HP XP7 Owner Guide (H6F56-96006)

When the batteries are connected and the power is off, the batteries slowly discharge. They will
have a charge of less than 50% after two weeks without power. When fully discharged, the batteries
must be connected to power for three hours to fully recharge.
NOTE: The disk array generates a SIM when the cache destage batteries are not charged to at
least 50%. The LEDs on the front panel of the cache boards also show the status of the batteries.
Long term array storage
While connected, the cache destage batteries will completely discharge in two to three weeks
without power applied. If you do not use a XP7 for two weeks or more, contact HP Technical
Support to move the batteries to a disk array that is being used, or turn the disk array on to standby
mode for at least 3 hours once every two weeks.
If you store the system for more than two weeks and do not disconnect the cache destage batteries,
when you restart the system, the batteries will need to charge for at least 90 minutes before the
cache will be protected. To prevent the batteries from discharging during long term storage, contact
HP Technical Support and ask them to disconnect the battery jumpers on the cache boards.
Battery backup operations 73