A week ago, a mirrored drive starting ejecting on its own. I pulled up Disk Utility and it showed that one of the drives was corrupt (I forget the exact verbiage). I had the option to "rebuild", but chose to get a new drive. I could not determine which drive was bad, but I had a 50% chance of pulling the right one. I replaced the bad drive and fired it up. I deleted the mirrored settings by accident as I thought I was redirecting it to the new drive. After several minutes, the "bad" drive got ejected. I though, maybe I accidentally pulled the good drive out. I swapped them and the same problem happened. To determine if it was the enclosure, i swapped the bay positions of the new and "bad" drive. Again, dropped the "bad" drive. I decided to put both original drives and pursue the "rebuild" option. Since I deleted the mirror settings, the option was no longer available. After a few minutes, it dropped both drives. I have plenty of back ups so I'm not worried about the data. I highly suspect one of the original drives is corrupt.
The question: Has anyone seen this where once the mirror settings are deleted, the original drives (which were mirrored) eject by themselves? Even though I deleted the mirror settings, the drives still had "RAID slice" verbiage appear within Disk Utility. If both of these drives are independent, why would the get ejected?
I am creating a completely new back up of the data, then plan to reformat both original hard drives. Then instead of mirroring them, I'll keep them independent and use Carbon Copy to each disk. This way I'll avoid this problem should it happen again. Any help would be greatly appreciated.
The equipment:
WD 4.0TB Black (approximately 3 years old and only turned on for back up)
Akitio Thunderbolt2 Quad
MacPro 2013 (aka nMP)
The Akitio is a 4-bay drive. The other 2 drives are not affected and are working properly.
Thank you,
The question: Has anyone seen this where once the mirror settings are deleted, the original drives (which were mirrored) eject by themselves? Even though I deleted the mirror settings, the drives still had "RAID slice" verbiage appear within Disk Utility. If both of these drives are independent, why would the get ejected?
I am creating a completely new back up of the data, then plan to reformat both original hard drives. Then instead of mirroring them, I'll keep them independent and use Carbon Copy to each disk. This way I'll avoid this problem should it happen again. Any help would be greatly appreciated.
The equipment:
WD 4.0TB Black (approximately 3 years old and only turned on for back up)
Akitio Thunderbolt2 Quad
MacPro 2013 (aka nMP)
The Akitio is a 4-bay drive. The other 2 drives are not affected and are working properly.
Thank you,