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Barracuda 4LP Product Manual, Rev. D

51

9.4

SCSI bus conditions and miscellaneous features supported

Asynchronous SCSI bus conditions supported by the drive are listed below. These conditions cause the SCSI
device to perform certain actions and can alter the SCSI bus phase sequence. Other miscellaneous operating
features supported are also listed here. Refer to SCSI I/O Product manual P/N 77738479 for details.

Table 10:

SCSI bus conditions and other miscellaneous features

Condition/Feature Supported by:

SCSI-2/SCSI-3

Conditions or Feature

N

Adaptive Caching

Y

Adaptive Read Look-ahead

Y

Arbitrating System

Y

Asynchronous Data Transfer

N

Asynchronous Event Notification

Y

Attention Condition

Y

Capacity Programming

Y

Contingent Allegiance Condition

Y

Deferred Error Handling

Y

Differential Interface Circuits available

Y

Disconnect/Reconnect

Y

Flag and Link bits in Control Byte supported

Y

Format progress indication

Y

Immediate status on Format unit command

Y

Immediate status on Start/Stop command

Y

Immediate status on Synchronize cache

Y

Parameter Rounding

Y

Queue tagging (up to 64 Que tags supported)

Y

Reporting actual retry count in Extended Sense bytes 15, 16 and 17.

Y

Reset Condition

Y

Segmented Caching

N

Synchronized (locked) Spindle Operation

Y

Synchronous Data Transfer

N

Zero Latency Read

SCSI-2/SCSI-3

Status Supported

Y

Good

Y

Check Condition

N

Condition Met/Good

Y

Busy

Y

Intermediate/Good

N

Intermediate/Condition Met/Good

Y

Reservation Conflict

Y

Queue Full

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Содержание ST32171DC

Страница 1: ...Barracuda 4LP Family ST34371N W WD WC DC ST32171N W WD WC DC ST34571N W WD WC DC ST32271N W WD WC DC Product Manual Volume 1...

Страница 2: ......

Страница 3: ...Barracuda 4LP Family ST34371N W WD WC DC ST32171N W WD WC DC ST34571N W WD WC DC ST32271N W WD WC DC Product Manual Volume 1...

Страница 4: ...NE SeaNET SeaTDD and SeaBOARD are either trademarks or registered trademarks of Seagate Technology Inc or one of its subsidiaries All other trademarks or registered trademarks are the property of thei...

Страница 5: ...77738479 If the SCSI Interface information is needed the Volume 2 Interface Manual should be ordered part number 77738479 Revision Date Writer Engineer Sheets Affected Rev A 11 18 96 D Ashby B Norman...

Страница 6: ......

Страница 7: ...time minutes 10 4 2 3 Generalized performance characteristics 10 4 3 Start stop time 11 4 4 Prefetch multi segmented cache control 11 4 5 Cache operation 11 4 5 1 Caching write data 12 4 5 2 Prefetch...

Страница 8: ...requirements 41 9 1 General description 41 9 2 SCSI interface messages supported 41 9 3 SCSI interface commands supported 42 9 3 1 Inquiry Vital Product data 45 9 3 2 Mode Sense data 46 9 4 SCSI bus c...

Страница 9: ...WD J1 Auxiliary Pins 1A 12A 34 Figure 7d Barracuda 4LP family drive option select header for models N W and WD 35 Figure 7e Barracuda 4LP family drive option select header for models WC and DC 35 Figu...

Страница 10: ......

Страница 11: ...face specifications to the extent described in this manual The SCSI Inter face Product Manual part number 77738479 described general SCSI interface characteristics of this and other families of Seagat...

Страница 12: ......

Страница 13: ...rly packaged However it is the user s responsibility to assure that the drive meets the appropriate EMI requirements in their system Shielded I O cables may be required if the enclosure does not provi...

Страница 14: ...ace Manual Seagate P N 77738479 ANSI small computer system interface SCSI document numbers X3 131 1994 SCSI 2 X3T10 855D rev 15a SPI X3T10 1071D rev 6 Fast 20 also called Ultra SCSI SFF 8046 Specifica...

Страница 15: ...e supports the Small Computer System Interface SCSI as described in the ANSI SCSI 2 interface specifications to the extent described in this manual volume 1 which defines the product performance char...

Страница 16: ...ns no replaceable parts Opening the HDA voids your warranty Barracuda 4LP drives use a dedicated landing zone at the innermost radius of the media to eliminate the pos sibility of destroying or degrad...

Страница 17: ...led by jumpers N and W models only 512 K byte data buffer Hot plug compatibility section 9 6 4 3 lists proper host connector needed for WC and DC model drives SCAM SCSI Configured AutoMagically plug n...

Страница 18: ...block descriptor bytes 1 2 and 3 A value greater than the maximum number of LBAs is rounded down to the maximum capacity 3 7 Factory installed accessories OEM Standard drives are shipped with Installa...

Страница 19: ...7 GByte UNF rounded off values Read Write Heads 10 5 10 5 Bytes Track 102 500 102 500 106 980 106 980 Bytes Avg rounded off values Bytes Surface 531 531 554 554 Mbytes UNF rounded off values Tracks Su...

Страница 20: ...odels Sector Sizes Default 512 byte user data blocks Variable 180 to 4 096 bytes per sector in even number of bytes per sector If n number of bytes per sector is odd then n 1 will be used Notes listed...

Страница 21: ...SCSI Interface Product Manual 77738479 There is no power control switch on the drive 4 4 Prefetch multi segmented cache control The drive provides prefetch read look ahead and multi segmented cache co...

Страница 22: ...e responds as it does for any attempt to change unchangeable parameters see SCSI I O Product Manual 77738479 The drive supports operation of any integer number of segments from 1 to 16 4 5 1 Caching w...

Страница 23: ...re interleave ARLA enables prefetch of contiguous blocks from the disc when it senses that a prefetch hit will likely occur even if two consecutive read operations were not for physically contiguous b...

Страница 24: ......

Страница 25: ...t capable of being detected from the error or fault status provided through the drive or SCSI interface or Is not capable of being recovered by normal drive or system recovery procedures without opera...

Страница 26: ...ance The following expression defines MTBF Estimated power on operating hours in the period MTBF per measurement period Number of drive failures in the period Estimated power on operation hours means...

Страница 27: ...least 1 millisecond after disconnecting the device from the bus c You may simultaneously switch the power to the electronics and mechanics of the drive with the bus contacts if the power distribution...

Страница 28: ...nd return information Seagate customer service centers are the only facilities authorized to service Seagate drives Seagate does not sanction any third party repair facilities Any unauthorized repair...

Страница 29: ...fied voltage tolerance is inclusive of ripple noise and transient response 6 Operating condition is defined as random seek read operations with a block count of 64 and SCSI discon nect enabled 7 Gener...

Страница 30: ...able the Enable Motor Start option on the J2 connector 6 2 3 12 V Current profile Figure 3 identifies the drive 5 V and 12 V current profile The current during the various times is as shown Note All t...

Страница 31: ...l excursions to drive ambient tem peratures of 122 F 50 C or 41 F 5 C may occur without impact to specified MTBF To achieve the speci fied MTBF the values of Table 3 column 2 must be considered maximu...

Страница 32: ...occurs a Operating 5 to 90 relative humidity with a maximum gradient of 10 per hour b Non Operating 5 to 95 relative humidity Model N PCB HDA Temp Check Point J1 Bottom side of PCB U8 U6 U17 U6 U6 U1...

Страница 33: ...a maximum duration of 11 ms half sinewave Shock occurring at abnor mal levels may promote degraded operational performance during the abnormal shock period Specified operational performance will cont...

Страница 34: ...al Rev D Note Use four screws two per side when using the mounting holes located on the sides of the drive See Section 8 4 when using the mounting holes located on the bottom of the drive Figure 5 Rec...

Страница 35: ...tions of handling and transportation This includes both isolated drives and integrated drives The drive shall not incur physical damage or degraded performance as a result of continuous vibration not...

Страница 36: ...000 0 19 0 015 0 143 0 260 0 030 0 386 2 265 2 075 010 010 021 009 010 020 010 010 005 010 010 020 010 010 010 max 25 25 53 22 25 50 25 25 12 25 25 50 25 25 25 max Dimension Table Millimeters Mounting...

Страница 37: ...Mounting holes three on each side 6 32 UNC Max screw length into side of drive 0 15 in 3 81 mm Screw tightening torque 6 0 in lb 675 NM max with minimum thread engagement of 0 12 in 3 05 mm Mounting h...

Страница 38: ...holes four on bottom 6 32 UNC Max screw length into bottom of drive 0 15 in 3 81 mm Screw tightening torque 6 0 in lb 675 NM max with minimum thread engagement of 0 12 in 3 05 mm Interface connector i...

Страница 39: ...ctory See Section 5 2 1 2 Format Unit command in SCSI Interface Product Manual part number 77738479 Data correction by ECC will be applied to recover data from additional flaws if they occur Details o...

Страница 40: ......

Страница 41: ...e 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 h...

Страница 42: ...SCSI ID 4 SCSI ID 5 SCSI ID 6 SCSI ID 7 L E D R E S R E S Reserved Pin 1 Shipped with cover installed Do not install jumpers retain cover 11 9 7 5 3 1 Drive Activity LED Ground 4 6 Optional connectio...

Страница 43: ...ve Activity LED 4 6 8 Dashed area is optional host circuitry external to the drive connected to host supplied optional usage plug Do not connect anything to pins 13 20 5V Host Alternate Usage Plug Res...

Страница 44: ...wnward 2 Pin 1 PCB Pin 12A 1P 2P 3P 4P 5V Ground 4 6 7 Host Alternate Usage Plug Pins 1 3 5 and 7 are optional connections to switching circuits in host equipment to establish drive ID 4 Remote Switch...

Страница 45: ...only Pin 1 J2 J2 Jumper Plug enlarged to show detail 3 Caution Do not use J2 jumper plugs on J6 or J1 Auxiliary as the internal contacts will be deformed and can not be used on J2 without them falling...

Страница 46: ...eage Do not install any jumpers 4 Table 4 summarizes the configuration selection possibilities available on the different Barracuda 4LP model drives 5 These signals are also on 80 pin J1 See Table 13d...

Страница 47: ...ns 1 3 5 and 7 for 250 ms after power on or drive reset Jumper plugs can be used on J1 Auxiliary pins 1 2 3 4 5 6 and 7 8 to set drive ID if desired but usually a connector cable is plugged to J1 Auxi...

Страница 48: ...ity checking and parity error reporting by the drive is disabled Off Drive checks for parity and reports result of parity checking to host Default is PD jumper not installed RES Applies to all models...

Страница 49: ...using the temperature measurement guidelines described in Section 6 4 1 Forced air flow may be required to keep temperatures at or below the specified case temperatures of Table 3 Column 2 in which ca...

Страница 50: ...inch adapter frame verify with Seagate Tech nology that the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame Adapter frames that are available...

Страница 51: ...479 SCSI Interface Product Manual 2 Not applicable to N models Table 5 SCSI messages supported by Barracuda 4LP family drives Message Name Message Code Supported by SCSI 2 3 Abort 06h Y Abort tag 0Dh...

Страница 52: ...index Y Physical sector format 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 vendor specific N Inquiry 12h Y Date co...

Страница 53: ...ty 25h Y Read defect data 37h Y Read extended 28h Y DPO bit supported Y FUA bit supported Y Read long 3Eh Y Reassign blocks 07h Y Rebuild 81h N Receive diagnostic results 1Ch Y Supported diagnostics p...

Страница 54: ...e 40h Y Set limits 33h N Start unit stop unit spindle ceases rotating 1CH 1Bh Y Synchronize cache 35h Y Test unit ready 00h Y Verify 2Fh Y DPO bit supported Y BYTCHK bit supported Y Write 0Ah Y Write...

Страница 55: ...wide data bus drives and that is the only fact the host needs to discover from byte 23 5 Copyright Year changes with actual year 6 For N models this value is 00 For models W WD WC and DC this value i...

Страница 56: ...tes which of the Current values and Saved values can be changed by a Mode Select command A one allows a change to a corresponding bit a zero allows no change For example in Table 8a refer to Mode page...

Страница 57: ...0 87 00 00 00 03 SAV 83 16 00 50 00 50 00 00 00 00 00 A5 02 00 00 01 00 3C 00 5A 40 00 00 00 03 DEF 83 16 00 50 00 50 00 00 00 00 00 A5 02 00 00 01 00 3C 00 5A 40 00 00 00 03 CHG 83 16 00 00 FF FF 00...

Страница 58: ...00 00 FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 SAV 84 16 00 14 30 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 3C 00 00 04 DEF 84 16 00 14 30 05 00 00 00 00 00 00 00 00 00 00...

Страница 59: ...FF FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 SAV 84 16 00 14 30 0A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 3C 00 00 04 DEF 84 16 00 14 30 0A 00 00 00 00 00 00 00 00 00 00...

Страница 60: ...00 00 FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 SAV 84 16 00 14 30 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 3C 00 00 04 DEF 84 16 00 14 30 05 00 00 00 00 00 00 00 00 00 00...

Страница 61: ...Asynchronous Event Notification Y Attention Condition Y Capacity Programming Y Contingent Allegiance Condition Y Deferred Error Handling Y Differential Interface Circuits available Y Disconnect Reconn...

Страница 62: ...lect and option select headers Details of the physical electrical and logical characteristics are given in sections following while the SCSI operational aspects of Seagate drive interfaces are given i...

Страница 63: ...Barracuda 4LP Product Manual Rev D 53 Figure 9a Physical interface for N model drives J1 4 3 2 1 Pin 1P 2P 3P 4P Power 12V 12V ret 5V ret 5V Pin 1 SCSI I O Connector Pin 1 DC Power Connector J6 J1 J2...

Страница 64: ...er pin assignments Figure 9c Model WC and DC drive physical interface 80 pin J1 SCSI I O connector and DC power connector J1 Auxiliary Pin 1A 68 Pin SCSI I O Connector Pin 1P J1 DC Power J6 J1 Pin 1 J...

Страница 65: ...a host 80 pin I O connector is not recom mended 9 6 3 SCSI Interface Cable requirements In general cables having the characteristic impedances given in Section 9 6 3 1 are not available however impeda...

Страница 66: ...than 0 2 meter 0 66 foot is allowed off the mainline interconnection with any connected equipment The stub length is measured from the transceiver to the con nection to the mainline SCSI bus The spaci...

Страница 67: ...strictly designed according to proper power transmission design concepts No possibility for the equipment user to attach an 80 pin cable connector should be allowed since the length of the DC power c...

Страница 68: ...ID0 has lowest for N models For W models priority is ID7 to ID0 then ID15 to ID8 ID 8 very lowest 6 Last drive on the daisy chain 7 Open end type 68 pin connector used Terminators disabled on WD model...

Страница 69: ...f A 010 834 010 21 18 Min Typ 3 051 1 30 16 4 06 100 2 54 025 64 Sq Contact 50 Places C L 040 1 02 Ref 335 010 8 50 001 002 Dia 083 2 1 Trifurcated Pin 4 places 26 6 60 Typ 065 1 65 x 45 Chamfer Typ 2...

Страница 70: ...15 8 00 3 650 92 71 840 005 21 34 315 010 8 00 001 002 dia 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 P...

Страница 71: ...6 12 70 500 57 87 0 20 2 278 0 008 51 17 0 10 2 251 0 004 Y 62 15 2 447 0 15 006 Housing Contact 0 3 012 M Y M 0 15 006 M Y M 0 15 006 M Y M 1 27 05 Typ C L of Datum Y C L of Datum Y 0 50 020 Pin 1 Pi...

Страница 72: ...Connector contact number 12 Cable conductor number 11 Connector contact number 12 Signal name 1 GND 1 1 2 2 DB0 GND 3 3 4 4 DB1 GND 5 5 6 6 DB2 GND 7 7 8 8 DB3 GND 9 9 10 10 DB4 GND 11 11 12 12 DB5 GN...

Страница 73: ...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 1...

Страница 74: ...DB14 DB15 4 7 8 38 DB15 DBP1 5 9 10 39 DBP1 GND 6 11 12 40 GND DB0 7 13 14 41 DB0 DB1 8 15 16 42 DB1 DB2 9 17 18 43 DB2 DB3 10 19 20 44 DB3 DB4 11 21 22 45 DB4 DB5 12 23 24 46 DB5 DB6 13 25 26 47 DB6...

Страница 75: ...10 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...

Страница 76: ...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 DBP DB7 21 61...

Страница 77: ...SCSI bus ID in drive 8 GND provides a means for differential devices to detect the presence of a single ended device on the bus 9 Signals 4 through 7 are used in place of installing jumpers and cables...

Страница 78: ...7 1 Single ended drivers receivers For N W and WC models which use single ended drivers and receivers typical circuits are shown in Fig ure 12 Terminator circuits Note 1 are to be enabled only when t...

Страница 79: ...ector Low level output voltage 2 0 V maximum at Low level output current 55 milliamps High level output voltage 3 0 V minimum at High level output current 55 milliamps Differential voltage 1 0 V minim...

Страница 80: ...er As a help drive 5 V power is made available on SCSI bus N W and WD models for powering external terminators if the drive option select header jumper TP Figure 7d is installed in rightmost posi tion...

Страница 81: ...user systems integrator or host equipment manufacturer must provide a terminator arrangement external to the drive For WD models terminator modules can be purchased that plug between the SCSI I O cabl...

Страница 82: ...ndent Reselect Identify MSG to Data media T16 4 5 11 Command Dependent Data to Status T17 4 5 15 Command Dependent Status to Command Complete MSG T18 4 5 5 8 15 0 98 s Command Complete MSG to Bus Free...

Страница 83: ...Byte 3 of Power Control Page set to 2 Data In Byte Transfer parameter T24 4 5 12 0 04 s Data Out Byte Transfer parameter T25 4 5 13 0 04 s Next Data In Byte Access parameter T26 4 5 12 0 12 s Next Da...

Страница 84: ......

Страница 85: ...com You can also send E mail with your questions to DiscSupport Seagate com or TapeSupport Seagate com Seagate CompuServe forum Online technical support for Seagate products is available on CompuServe...

Страница 86: ...683 Location Phone number Australia 61 2 9725 3366 9 00 A M to 5 00 P M Eastern time M F France 33 1 41 86 10 86 9 30 A M to 12 30 P M 2 00 P M to 5 00 P M M F Germany Disc 49 89 140 9332 Tape 49 89 1...

Страница 87: ...fer 11 12 buffer segment 11 12 buffer segmentation 12 buffer full 11 buffer full ratio 11 bulkhead connector 55 bus device reset message 46 bytes per sector 44 bytes surface 9 bytes track 9 C cabinet...

Страница 88: ...vity 67 drive activity LED 37 drive capacity 9 programmable 8 drive configuration 37 drive default mode parameter 31 drive defects list track 29 drive failure 16 drive firmware 46 drive ID 31 37 drive...

Страница 89: ...onnector 37 55 I O line 38 I O termination 71 identified defect 29 idle condition 21 impedance match mismatch 55 initiator termination 71 inquiry command 45 inquiry vital product data 45 installation...

Страница 90: ...per 31 option jumper location 31 option select header 52 option select jumper 31 options 8 orientation 11 23 39 out of plane deflection 40 out of plane distortion 40 output voltage 68 overhead time 10...

Страница 91: ...cable 55 SCSI interface commands supported 42 SCSI interface connector 52 SCSI interface data 10 SCSI Interface Product Manual 3 4 5 SCSI systems error 29 SCSI systems error consideration 29 SCSI syst...

Страница 92: ...nitiator 71 terminator 31 38 58 68 active 71 passive 71 terminator circuit 38 68 terminator enable jumper TE 31 55 58 71 terminator power 38 62 71 source selection jumper TP 55 71 terminator requireme...

Страница 93: ......

Страница 94: ...Seagate Technology Inc 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 77767491 Rev D Printed in USA...

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