HP StorageWorks XP12000 Disk Array owner's guide (AE002-96029, October 2006)

Recovering from an unplanned power outage

Unplanned power outages occur when the primary building power is lost due to

electrical bl

ackouts, 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 m aintain the array state

for up to 48 hours, depending on the selected battery op eration mode. For more

information, see “Backup Batteries.”

Manual restart a fter power is restored

CAUTION:

After power is restored to your site and before restoring po wer 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 tu rns 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-SYST EM READY turns green, indicating the system is ready.

CAUTION:

Poweringonthediskarraycantakeupto10minutes,dependingonthe

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 “DISA BLE” (opposite ENABLE).

Operations