Seagate ST31250W/WD/WC/DC, ST31250N/ND Other option jumpers are available as illustrated below

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42Barracuda 2LP Installation Guide, Rev. E

W/WD drives

Other applicable jumper options

Other option jumpers are available as illustrated below.

Pin 1

J2

J2

Pin 2

Pin 1

Reserved

Parity Check option

Enable parity check of SCSI bus (default).

Disable parity check.

Write Protect option

Write protect = Off (enables writing – default)

Write protect = On (disables writing)

Motor Start option

Enable motor start. The drive waits for the Start Unit command from the host before starting the spindle motor.

Disable motor start (default). The drive starts according to the Delay Motor Start option.

Delay Motor Start option (valid only if the Motor Start jumper is not connected)

Disable the Delay Motor Start option (default).

Motor start delay equal to the SCSI ID multiplied by 10 seconds. For example, if the SCSI ID = 2, the drive starts in 20 seconds.

Figure 14a. Additional jumper options

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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 ForumSeaBOARD SeaFONE 408SeaTDD 408 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