Seagate ST12550N/ND/W/WD, ST11950N/ND/W/WD manual Res Par Dms Res Mtr Wp

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ST11950 and ST12550 Installation Guide, Rev. D 31

J4

Pin 1

 

J01

RES PAR DMS

RES MTR WP

J4

Reserved (RES)

Reserved for factory use.

Parity Check option (PAR)

Enable parity check of SCSI bus data (default).

Disable parity check of SCSI bus data.

Motor Start option (MTR)

Enable motor start. This makes the drive wait for the Start Unit command from the host before starting the spindle motor.

Disable motor start (default). This causes the drive to start according to the Delay Motor Start option setting as described below.

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

Motor start delay equal to the SCSI ID multiplied by 10 seconds. For example, if the SCSI ID = 2, the drive will delay for 20 seconds before starting.

Disable the Delay Motor Start option (default).

Write Protect option (WP)

Write Protect = On (disables writing).

Write Protect = Off (enables writing – default).

Figure 10b. Additional jumper options

for ST11950W/WD and ST12550W/WD drives

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Contents Barracuda 1 Disc Drive ST11950N/ND/W/WD ST12550N/ND/W/WD Contents Electrostatic discharge protection ST11950 and ST12550 Installation Guide, Rev. DImportant safety information and precautions Page ST11950 and ST12550 Installation Guide, Rev. D Wichtige Sicherheitshinweise Page Page Page Page SeaFAX USA 408 438-2620 England 10 ST11950 and ST12550 Installation Guide, Rev. DSeaFONE 408 SeaTDD 408SeaBOARD TelephoneLocation Number General description 12 ST11950 and ST12550 Installation Guide, Rev. DBarracuda 1 and 2 disc drive N/ND type Characteristics ST11950N/ND ST11950W/WD 14 ST11950 and ST12550 Installation Guide, Rev. DCharacteristics ST12550N/ND ST12550W/WD Amps 16 ST11950 and ST12550 Installation Guide, Rev. DST11950 and ST12550 Installation Guide, Rev. D From previous 18 ST11950 and ST12550 Installation Guide, Rev. DInitial setup information Setting the Scsi ID jumpers 20 ST11950 and ST12550 Installation Guide, Rev. DSetting the Scsi ID on N- and ND-type drives Setting the Scsi ID on W- and WD-type drives 22 ST11950 and ST12550 Installation Guide, Rev. DScsi bus termination Terminating the driveST11950N and ST12550N drives Installing terminator packs ST11950N shownST11950W and ST12550W drives Enabling termination On ST11950W and ST12550W drives 26 ST11950 and ST12550 Installation Guide, Rev. DTermination is supplied Terminator powerChanging other applicable jumper options 28 ST11950 and ST12550 Installation Guide, Rev. DScsi Scsi I/O 30 ST11950 and ST12550 Installation Guide, Rev. DRES PAR DMS RES MTR WP Synchronizing spindles 32 ST11950 and ST12550 Installation Guide, Rev. DJ5 Pin ST11950N/ND ST12550N/ND Drives 34 ST11950 and ST12550 Installation Guide, Rev. DProviding adequate cooling Kühlung des Systems 36 ST11950 and ST12550 Installation Guide, Rev. DAbove unit Über der Einheit Under unit Unter der Einheit Mounting the drive and connecting cables 38 ST11950 and ST12550 Installation Guide, Rev. DInstallation des Laufwerkes und Anschluß der Kabel Dimensions Abbildung 15. Laufwerkabmessungen 40 ST11950 and ST12550 Installation Guide, Rev. DPage DC power connector Abbildung 16. Gleichstromanschluß Hinweis Page Formatting the drive