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Barracuda 4 Installation Guide, Rev. E 45
Figure 20. Additional jumper options
Enable parity check of SCSI bus data
(default).
J4
PAR
MTR
DMS
Parity Check option (PAR)
Disable parity check.
Enable motor start. The drive waits for
the Start Unit command from the host
before starting the spindle motor.
Motor Start option (MTR)
Disable motor start (default). The drive
starts according to the Delay Motor
Start option setting as described below.
Motor start delay equal to the SCSI ID
multiplied by 10 seconds plus 3 seconds.
For example, if the SCSI ID = 2, the drive
starts in 23 seconds ((2x10)+3 = 23).
Delay Motor Start option (DMS)
(valid only if the Motor Start
jumper is not connected)
Disable the delay motor start option
(default).
Pin 1
J4
J01
W/WD drives