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XP1024 Hardware 71
Automatic power on restart
Caution As with all sophisticated electronic equipment, unstable power conditions
during a restart can induce problems. HP recommends automatic power on
restart only when power to the disk array is conditioned to ensure it is
stable, such as by using a UPS. If your site does not have a UPS, HP
recommends the disk array be configured for manual restart by keeping the
ENABLE/DISABLE switch in the DISABLE position and using the manual
restart procedure when power has been restored and verified.
The disk array will automatically restart and return to service when power
is restored. To enable this feature, place the ENABLE/DISABLE switch in
the ENABLE position and the PWR ON/OFF switch in the PWR ON
position. (Figure 10 on page 59, item 11/12). When power is restored, your
disk array will restart and the following LED power sequence will occur:
The BS-ON (Figure 10 on page 59, item 9) will turn amber and the PS
ON LED (Figure 10 on page 59, item 10) will turn green.
The CHANNEL LED (Figure 10 on page 59, item 7) will light green
for every adapter installed.
The MESSAGE LED (Figure 10 on page 59, item 3) may turn amber,
if your disk array is not configured for automatic maintenance
notification, signifying a SIM was generated (because the disk array
went down unexpectedly).
Finally, the READY LED (Figure 10 on page 59, item 1) will light
green when the system is ready, which may take up to 10 minutes,
depending on the number of disks installed in the disk array.