Seagate ST43401N/ND Specifikace

Elite Disc DriveST43401N/NDST43402NDReference Manual

DCPowerCableInsertProbeHereDC PowerConnectorJ15+12 VPin 1+12 VReturnPin 2+5 VReturnPin 3+5 VPin 42 ST43401N/ND and ST43402ND Reference Man

ST43401N/ND and ST43402ND Reference Manual, Rev. C 3ControlBoardPowerBoardOptionalBezelChassisDC PowerConnectorOption Jumpers andSpindle SyncCon

4 ST43401N/ND and ST43402ND Reference Manual, Rev. CControlBoardChassisHead and DiscAssembly (HDA)PowerBoardDC PowerConnectorOptionJumpersPin 1I/

ST43401N/ND and ST43402ND Reference Manual, Rev. C 5Section 2. Planning the systemThis section supplements the installation instructions presented in

6 ST43401N/ND and ST43402ND Reference Manual, Rev. CKM4 x .70 Metric Threads (4)BCDEFJC.G.L6-32 Threads (4)C.G.IIGHASideABCDEFGHIJKL3.250.

ST43401N/ND and ST43402ND Reference Manual, Rev. C 76-32 Threads (4)DEFC.G.6-32 Threads (4)C.G.SideBottomM4 x .70 Metric Threads (4)ABCKONIPHGJLMinmmA

8 ST43401N/ND and ST43402ND Reference Manual, Rev. CGuidelines for proper air flowYour enclosure design must ensure adequate cooling for the drive.We

ST43401N/ND and ST43402ND Reference Manual, Rev. C 9Above unitUnder unitNote. Air flows in the direction shown (front to back) or in rever

10 ST43401N/ND and ST43402ND Reference Manual, Rev. CTo evaluate the air-flow design, place the drive in its final mechanical positionand perform rand

ST43401N/ND and ST43402ND Reference Manual, Rev. C 11Guidelines for I/O cablingThis topic provides recommendations for I/O cabling and lists the parts

ContentsPreface ... iiiElectrostatic discharge protect

12 ST43401N/ND and ST43402ND Reference Manual, Rev. CDrives and initiator in one cabinetDrive0DriveNInitiatorTerminator2 x 34 PinConnector68 Conduc

ST43401N/ND and ST43402ND Reference Manual, Rev. C 13Drives and initiator in separate cabinetsInitiatorDrive2Drive3Drive0Drive1UnshieldedTerminat

14 ST43401N/ND and ST43402ND Reference Manual, Rev. CDrives in separate cabinetsDrive0Drive1Drive2Drive3BulkheadCabinet AInitiatorID 6Drive7Bulk

ST43401N/ND and ST43402ND Reference Manual, Rev. C 15Table 3 lists the parts needed to construct unshielded I/O cables. Table 4 listspart numbers and

16 ST43401N/ND and ST43402ND Reference Manual, Rev. CTable 4. Synchronized spindle cablesSeagateLength part number1.5 feet (0.46 meter) 707039293 fee

ST43401N/ND and ST43402ND Reference Manual, Rev. C 17Using the sweep cycle functionThe sweep cycle is a feature that periodically moves the heads to d

18 ST43401N/ND and ST43402ND Reference Manual, Rev. CSweep Cycle OptionST43401N/NDJ4BST43402NDSweep Cycle OptionJ4BFigure 10. Control board jumpers

ST43401N/ND and ST43402ND Reference Manual, Rev. C 19Section 3. Interface functionsThis section provides an overview of the small computer system inte

20 ST43401N/ND and ST43402ND Reference Manual, Rev. CHostHostAdaptorEmbeddedControllerDrive(logicalunit)HostHostAdaptorEmbeddedControllerDrive(

ST43401N/ND and ST43402ND Reference Manual, Rev. C 21Figure 12. SCSI bus signal linesInitiator TargetData Bus Bits 0-15 (plus parity)Busy (BSY)Select

ST43401N/ND and ST43402ND Reference Manual, Rev. C iiiPrefaceThis is a reference manual for users of Seagate® ST43401N/ND andST43402ND Elite™ disc dri

22 ST43401N/ND and ST43402ND Reference Manual, Rev. CTable 6. SCSI bus signal linesSignal Source FunctionData Bus (DB 15–0+P) I–T Sixteen data-bit sig

ST43401N/ND and ST43402ND Reference Manual, Rev. C 23I/O signal processingThe following paragraphs describe the basic SCSI bus communicationprocess. T

24 ST43401N/ND and ST43402ND Reference Manual, Rev. CTable 8. SCSI bus phase descriptionsPhase DescriptionBus Free No SCSI device asserts Busy or Sele

ST43401N/ND and ST43402ND Reference Manual, Rev. C 25SCSI command executionFigure 13 illustrates the basic flow of a command sequence. The sequenceill

26 ST43401N/ND and ST43402ND Reference Manual, Rev. CThe selected device responds to the initiator by entering the Message Outphase if the initiator h

ST43401N/ND and ST43402ND Reference Manual, Rev. C 27At this point, the Message In phase is entered with a Disconnect messagecode. Following the disco

28 ST43401N/ND and ST43402ND Reference Manual, Rev. CTable 9. Command setGroup 0 commands for direct access devicesOp code Command name00 Test Unit Re

ST43401N/ND and ST43402ND Reference Manual, Rev. C 29continued from previous pageGroup 1 and 2 Commands for Direct Access DevicesOp Code Command Name2

30 ST43401N/ND and ST43402ND Reference Manual, Rev. CTable 10. Message code descriptionsCode(Hex) Initiator Target Description Direction of Transfer00

ST43401N/ND and ST43402ND Reference Manual, Rev. C 31continued from previous pageBit 7 = 1: Indicates an Identify messageBit 6 = 1: Indicates the init

iv ST43401N/ND and ST43402ND Reference Manual, Rev. CImportant safety information and precautionsCaution. Use forced-air ventilation when bench-testin

32 ST43401N/ND and ST43402ND Reference Manual, Rev. CTable 11. Status codesStatus Byte:Bit7 6 54 32 1 0ByteRESVD RESVD <<---------- Status Byte

ST43401N/ND and ST43402ND Reference Manual, Rev. C 33The Request Sense commandThe Request Sense command (03H) requests that the target transfer sensed

34 ST43401N/ND and ST43402ND Reference Manual, Rev. CTable 13. Additional sense codes and their qualifiersByte 12 Byte 13 Description00 00 No addition

ST43401N/ND and ST43402ND Reference Manual, Rev. C 35continued from previous pageByte 12 Byte 13 Description17 02 Recovered data with positive head of

36 ST43401N/ND and ST43402ND Reference Manual, Rev. Ccontinued from previous pageByte 12 Byte 13 Description2F 00 Commands cleared by another initiato

ST43401N/ND and ST43402ND Reference Manual, Rev. C 37continued from previous pageByte 12 Byte 13 Description5A 03 Operator selected write permit5B 00

38 ST43401N/ND and ST43402ND Reference Manual, Rev. CField replaceable unit (FRU) codeIn the event of a failure, the FRU code byte identifies the asse

ST43401N/ND and ST43402ND Reference Manual, Rev. C 39Error codeThis two-byte value provides information about what part of the diagnosticoperation has

Seagate Technology, Inc.920 Disc Drive, Scotts Valley, CA 95066-4544, USAPublication Number: 83327730, Rev. C, Printed in USA

ST43401N/ND and ST43402ND Reference Manual, Rev. C v• Do not remove any circuit boards from the drive chassis. Return the entiredrive for depot repair

vi ST43401N/ND and ST43402ND Reference Manual, Rev. CTechnical support servicesSeagate Technology provides technical support literature and diagnostic

ST43401N/ND and ST43402ND Reference Manual, Rev. C viiLocation Telephone numberUSA, Mexico, Latin America (408) 438-8771England 44-62-847-8011Germany

ST43401N/ND and ST43402ND Reference Manual, Rev. C 1Section 1. General maintenance informationThis section contains general information relating to ma