Seagate BARRACUDA 4 Family Installation Manual page 47

Barracuda 4 Installation Guide, Rev. E
Parity Check option (PAR)
Enable parity check of SCSI bus data
(default).
Disable parity check.
Motor Start option (MTR)
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 setting as described below.
Delay Motor Start option (DMS)
(valid only if the Motor Start
jumper is not connected)
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).
Disable the delay motor start option
(default).
Figure 20. Additional jumper options
45
Pin 1
J01
J4
MTR
PAR DMS
J4