Monday, September 24, 2007

Mac OS X Mirror: The RAID for disks that never fail

I built a mirrored array (RAID-1) on a Mac OS X machine, and a disk failed. Which is why you mirror disks in the first place.

The instructions for re-creating a mirror basically tell you to drag a replacement disk into the array -- presto chango, you're done! Except, I can't. Because when I originally created the array, I didn't dig through the options and enable "Auto-rebuilding".

Or, as Tom said, "Did you go into 'advanced' and deselect `corrupt randomly`?"

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