HP Smart Array E500 Controller User Guide

Upgrading or replacing controller options 17

Plug the other end of the battery cable into the connector on the cache module.

After installing a battery pack, you might see a POST message during reboot indicating that the array

accelerator (cache) is temporarily disabled. This behavior is normal because the new battery pack is likely

to have a low charge. You do not need to take any action because the recharge process begins

automatically when the battery pack is installed. The controller operates properly while the battery pack is

recharging, although the performance advantage of the array accelerator is absent. When the battery

pack has been charged to a predetermined level, the array accelerator is automatically enabled.

Replacing a battery

WARNING: There is a risk of explosion, fire, or personal injury if the battery pack is not

properly handled. Refer to "Battery replacement notice (on page 35)" before installing or

removing any item that contains a battery pack.

1. Close all applications, and then power down the server. This procedure flushes all data from the

cache.

CAUTION: Do not replace a battery pack while the server is powered up. In this situation, the

loose end of the battery cable that is still connected to the cache can cause a short circuit,

leading to permanent electrical damage.

2. Disconnect the server from the AC power source.

3. Observe the BBWC Status LED ("Battery pack LEDs" on page 29).

o If the LED is blinking every two seconds, data is still trapped in the cache. Restore system power,

then repeat the previous steps in this procedure.

o If the LED is not lit, proceed with the next step.