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Barracuda 2LP Installation Guide, Rev. E
Other applicable jumper options
Several other jumper options are available as illustrated.
Pin 1
J4
Pin 2
Pin 1
Reserved
Remote LED
connector*
*
Note to subsystem designers: In
Europe, a red LED indicates an error
or warning condition. For this reason,
you may want to use a color other
than red with this connection.
Figure 9. Additional jumper options
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Reserved
Parity Check option
Pin 1
Enable parity check of
J2
SCSI bus (default).
Disable parity check.
Write Protect option
Write protect = Off
(enables writing –
default)
Write protect = On
J4
(disables writing)
Motor Start option
(front view of J4)
Enable motor start. The
drive waits for the Start
Unit command from the
host before starting the
spindle motor.
Disable motor start
GND (cathode)
(default). The drive
POS (anode)
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.
37
N/ND drives
J2
Pin 2
Pin 1
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