Apple RAID Utility - Manual (Page 12)

12
Reviewing Event Messages
RAID Utility keeps a list of events related to the current state of the RAID card, RAID
volumes, and their components.
To view events:
1 Open RAID Utility.
2 Click Status, under Controller, in the list on the left side of the window.
To erase an event, click the button in the Clear column.
Verifying a RAID Set
You can use the Verify RAID Set command to confirm that data stored on a RAID 1,
RAID 0+1, or RAID 5 volume is protected.
The performance of the RAID set and any volume based on it is degraded during
verification.
To verify a RAID set:
1 Open RAID Utility.
2 Select the RAID set in the list on the left side of the window.
3 Click Verify RAID Set.
If the verification process reports problems, you can use the command
$ raidutil modify volume --rewrite
in Terminal to recreate the volume’s data protection information. For information, see
the
raidutil
man page or type
raidutil
at the command-line prompt.
If Write Caches are Disabled
The RAID card backup battery may not be fully charged. To protect your data, the RAID
card automatically disables write caching whenever the battery is not fully charged.
Once every three months the RAID card reconditions the battery by completely
discharging and then recharging it.
If the Battery is Not Fully Charged
Every three months, the RAID card automatically reconditions its battery by completely
discharging and then recharging it. During the reconditioning cycle, you may see an
alert advising you that the 72-hour battery reserve is unavailable and the controller
status may indicate that write caches are disabled. Performance may be slightly
degraded during this time, but will return to normal when the battery is recharged.
To check battery status:
1 Open RAID Utility.
2 Click Status in the left column.