 63 GND DB4 24 64 GND DB3 25 65 GND DB2 26 66 GND DB1 27 67 GND DB0 28 68 GND DP1 29 69 GND DB15 30 70 GND DB14 31 71 GND DB13 32 72 GND DB12 33 73 GND 5 ...

Страница 75: ... DIFFSNS 8 DB11 7 47 DB11 DB10 8 48 DB10 DB9 9 49 DB9 DB8 10 50 DB8 I O 11 51 I O REQ 12 52 REQ C D 13 53 C D SEL 14 54 SEL MSG 15 55 MSG RST 16 56 RST ACK 17 57 ACK BSY 18 58 BSY ATN 19 59 ATN DBP 20 60 DBP0 DB7 21 61 DB7 DB6 22 62 DB6 DB5 23 63 DB5 DB4 24 64 DB4 DB3 25 65 DB3 DB2 26 66 DB2 DB1 27 67 DB1 DB0 28 68 DB0 DBP1 29 69 DP1 DB15 30 70 DB15 DB14 31 71 DB14 DB13 32 72 DB13 DB12 33 73 DB12 ...

Страница 76: ...ded open for the 1 setting grounded for the 0 setting Alternatively these pins may be driven by a 3 3V logic device pulled up to 3 3V through a pull up resistor recommended size of 10K ohm or grounded through some other means 9 7 Electrical description Cheetah 15K 5 SCSI drives are multimode devices That is their I O circuits can operate as either single ended or low voltage differential drivers r...

Страница 77: ...gin at fast SCSI transfer rates 9 7 1 2 Single ended drivers receivers The maximum total cable length allowed with drives using single ended I O driver and receiver circuits depends on several factors Table 21 lists the maximum lengths allowed for different configurations of drive usage These values are from the SPI documents All device I O lines must have equal to or less than 25 pf capacitance t...

Страница 78: ...osstalk and their lengths must be reduced as shown in Table 23 Table 22 Shielded round twisted pair cables into a multi drive backplane Cable description Differential impedance nominal Single ended impedance nominal Single ended capacitance maximum Time delay nominal Conductor DC resistance nominal Maximum shielded round twisted pair cable length for U160 U320 30 AWG solid 130 ohms 90 ohms 17 pF f...

Страница 79: ... O connector or on the end of a short I O cable stub extending past the last cable connector LC drives are designed to be plugged into a backpanel connector without cabling 9 9 Terminator power LW drives You can configure terminator power from the drive to the SCSI bus or have the host adaptor or other device supply terminator power to the external terminator See Section 8 1 for illustrations that...

Страница 80: ... 6 14 0 52 μs Disconnect to Arbitration for Reselect This measures disconnected CMD over head T11 4 5 6 Command Depen dent Target win Arbitration for Reselect T12 4 5 7 3 00 μs Arbitration to Reselect T13 4 5 7 1 60 μs Reselect to Identify MSG In T14 4 5 7 1 39 μs Reselect Identify MSG to Status T15 4 5 8 Command Depen dent Reselect Identify MSG to Data media T16 4 5 11 Command Depen dent Data to ...

Страница 81: ...ess Byte 7 of 10 T23 10 7 4 5 4 0 13 μs 1 μs Next CDB Byte Access Byte 8 of 10 T23 10 8 4 5 4 0 12 μs 1 μs Next CDB Byte Access Byte 9 of 10 T23 10 9 4 5 4 0 12 μs 1 μs Next CDB Byte Access Byte 10 of 10 T23 10 10 4 5 4 0 12 μs 1 μs Data In Byte Transfer parameter T24 4 5 12 0 04 μs Data Out Byte Transfer parameter T25 4 5 13 0 04 μs Next Data In Byte Access parameter T26 4 5 12 0 12 μs Next Data ...

Страница 82: ...he command Spun down No command activity Off Spun down Write Read Buffer On while processing the command Spun down SCSI Bus Reset On while processing the reset Spun down Test Unit Ready On while processing the command Spun up No command activity Off Spun up Write Read On while processing the command Spun up SCSI Bus Reset On while processing the reset Spun up Test Unit Ready On while processing th...

Страница 83: ...rs with product information program benefits and sales tools You may register for customized communications that are not available on the web These communications contain product launch EOL pricing promotions and other channel related information To learn more about the benefits or to register go to spp seagate com any time from anywhere in the world Seagate Service Centers Presales Support Our Pr...

Страница 84: ...vailable on a global basis for the return of defective products Contact your customer support representative for the location nearest you USA Canada Latin America support services For an extensive list of telephone numbers to technical support presales and warranty service in USA Canada Latin America including business hours go to the Contact Us page on www seagate com Global Customer Support Pres...

Страница 85: ...lity 7 bits inch 11 BMS 39 buffer 13 space 13 bulkhead connector 60 bus device reset message 53 bytes per sector 51 C cable 59 cache 13 cache buffer 9 cache mode 13 cache operation 13 cache segments 14 caching write data 14 Canadian Department of Communications 3 capacities 10 capacity drive programmable 10 CE Marking 4 changeable bit 53 changeable value 53 check condition 53 circuits 71 class B l...

Страница 86: ...e 4 EMI requirements 3 environmental control 33 environmental limits 30 environmental requirements 15 EPROM 53 error 15 management 37 error management system 39 error rate 15 error recovery 37 errors 37 ETF defect list 37 European Union requirements 4 EVPD bit 52 execution time 12 extended messages 48 F FCC rules and regulations 3 firmware 53 flat ribbon cable 70 flaw reallocation 12 format 51 for...

Страница 87: ...tion 34 mounting configuration dimensions 34 35 mounting constraints 15 46 mounting point 46 mounting surface 46 mounting surface distortion 46 mounting surface stiffness 46 MTBF 15 16 multiconnector 80 conductor 62 multimode drivers and receivers 8 multi segmented cache control 13 N noise 25 audible 3 non operating 30 31 33 temperature 30 non operating vibration 33 nonshielded 68 conductor connec...

Страница 88: ... SCSI Commands Reference Manual 5 SCSI I O connector 60 SCSI ID 41 44 SCSI interface 13 60 SCSI interface cable 61 SCSI interface commands supported 48 SCSI interface connector 58 SCSI interface data 12 SCSI Interface Product Manual 3 5 7 SCSI systems error 39 SCSI systems error management 39 Seagate support service 41 sector sizes 12 seek error 15 defined 16 Self Monitoring Analysis and Reporting...

Страница 89: ...etoresistive heads 7 U Ultra160 53 Ultra160 mode 48 Ultra160 SCSI interface 7 Ultra320 SCSI controller 8 unformatted 9 Unrecoverable Errors 15 V vibration 31 33 vital product data 52 volatile memory 53 voltage 23 24 W warranty 9 21 wet bulb temperature 30 wide Ultra160 SCSI interface 7 WP jumper 44 write protect 44 write retry count 37 Z zoned bit recording ZBR 8 ...

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Страница 92: ...Seagate Technology LLC 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 100384776 Rev H Printed in USA ...

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