Recovering From An Unplanned Power Outage; Manual Restart After Power Is Restored; To Restart The Disk Array Manually - HP StorageWorks XP12000 - Disk Array Owner's Manual

Recovering from an unplanned power outage

Unplanned power outages occur when the primary building power is lost due to
electrical blackouts, thunderstorm activity, or similar occurrences, and input AC power
is not received by the disk array. The disk array will maintain its state and recover
when power is restored.
The disk array cache is powered by backup batteries that will maintain the array state
for up to 48 hours, depending on the selected battery operation mode. For more
information, see

Manual restart after power is restored

CAUTION:
After power is restored to your site and before restoring power to the disk array, HP
recommends that you have an electrician verify the power to ensure that all phases are
restored and input power to the disk is stable.
Contact your HP representative for help recovering from a power outage.

To restart the disk array manually:

1.
Move the PS ENABLE switch to the ENABLE position.
2.
Move the PS ON/OFF switch to the ON position.
The following LED power sequence occurs:
BS-ON turns amber.
PS-ON turns green.
SUB-SYSTEM MESSAGE may turn amber if the disk array is not configured to
"phone home," signifying a SIM was generated because of the power outage.
SUB-SYSTEM READY turns green, indicating the system is ready.
CAUTION:
Powering on the disk array can take up to 10 minutes, depending on the
number of disks installed in the disk array. Power on is complete only
when the SUB-SYSTEM READY LED turns green.
Move the PS ENABLE switch to "DISABLE" (opposite ENABLE).
42 Operations
"Backup Batteries."