SEAGATE ST12450W/WD - Manuals

SEAGATE ST12450W/WD – Manual in PDF format online.

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Manual SEAGATE ST12450W/WD

Summary

Page 2 - Contents; Seagate

Contents Preface .................................................................. 1 Electrostatic discharge protection ........................... 1 Important safety information and precautions ......... 2 Wichtige Sicherheitshinweise ............................... 5 Technical support services .....

Page 3 - Preface; ST12450W/WD Barr acudaTM SCSI disc; Electrostatic discharge protection

ST12450W/WD Installation Guide, Rev. B 1 Preface This manual contains information for users of theSeagate ® ST12450W/WD Barr acuda™ SCSI disc drives. It provides support services, performance speci-fications, and initial setup information. Additional infor-mation is available in the Barracuda 2, 2HP...

Page 4 - Important safety information and precautions

2 ST12450W/WD Installation Guide, Rev. B • Ground yourself to the drive whenever the drive elec- tronics are or will be exposed. Connect yourself toground with a wrist strap (Seagate part number12263496). Connection may be made to any groundedmetal assembly. As a general rule, remember that youand t...

Page 7 - Wichtige Sicherheitshinweise

ST12450W/WD Installation Guide, Rev. B 5 dards. Typical applications of these disc drives includecustomer packaging and subsystem design. Safetyagencies conditionally certify component assemblies,such as the Barracuda disc drive, based on their finalacceptability in the end-use product. The subsyste...

Page 12 - Technical support services

10 ST12450W/WD Installation Guide, Rev. B Technical support services Seagate Technology provides technical support litera-ture and diagnostic utilities to authorized distributors.Please contact your dealer for technical support andinstallation troubleshooting. Product technical supportis available f...

Page 14 - General description

12 ST12450W/WD Installation Guide, Rev. B General description Barracuda 2, 2HP SCSI disc drives are high-speed,random-access data storage devices. Two-head par-allel technology effectively doubles the internal datatransfer rate when compared to non-parallel headtechnologies. ST12450W/WD drives are i...

Page 16 - Characteristics

14 ST12450W/WD Installation Guide, Rev. B Characteristics ST12450W/WD Interface Fast & Wide SCSI-2 1 Cache type Multi-segmented 1,024 Kbytes Capacity Unformatted 2,437 Mbytes Formatted 2 1,849 Mbytes Recording Cylinders (user accessible) 2,710 Heads (physical) 18 Heads (logical) 9 Modulation RLL...

Page 19 - Initial setup information

ST12450W/WD Installation Guide, Rev. B 17 11 No terminator power. See Section 11.7.3.4 in the Barra- cu da 2, 2HP Product Manual. 12 Seeking is defined as a third-stroke seek at OD. Thecommand is issued every 20 msec. 13 Read track is defined as repeat reads of track 15 with a60% duty cycle. Initial...

Page 20 - Setting the SCSI ID jumpers

18 ST12450W/WD Installation Guide, Rev. B Setting the SCSI ID jumpers Each device on the SCSI chain must have a unique SCSIID. The host system’s SCSI controller usually uses thehighest-numbered ID available (ID15 in wide systems);therefore the lower-numbered SCSI IDs are normallyused for the other S...

Page 21 - Figure 2. Setting the SCSI ID

ST12450W/WD Installation Guide, Rev. B 19 DC Power Connector SCSI I/O Connector SCSI ID = 8 SCSI ID = 9 SCSI ID = 10 SCSI ID = 11 SCSI ID = 12 SCSI ID = 13 SCSI ID = 14 SCSI ID = 15 SCSI ID = 0 (default) SCSI ID = 1 SCSI ID = 2 SCSI ID = 3 SCSI ID = 4 SCSI ID = 5 SCSI ID = 6 SCSI ID = 7 J5 4P 3P 2P ...

Page 22 - Terminating the drive; Figure 3. SCSI bus termination

20 ST12450W/WD Installation Guide, Rev. B Terminating the drive If you are installing a Barracuda 2, 2HP drive in a systemthat has other SCSI devices installed, terminate only theend devices on the SCSI chain. A SCSI “device” is anydisc drive, scanner, tape-backup unit, or other piece ofhardware con...

Page 23 - Note. Use active t erminators when terminating the bus.

ST12450W/WD Installation Guide, Rev. B 21 ST12450W (single-ended) drives are terminated withpermanently mounted active IC terminators. If you installan ST12450W drive and it is not on the end of theSCSI bus, remove the jumper from pins 11 and 12 ofconnector J4 (see Figure 4). This disables the termi...

Page 24 - Terminator power; Figure 5. Setting terminator power jumpers

22 ST12450W/WD Installation Guide, Rev. B Terminator power ST12450W drives may be configured in four differentways (see Figure 5); however, you usually will not needto change this option and should normally leave thedrive configured as it was shipped from the factor y.ST12450WD drives should be conf...

Page 25 - Changing other applicable jumper options; Figure 6a. Additional jumper options

ST12450W/WD Installation Guide, Rev. B 23 Changing other applicable jumper options Barracuda 2, 2HP drives are designed for use in a varietyof systems. Unique installations may require you tochange one or more of the other jumpers to meet specificsystem requirements; however, in most cases, you will...

Page 26 - Figure 6b. Additional jumper options

24 ST12450W/WD Installation Guide, Rev. B Figure 6b. Additional jumper options J4 EDT RES PAR Reserved for future use. Reserved (RES) Enable motor start. This makes the drive wait for the Start Unit command from the host before starting the spindle motor. Motor Start option (MTR) Disable motor start...

Page 27 - Spindle sync cables are used to connect the drives.; Figure 7. Spindle sync jumpers and connectors

ST12450W/WD Installation Guide, Rev. B 25 Synchronizing spindlesin multiple drive configurations If you are installing two or more Barracuda drives, youmay (optionally) want to synchronize their spindles toreduce the latency associated with switching from onedrive to another. Spindle sync cables are...

Page 28 - Figure 8. Spindle sync diagram

26 ST12450W/WD Installation Guide, Rev. B Figure 8 illustrates a typical synchronized spindleconfiguration. After connecting each drive with spindle sync cables,you must designate a master spindle sync referencesource. This master source is normally a disc drivelocated on the same SCSI bus as the ot...

Page 29 - Providing adequate cooling

ST12450W/WD Installation Guide, Rev. B 27 Providing adequate cooling The enclosure design must ensure adequate coolingfor the drive. The maximum ambient temperature is50 o C. The drive’s product manual (83328900) describes howto evaluate the air-flow design. The evaluation consistsof ensuring that t...

Page 30 - Kühlung des Systems

28 ST12450W/WD Installation Guide, Rev. B Kühlung des Systems Die Gehäusekonstruktion muß eine ausreichendeK ü h l u n g d e s L a u f w e r k e s g e w ä h r l e i s t e n . D i eUmgebungstemperatur darf maximal 50 o C betragen. Die Produkthandbuch Barracuda 2, 2HP (Dokument83328900) enthalten Anwe...

Page 32 - Mounting the drive and connecting cables; Mount the drive to the host system’s chassis using

30 ST12450W/WD Installation Guide, Rev. B Mounting the drive and connecting cables Do not touch the connector pins or any components onthe control board without observing static-dischargeprecautions. Always handle the drive by the frame only. The drive may be mounted in any orientation (horizon-tall...

Page 37 - Setzen Sie das Gehäuseoberteil des Host-Systems

ST12450W/WD Installation Guide, Rev. B 35 Systemgehäuse nicht an die HDA/PCB-Erdunganschließen wollen, müssen Sie das Laufwerkauf nichtleitende Weise (galvanisch isoliert) imH o s t - S y s t e m e i n b a u e n . D i e d a r a u s u . U .resultierende verstärkte elektromagnetischeStrahlung fällt in...

Page 38 - Boot the system from a system floppy disc or from a

36 ST12450W/WD Installation Guide, Rev. B Formatting the drive Warning. Formatting a drive erases all user data. Be sure that you understand this principle beforeformatting any hard disc drive. It is not necessary to format a drive which haspreviously been used to store data, unlessyour intention is...