Q: Unable to rebuild in mirrored RAID after hard drive failure
I plan on getting a mirrored raid setup for my backups of all my work that I have done. I am currently testing out how the built in software RAID works in OSX.
I have setup a mirrored RAID with two flash drives and it works fine, i then tried to simulate if one of the disks were to fail by reformatting it, and then i tried to plug it back in to rebuild it, but it does not allow me to do so the rebuild button is greyed out. Could it be because i had the RAID setup as automatically rebuild? If someone could walk me through the process of rebuilding the raid setup that would be great, i would like to figure this out before purchasing the harddrives.
Posted on Nov 28, 2012 8:38 AM
When I click on RAID Set or the missing RAID Slice, the Rebuild button turns into a Demote button. When I Demote it, the RAID 1 is intact but has only one disk. Then I drag/drop a replacement disk to the Mirrored RAID Set, and then the Rebuild option is not longer greyed out. When I click it the drive is partitioned, formatted, and rebuilt.
Posted on Nov 30, 2012 2:59 PM

