Seagate MEDALIST 1080SL Manuel

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .Medalist 1080sl . . . . . . . . . . . . . . . . . . . . . . . . . .

C.6.3 Caching page descriptionThe Caching page is shown below. This table summarizes the function,the default value and the changeability of each bit.

Byte 2 The initiator control (IC) bit is not supported.When the abort prefetch (ABPF) bit is 0, the drive controlscompletion of prefetch. Se

Bytes 8–9 The maximum prefetch field specifies the maximum num-ber of blocks the drive prefetches during a Read com-mand if there are no other c

C.7 Control Mode page (0AH)The Control Mode page is shown below. This table summarizes thefunction, the default value and the changeability of each

When the disable queuing (DQue) bit is zero, taggedcommand queuing is enabled. When the DQue bit is one,tagged command queuing is disabled.Byte

C.8 Notch page (0CH)The Notch page contains parameters that describe the notches. Thetable below summarizes the function, default value and the change

Byte 3 ReservedBytes 4–5 The maximum number of notches field indicates the maxi-mum number of notches supported by the drive. Bytes 6–7 The active not

C.9 Cache Control page (38H)The Cache Control page is shown below. This table summarizes thefunction, the default value and the changeability of each

Byte 5 The maximum prefetch multiplier field always contains thesame value as byte 9 of the Caching page, which is de-scribed in Appendix C.6.3. The i

When the remote S/S bit is 0, the drive spins up after a delayspecified by the spinup delay field (byte 4 of the Operatingpage, 00H). When the remote

IntroductionThis manual describes the functional, mechanical and interface specifi-cations for the Medalist 1080sl SCSI hard disc drive. The Medalist

ory data and the write counter are updated even after thewrite life span is exceeded, but the integrity of the datacannot be assured.When the synch

Appendix D. Inquiry dataWhen the initiator issues an Inquiry command, the drive returns eitherinquiry data or vital product data, depending on the val

Byte 0 The peripheral qualifier field contains a zero, which meansthat the drive is currently connected to the logical unit thatis issuing the Inquiry

Byte 7 The RelAdr bit is zero, which means that the drive does notsupport the relative addressing mode.The WBUS32 bit is zero, which means that the dr

D.2 Vital product data pagesWhen the initiator issues an Inquiry command, and the EVPD bit in byte 1of the Inquiry command descriptor block is 1,

D.2.1 Unit Serial Number page (80H)The Unit Serial Number page is shown below. The table summarizes thefunction and the default value of each bit.Byte

Byte 5 The SAVIMP bit is always zero; therefore, the currentoperating definition parameter cannot be saved. If theSAVIMP bit is one, th

D.2.4 Date Code page (C1H)The Date Code page is shown below. The table summarizes the functionand the default value of each bit.BytesBits7 6 5 4 3 2 1

Appendix E. Timing diagramsDescription Symbol Typical MaxTarget select time (without arbitration)T00 <80 µsec <250 msecTarget select time

Quick specification chartThe following table serves as a quick reference for the ST51080Nperformance specifications. These and other sp

Description Symbol Typical MaxTarget select time (without arbitration)T00 <1.0 µsec <250 µsecTarget select time (with arbitration)T01 &

Description Symbol TypicalIdentify message to command T04 <150 µsecATN–SEL–BUSY–I/O–MSG–C/D–REQ–ACK–T0410DB(7–0,P)–1010101010101010Identif

Description Symbol Typical MaxCommand byte transfer T22 <0.08 µsec 0.15 µsecNext command byte access *T23 <6.5 µsec 1.0 µsec* T23 is used, e

Description Symbol Typical MaxCommand to status T05 Command-dependentStatus to command complete messageT18 <150 µsec —Command complete message

Description Symbol Typical MaxCommand to disconnect messageT09 Command-dependentDisconnect message to bus free T10 <100 µsec —Disconnect to arbi

Description Symbol Typical MaxTarget wins arbitration (for reselect)T12 <6 µsec —Arbitration to reselect T13 <5 µsec —Reselect to identify m

Description Symbol Typical MaxReselect identify message to statusT15 <150 µsec —Status to command complete messageT18 <150 µsec —Command c

Description Symbol Typical MaxCommand to data in or parameter inT06 Command-dependent10DB(7–0,P)–ATN–SEL–BUSY–MSG–C/D–REQ–ACK–T06I/O–Last byte101

Description Symbol Typical MaxCommand to data out or parameter outT07 Command-dependentCommand to data (write to data buffer)T08 <500 µsec

Description Symbol Typical MaxReselect identify message to data (media)T16 Command-dependentDB(0–7,P)–ATN–SEL–BUSY–I/O–MSG–C/D–REQ–ACK–T1610First

Drive specification ST51080NSpinup current: +12V (max) 1.32ASeek power (typical) 7.11WRead/Write power (typical) 5.14WIdle power (typical) 4.9WVoltage

Description Symbol Typical MaxData in block transfer (ASYNC) T24 <0.1 µsec 0.2 µsecNext data in byte access (ASYNC)T26 <0.8 µsec 1.5 µsecData

Description Symbol Typical MaxData out block transfer (ASYNC) T25 <0.1 µsec 0.2 µsecNext data out byte access (ASYNC)T27 <0.8 µsec 1.5 µsecDa

Description Symbol Typical MaxDisconnect message to bus freeT10 <100 µsec —Data to save data pointer messageT20 <175 µsec —Save data poi

Description Symbol Typical MaxData to status T17 Command-dependentStatus to command complete messageT18 <150 µsec —Command complete message t

Description Symbol MinI/O low to data bus enableT1 400 nsecData bus valid to REQ– low T2 57.5 nsecREQ– assertion period T3 30.0 nsecREQ– deassertion p

Description Symbol Min MaxI/O high to data bus disable T1 — 50 nsecREQ– assertion period T2 30.0 nsec —REQ– deassertion period T3 30.0 nsec —Data vali

1.0 Specifications summary1.1 Formatted capacityThe capacities specified here do not include spare sectors and cylinders.The media contains one spare

Seagate Technology, Inc.920 Disc Drive, Scotts Valley, California 95066, USAPublication Number: 36321-101, August 1995, Printed in USA

1.4 Physical dimensionsHeight (max) 0.748 inches (19 mm)Width (max) 4.00 inches (102.1 mm)Depth (max) 5.00 inches (127.0 mm)Weight (max) 0.75 lb (340.

1.6 Start and stop timeIf the motor start option is disabled, the drive becomes ready within20 seconds after power is applied. If the motor start o

5. The drive begins to lock in speed-control circuits.6. The actuator lock releases the actuator.7. The spindle motor reaches operating speed in about

• Seeking. The servo electronics are active, and the heads are movingto a specific location on the disc. The read/write electronics arepower

1.7.3 Input noise+5V +12VVoltage tolerance(including noise)± 5% ± 5% Input noise frequency(max)25 MHz 25 MHzInput noise(max, peak-to-peak)100 mV 240 m

1.8.4 Relative humidityOperating 8% to 80% noncondensingMaximum wet bulb 29.4°C (84.9°F)Operating gradient, max 10% per hourNonoperating 5% to 95% non

1.11 ReliabilityRead error rates are measured with automatic retries and data correctionwith ECC enabled and all flaws reallocated. MTBF is m

equipment does cause interference to radio or television, which can bedetermined by turning the equipment on and off, you are encouraged totry one or

5. Alle Arbeiten auf dem Festplatte dürfen nur von Ausgebildetem Serv-icepersonal durchgeführt werden. Bitte schaffen Sie Festplatteetiket-ten nicht w

2.0 Hardware and interfaceThe ST51080N drive uses a SCSI-2 interface that consists of a 9-bitbidirectional bus (8 data bits and 1 parity bit) and 9 co

• Always rest the drive on a padded, antistatic surface until you mountit in the host system.• Do not touch the connector pins or the printed circuit

2.4 SCSI interface connectorThe ST51080N uses a standard 50-pin, nonshielded, keyed connector.The connector consists of two rows of 25 male contacts 0

Part numbers for mating Molex connectors compatible with the drive arelisted below. These connectors have a center key. Closed end(for cable ends)Mole

Signal name Signalpin numberGroundpin numberATN– 32 31Ground 33–34 —BSY– 36 35ACK– 38 37RST– 40 39MSG– 42 41SEL– 44 43C/D– 46 45REQ– 48 47I/O– 50 49Ca

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .Medalist 1080sl. . . . . . . . . . . . . . . . . . . . . . . . . . .

SCSI ID 0SCSI ID 1SCSI ID 2SCSI ID 3SCSI ID 4SCSI ID 5Note.1. All other pins are reserved. Do not use them.2. Jumpers on pins 28 and 30 and 32 and

To minimize noise, use 28 AWG or larger 50-conductor flat cable or25-conductor twisted-pair ribbon cable. The following are part numbersfor nonshield

The jumper block accepts 2-mm jumpers. Spare jumpers are includedwith the drive attached to the pins shown in Figure 4 on page 20. If youneed addition

connector only, install a jumper on pins 22 and 24 of the options jumperblock.2.6.4 Parity enable optionParity is enabled when a jumper is installed o

• All I/O transactions are complete before you install or remove a drive.To avoid damage to the disc and head, the spindle must be completelystopped a

All dimensions are shown in both inches and millimeters. Millimeters areshown in parentheses.5.000 +0.000 −0.020 (127.000 +0.000 −0.508)1.985 ± 0.020

3.0 Command setThe drive supports a subset of the Group 0 and Group 1 standard SCSIcommands. The commands are described in this section.3.1 Command d

18HReservation conflict status. A SCSI device tried to access thedrive, but was unable to because the drive was already reservedby another SCSI device

3.3 Supported commandsThe drive supports the commands listed below.Group 0 commands Operation codeTest Unit Ready 00HRezero Unit 01HRequest Sense 03HF

© 1995 Seagate Technology, Inc. All rights reservedPublication Number: 36321-101, Rev. A, August 1995Seagate, Seagate Technology and the Seagate

3.4 Group 0 commands3.4.1 Test Unit Ready command (00H)The Test Unit Ready command verifies that the drive is ready; it is not arequest for a self-

The sense data applies to the previous command on which a checkcondition status was returned. This sense data is saved for the initiatoruntil:• The in

3.4.4 Format Unit command (04H)The Format Unit command assures that the medium is formatted so thatall of the addressable data blocks can be accessed

3.4.4.1 Defect listsWhen the Format Unit command is issued, media defect information canbe gathered from several sources. Four of these source

Byte 1 of CDBDescriptionBit 4 Bit 3 Bit 2–Bit 0FmtDataCmpLstDefect ListFormat0 0 X X XDefault format. The initiator does notsend the defect list heade

Byte 1 of CDBDescriptionBit 4 Bit 3 Bit 2–Bit 0FmtDataCmpLstDefect ListFormat1 1 1 0 1Format option with DList only. The driveerases any previous GLis

Bytes 2–3 The defect list length is the length, in bytes, of the defect listthat follows the header. For each sector to be reallocated,the defect list

A defect sector number of FFFFFFFFH (which means reassign the entiretrack) is illegal.Note. The initiator cannot use any previously defined C, G or D

If the drive does not have enough spare sectors to reassign all of thedefective logical blocks, the command terminates with a check conditionstatus, a

3.4.6 Read command (08H)When the drive receives the Read command, it transfers data to theinitiator. The Error Recovery page (01H) determines how the

ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Quick specification chart . . . . .

3.4.7 Write command (0AH)When the drive receives the Write command, it writes the initiator’s datato the disc. The Error Recovery page (01H) determine

3.4.8 Seek command (0BH)When the drive receives the Seek command, it seeks to the track of thespecified logical block address. This command is seldom

The initiator should allocate 36H bytes for inquiry data. The inquiry datareturned to the initiator is summarized in Appendix D. BytesBits7 6 5 4 3 2

changeable. The changeability values for each bit of each mode pageare listed in Appendix C with the default values.• Default values copy. This copy c

Byte 1 The page format (PF) bit is always one. This means that the datasent by the initiator after the mode select header and blockdescriptors

Byte 1 The medium type field is always 00H, which means that thedrive is a direct-access device.Byte 3 If the block descriptor length is 8 bytes, a bl

initiator. The SCSI ID of the third-party initiator is specified in the3rd party device ID field. The extent bit must always be 0. The drive does not

3.4.13 Mode Sense command (1AH)When the initiator sends this command to the drive, it returns mode-pageparameters to the initiator. This command is us

3.4.13.1 Page code and allocation lengthThe Mode Sense command descriptor block contains a page code(byte 2, bits 5–0) and an allocation leng

PagecodeAllocationlengthMode Sense data returned0CH24H4 bytes of Mode Sense header8 bytes of block descriptor2 bytes of mode-page header22 bytes

2.0 Hardware and interface . . . . . . . . . . . . . . . . . . . . 152.1 SCSI-2 compatibility . . . . . . . . . . . .

Byte 0 The Mode Sense data length specifies the number ofbytes minus 1 of the Mode Sense data to be transferredto the initiator.Byte 1 The medium

3.4.15 Receive Diagnostic Results command (1CH)When the drive receives the Receive Diagnostics command after power-up or after a Send Diagnostic

Byte 7 The vendor-unique error codes are listed in Section3.4.15.2.3.4.15.2 Diagnostic error codesThe following diagnostic error codes are

If the PF bit is set to 1, SelfTest, device off line (DevOfl) andunit off line (UnitOfl) are ignored and a diagnostic page issent as the parameter lis

of the last logical block address, after which a substantialdelay (approximately 1 msec) in data transfer occurs. Thislogical block address must be gr

BytesBits7 6 5 4 3 2 1 00 0 0 1 0 1 0 0 01 LUN DPO FUA 0 0 02–5 Logical block address6 0 0 0 0 0 0 0 07–8 Transfer length9 0 0 0 0 0 0 0 0Byte 1 If th

If there is a reservation access conflict, this command terminates with areservation conflict status and no data is written. For more informationabout

3.5.4 Seek Extended command (2BH)The Seek Extended command requests that the drive seek to thespecified logical block address. This command

Bytes 2–5 The logical block address field specifies the logical blockwhere the drive begins writing and verifying the data. Bytes 7–8 The transfer len

This command can be used in conjunction with the Format Unit com-mand. Read Defect Data reads the defect lists off the reserved cylindersor flash memo

3.4.8 Seek command (0BH) . . . . . . . . . . . . . . . . . . 413.4.9 Inquiry command (12H) . . . . . . . . . . . . .

3.5.7.1 Defect list headerThe defect data always begins with a 4-byte header, followed by a 8-bytedescriptor for each defect. The defect list header f

BytesBits7 6 5 4 3 2 1 00 0 0 1 1 1 0 1 11 LUN 0 0 Mode2 Buffer ID (00H)3–5 Buffer offset6–8 Parameter list length9 0 0 0 0 0 0 0 0Byte 1 If the mode

3.5.9 Read Data Buffer command (3CH)The Read Data Buffer command supports several different features.The Read Data Buffer command can be used along wi

3.5.9.1 Read Buffer HeaderThe following table shows the structure of the 4-byte Read Buffer Header.BytesBits7 6 5 4 3 2 1 00 01–3 Buffer capacityBytes

BytesBits7 6 5 4 3 2 1 00 0 0 1 1 1 1 1 11 LUN 0 0 0 0 02–5 Logical block address6 0 0 0 0 0 0 0 07–8 Byte transfer length9 0 0 0 0 0 0 0 0Bytes 2–5 T

3.8 Group 7 commands Group 7 commands are 10-byte commands. These commands are notimplemented. If the drive receives one of these commands, it returns

Appendix A. Supported messagesA.1 Single-byte messagesThe implemented single-byte messages are listed below.Code Message name DirectionMustnegate ATN

This exchange of messages establishes the minimum transfer period andthe maximum allowed REQ/ACK offset.BytesBits7 6 5 4 3 2 1 00 Extended message (01

Appendix B. Sense dataThe appendix contains the descriptions for sense data returned by theRequest Sense command. For more information on the Request

Appendix C. Mode pages . . . . . . . . . . . . . . . . . . . . . 77C.1 Error Recovery page (01H) . . . . . . . . . .

Byte 2 If the incorrect length indicator (ILI) bit is zero, the re-quested block of data from the previous command did notmatch the logical block le

Sense key Description2HNot ready. The addressed logical unit cannot beaccessed. Operator intervention may be required tocorrect this condition.3HMediu

B.3 Additional sense code and additional sense codequalifierThe additional sense code and additional sense code qualifiers returnedin byte 12 and byte

Error code (hex)DescriptionByte 12 Byte 131B 00A synchronous transfer error occurred.1C 00The defect list could not be found.1C 01The primary defect l

Error code (hex)DescriptionByte 12 Byte 1332 00No spare defect locations available duringformat.32 01GList update full or error during reassign.37 00A

Error code (hex)DescriptionByte 12 Byte 1345 00An error occurred during a selection or areselection.47 00A SCSI interface bus parity error occurred.48

Appendix C. Mode pagesMode pages are groups of parameters stored by the drive. Theseparameters can be read using the Mode Sense command and

• An “X” means that the value of the bit cannot be specified. Forexample, the default value of bit 0 of byte 1 of page 00H (the Operatingp

C.1 Error Recovery page (01H)The Error Recovery page is shown below. This table summarizes thefunction, the default value and the changeability of eac

FiguresFigure 1. Typical startup current profile . . . . . . . . . . . . . . . . 6Figure 2. Single-ended transmitter and receiver .

When the automatic read reallocation enabled (ARRE) bit is 1,the drive automatically reallocates bad blocks detected whilereading from the disc. When

C.2 Disconnect/Reconnect page (02H)The Disconnect/Reconnect page is shown below. This table summarizesthe function, the default value and the changeab

Bytes 6–7 The disconnect time limit field indicates the minimumtime, in 100-µsec increments, that the drive remainsdisconnected until it

BytesBits7 6 5 4 3 2 1 012–13 (default) Data bytes per physical sector (0200H)changeable 0000H14–15 (default) Interleave (0001H)changeable 0000H16–17

Bytes 10–11 The sectors per track field indicates the number of physi-cal sectors the drive allocates per track. The drive reportsthe average number o

C.4 Rigid Disc Geometry page (04H)The Rigid Disc Geometry page is shown below. This table summarizesthe function, the default value and the changeabil

Bytes 2–4 The number of cylinders field specifies the number ofuser-accessible cylinders, including two spare cylindersfor defects. The drive uses

C.5 Verify error recovery page (07H)The verify recovery page specifies the error recovery parameters thetarget shall use during the Verify command and

When EER is set to zero, the target shall use an errorrecovery procedure that minimizes the risk of misdetectionor miscorrection.When the post

C.6.1 Read look-ahead and cachingThe drive uses an algorithm that improves seek performance by readingthe next logical sectors after the last req