Installation guide

Monitoring

Manual No. 771961 5-53

New Mylex PCI and All Mylex External RAID Controllers

Figure 5-54 shows the Intelligent BBU window for new Mylex PCI

and all

External RAID Controllers:

Figure 5-54. Intelligent BBU - New PCI and All External Controllers

The Intelligent Battery Backup Unit (BBU) dialog box is used to monitor

and charge or recharge the backup battery pack on the controller. This

battery pack maintains the controller's data in RAM in case AC power is lost

to the disk storage system. When a new battery is needed, the BBU dialog

indicates this by showing the battery can no longer take or hold a charge.

This dialog box is also used after an old battery pack is replaced with a new

one. The new battery must be fully discharged before it can be charged up.

Prior to beginning normal operations, Mylex recommends that you condition

the battery for maximum longevity. See “Conditioning the Battery” on page

5-55.

Power Levels

The Power Levels area of the Intelligent Battery Backup Unit dialog box

contains the following:

• Low Power Threshold. A preset or modifiable power level, expressed

as hours or minutes of charge, used to trigger an alarm when the battery

1. AcceleRAID 352, eXtremeRAID 2000, eXtremeRAID 3000