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RAID 1 Array Impacted

Posted on 2009-05-10
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Last Modified: 2013-11-14
Using a PERC 320/ DC controller with two 146G HDD, in a RAID 1 configuration.
I attempted to add two more 300G SCSI drives to the extra SCSI ports, somehow this affected the ARRAY.
I was still able to boot into Windows with one of the 146G HDD but not the other.
Put them both back in, From the RAID Management Software I set the questionable 146G HDD, which is in the 'ready' state, to 'Hot spare for the ARRAY'.
The rebuild started and ended 5 hrs later with an error.
Now the ARRAY status is impacted and the 146G HDD is stuck in the rebuilding state.
How do I fix this without loosing my data?
Thanks, Guy
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Question by:Tano10
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by:coredatarecovery
ID: 24350033
Raid 1 is mirroring. if you are going to add 2 300 gig hard disks to a mirroring array, you won't have a hot spare.

Your questionable drive is most likely failing.

(If it did not rebuild correctly.)

with the perc 320/dc controller, you can build a raid 1 with 2 300 gig hard disks, and then copy the data from the 146 gig hard disk to the 300 gig hard disk (That is actually a mirror) using clonezilla, a free drive cloning tool.

you can also use ghost, if you have it available to you to do the job.


Raid 1 is mirroring, that means, you can't add to the size like JBOD (Just a bunch of disks)
and if you put a 300 in a raid 1 with a 146  gig you will limit it's size to 146 gigs.
you CANNOT increase the size of the raid 1 by sticking in bigger disks.

You MUST build the bigger array, Then clone the data from the smaller to the bigger array.

Hope this helps,
Chuck House
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Tano10 earned 0 total points
ID: 24357168
Chuck,
It turns out there were some bad sectors on the 146 I was using to rebuild the array.
After running a disk verify and repairing the bad sectors, the rebuild completed successfully.
I think one of the 300s must have had the same ID as one of the 146's and broke the original array.
I forced the 300's ID with jumpers and was able to add them without breaking the original array.
Then just created a second array with the 300s. No need to clone. Going to use the first arry for OS and misc storage and the second array for just storage.
Thanks
Guy
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by:coredatarecovery
ID: 24358146
awesome.
Glad I could help out.
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