Apple Xserve RAID User's guide User's Guide download pdf (Page 4)

4 RAID Utility User Guide

Running RAID Utility

The RAID Utility application is in /Applications/Utilities/. You can open it from there

anytime you want to recongure or check the status of the RAID components in your

computer.

You can also run RAID Utility from the Installer when you start up your computer

using the Mac OS X or Mac OS X Server installation disc that comes with the computer.

Choose Utilities > RAID Utility while you’re in the Installer.

Note: If you plan to perform a task that aect the computer’s startup disk (for example,

reusing the startup disk to create new RAID sets or volumes), you need to start up

the computer from the installation disc that comes with your computer or from an

external disk on which you’ve installed Mac OS X or Mac OS X Server.

About Battery Status

The battery on your RAID card supplies the power needed to save data that’s still

in the card’s write caches at the time of a power failure. The status of the battery is

reected in the overall status of the RAID card as shown in RAID Utility. Conditioning

and charging are the most common causes of battery status changes.

Battery Conditioning

To ensure the maximum charge, the battery on your RAID card is periodically

conditioned (fully discharged and recharged). Conditioning takes place the rst

time you start the computer after installing the RAID card and every three months

thereafter. (If you purchase a computer with the RAID card already installed, the rst

conditioning cycle is already nished.) Conditioning can last up to 12 hours, and until

the battery returns to full charge, RAID Utility displays a yellow battery warning status

and alerts you that the write caches are disabled. This is normal, and you can continue

to set up and use RAID volumes while the battery is conditioning. The warning

indicators return to normal and the caches are reenabled as soon as the battery

reaches full charge.

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Apple Xserve RAID User's guide User's Guide Page 4