6.2.7.2Charging the Battery Pack

The battery pack is shipped uncharged, and you must charge it for

6 hours before you can use it. The battery pack will not supply power for the full data retention time until it is fully charged.

It is a good idea to set the MegaRAID controller cache write policy option to Write-Throughduring the battery pack charging period. After the battery pack is fully charged, you can change the cache write policy to Write-Back.

6.2.7.3Changing the Battery Pack

The MegaRAID configuration software warns you when the battery pack must be replaced. A new battery pack should be installed every 1 to 5 years. The procedure for changing the battery pack is as follows:

1.Bring down the operating system properly. Make sure that cache memory has been flushed. You must perform a system reset if operating under DOS.

When the computer reboots, the MegaRAID SCSI 320-2 Ultra320 controller flushes cache memory.

2.Turn the computer power off and remove the computer cover.

3.Remove the MegaRAID controller.

4.Disconnect the battery pack cable or harness from J10 on the MegaRAID SCSI 320-2 Ultra320 controller.

5.Install a new battery pack and connect the new battery pack to J10.

6.Disable write-back caching using MegaRAID Manager or Power Console Plus.

6.2.7.4Disposing of a Battery Pack

Warning: Do not dispose of the MegaRAID battery pack by fire. Do not mutilate the battery pack. Do not damage it in any way. Toxic chemicals can be released if it is damaged. Do not short-circuit the battery pack.

The material in the battery pack contains heavy metals that can contaminate the environment. Federal, state, and local laws prohibit disposal of some rechargeable batteries in public landfills. These

Installation Steps

6-15

Copyright © 2002 by LSI Logic Corporation. All rights reserved.