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drummerboy03

macrumors member
Original poster
Jun 14, 2009
33
0
I had two 1.5TB drives in an OWC enclosure. I had it formatted as 'Mac OS X Extended (Journaled)' so that it showed up as one 3TB volume when it was mounted.

One of the 1.5TB drives failed yesterday (makes a loud noise when trying to spin up). I suspect the other 1.5TB drive is completely fine as it does not make any odd noises when I remove it and plug it into a single HD slot enclosure.

the problem I'm having now is that I cannot access any of the data on the 1.5TB drive that I suspect is OK...... it does not mount, but it DOES show up in Disk Utility. When I try to verify or repair permissions, i get the following error:

"partition map check failed because no slices were found"

I even tried Disk Warrior, but the drive does not show up in the list.

any help would be GREATLY appreciated!! thank you!
 

ColdCase

macrumors 68040
Feb 10, 2008
3,044
166
NH
When one of my drives in my owc enclosure failed I sent it back to owc and they replaced the drive. When it got back to me I could see all the files on the good drive but all files on the failed drive disappeared and were lost.

In my case I had purchased the drives with the enclosure, so it was under warranty.
 
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drummerboy03

macrumors member
Original poster
Jun 14, 2009
33
0
Your RAID 0 stripe set is unrecoverable.

Hope you had a backup.

http://knowledgelayer.softlayer.com/faq/what-raid

dangit...

I had backed up all the raw GoPro video footage recently, so i at least have that... but i had spent hours editing down that raw footage in an iMovie project that was stored on that drive ;(

was hoping there would be a way to recover some data from the 1 working drive, but it sounds like with RAID 0, it is distributing the data across both drives.

so i'm for sure out of luck? in other words, i should cut my losses and reformat the 1 drive that still works and start to rebuild my life haha?

thanks for the quick response/input!

----------

When one of my drives in my owc enclosure failed I sent it back to owc and they replaced the drive. When it got back to me I could see all the files on the good drive but all files on the failed drive disappeared and were lost.

In my case I had purchased the drives with the enclosure, so it was under warranty.

thanks for the input.. i bought the enclosure separate from the drives
 
Comment

drsox

macrumors 68000
Apr 29, 2011
1,574
103
Xhystos
I had two 1.5TB drives in an OWC enclosure. I had it formatted as 'Mac OS X Extended (Journaled)' so that it showed up as one 3TB volume when it was mounted.

One of the 1.5TB drives failed yesterday (makes a loud noise when trying to spin up). I suspect the other 1.5TB drive is completely fine as it does not make any odd noises when I remove it and plug it into a single HD slot enclosure.

the problem I'm having now is that I cannot access any of the data on the 1.5TB drive that I suspect is OK...... it does not mount, but it DOES show up in Disk Utility. When I try to verify or repair permissions, i get the following error:

"partition map check failed because no slices were found"

I even tried Disk Warrior, but the drive does not show up in the list.

any help would be GREATLY appreciated!! thank you!

RAID0 and Spanned Drives always need a backup as any failure destroys the whole structure. RAID1 does provide resilience against a single drive failure, but it also isn't a backup. IMO get a simple USB drive and make a mirror. Even Time Machine will fail as it's only a single drive.
 
Comment

Fishrrman

macrumors Core
Feb 20, 2009
21,736
7,951
[[ was hoping there would be a way to recover some data from the 1 working drive, but it sounds like with RAID 0, it is distributing the data across both drives.
so i'm for sure out of luck? in other words, i should cut my losses and reformat the 1 drive that still works and start to rebuild my life haha? ]]

RAID _is not_ a backup.

Be governed accordingly, in the future.

Live and learn...
 
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