HP StorageWorks Disk Arrays XP128/XP1024 Owner's Guide (A7906-96012, July 2005)

40 HP StorageWorks Disk Arrays XP128/XP1024 Owner’s Guide
Automatic power on restart
Caution As with all sophisticated electronic equipment, unstable power during a
restart can induce problems. Hewlett-Packard recommends automatic
power on restart only when the power to the disk array is conditioned to
ensure stability (for example, using a UPS). If your site does not have a
UPS, HP recommends configuring the disk array 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.
Your 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 3 on page 29, items 11 & 12). When power is restored,
your disk array will restart and the following LED sequence will occur:
The BS-ON LED (Figure 3 on page 29, item 9) will turn amber and
the PS ON LED (10, Figure 3 on page 29, item 10) will turn green.
The CHANNEL LED (Figure 3 on page 29, item 7) will light green
for every adapter installed.
The MESSAGE LED (Figure 3 on page 29, 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 3 on page 29, 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 your disk array.