Quick question about disk utility.

I have software mirror raid set up with Disk Utility. Although the one slice of the two as failed. The disk it's self has not failed just the slice. There appears to be a rebuild option, but would like to know if I click that button will it take the volume offline or will the data still be accessible while it rebuilds?

IIRC the data is still accessible but things slow down a bit.
Generally when a slice fails the drive can't be far behind. The firs thing I would do is make sure you have that RAID backed up.

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