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).