Seagate ST31250W/WD/WC/DC, ST32550W/WD/WC/DC, ST31250N/ND Terminator power, Synchronizing spindles

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22	Barracuda 2LP Installation Guide, Rev. E

For information about how to terminate your drive, refer to the appropriate drive-specific section.

Terminator power

You usually will not need to change this option and can normally leave the drive configured as it was shipped from the factory. For information about how to change the terminator power option on your drive, refer to the appro- priate drive-specific section.

Synchronizing spindles

If you are installing two or more Barracuda drives, you may (optionally) synchronize their spindles to reduce the latency associated with switching from one drive to another. Spindle sync cables are used to connect the drives.

After connecting each drive with spindle sync cables, designate a master spindle sync reference source. This master source is normally a disc drive located on the same SCSI bus as the other drives you want to synchro- nize with. To designate a drive as the master, use SCSI interface commands. Refer to the product manual for information about using these commands.

For information about how to synchronize the spindles for your drive, refer to the appropriate drive-specific section.

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Contents Barracuda 2LP Contents Preface Electrostatic discharge protectionImportant safety information and precautions Page Barracuda 2LP Installation Guide, Rev. E Wichtige Sicherheitshinweise Barracuda 2LP Installation Guide, Rev. E Page Barracuda 2LP Installation Guide, Rev. E Page SeaFAX USA 408 438-2620 England CompuServe ForumSeaFONE 408 SeaTDD 408SeaBOARD Location Modem number General description Characteristics ST31250 ST32550 Barracuda 2LP Installation Guide, Rev. E Amps Barracuda 2LP Installation Guide, Rev. E Barracuda 2LP Installation Guide, Rev. E Drive models General informationScsi ID jumpers Drive termination Scsi bus terminationTerminator power Synchronizing spindlesProviding adequate cooling Kühlung des Systems Suggested air flow Abbildung 3. Empfohlener Luftstromverlauf Mounting the drive and connecting cables Installation des Laufwerkes und Anschluß der Kabel Barracuda 2LP Installation Guide, Rev. E DC power connector Abbildung 4. Gleichstromanschluß Hinweis Formatting the drive Enabling write cache Setting the Scsi ID jumpers Setting the Scsi IDTerminating the drive Terminating the driveSetting terminator power jumpers Spindle sync connectors Other applicable jumper options Several other jumper options are available as illustratedWD drives Terminating the drive ST32550W shown Term. power to Scsi bus default Scsi I/O Other option jumpers are available as illustrated below Scsi ID = WC/DC drives Applicable jumper options Option jumpers are available as illustrated belowPin J4 Pin 1 front view of J4 Page Page