Hardware options installation 45
No action is necessary. The internal circuitry automatically recharges the batteries and enables the battery
pack. When the system is powered on this process might take approximately 2 hours.
If a system power failure occurs, a fully charged battery pack provides power for up to 150 seconds. During
that interval, the controller transfers the cached data from DDR memory to flash memory, where the data
remains indefinitely or until a controller retrieves the data. The data protection and the time limit also apply
if a power outage occurs. When power is restored to the system, an initialization process writes the
preserved data to the storage drives.
CAUTION: The cache module connector does not use the industry-standard DDR3 mini-DIMMs.
Do not use the controller with cache modules designed for other controller models, because the
controller can malfunction and you can lose data. Also, do not transfer this cache module to an
unsupported controller model, because you can lose data.
CAUTION: To prevent a server malfunction or damage to the equipment, do not add or remove
the battery pack while an array capacity expansion, RAID level migration, or stripe size migration
is in progress.
CAUTION: After the server is powered down, wait for 30 seconds, and then check the amber LED
before unplugging the cable from the cache module. If the amber LED flashes after 30 seconds,
do not remove the cable from the cache module. The cache module is backing up data. Data will
be lost if the cable is detached when the amber LED is still flashing.
Installing a storage controller
HP requires installation of the H240 and P440 cards in the low-profile slot 2 of the primary PCI riser cage
because the current P440/H240 cable solution supports only slot 2. The P441 and H241 cards can be
installed in slot 1, 2, or 3.
For more information about product features, specifications, options, configurations, and compatibility, see
the product QuickSpecs on the HP website (http://www.hp.com/go/qs).
IMPORTANT: For additional installation and configuration information, see the documentation
that ships with the option.
To install the component:
1. Power down the server (on page 17).
2. Remove all power:
a. Disconnect each power cord from the power source.
b. Disconnect each power cord from the server.
3. Do one of the following:
o Extend the server from the rack (on page 17).
o Remove the server from the rack (on page 19).
4. Remove the access panel (on page 20).
5. Remove the PCI riser cage (on page 21).
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