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November 27th, 2018 20:00
replacing a failed RAID 1 disk in PowerEdge T620
Hi All,
We have one server Dell PowerEdge T620 with Perc H710 controller.
Below is the RAID configuration:
RAID 1 with two disks (One disk failed)
RAID5 with 4 disks.
All disks are the same size
We are planning to replace the RAID1 failed disk as below process.
1. Taking the full backup of the server
2. Break the RAID 5 Array and remove one disk from out of 4 disks (RAID5 mini disks 3 required)
3. remove the faulty disk from the RAID1 and insert the one disk from RAID5, which is removed from out of 4 disks.
4. After the rebuilding RAID1, we will we reconfigure the RAID5 again with 3 disks and restore the data.
Please suggest if it will work and how to identify the RAID5 disks in uses physically to remove one for using the RAID1 array.
theflash1932
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16.3K Posts
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November 27th, 2018 23:00
No, you can't reconfigure a RAID array to make it smaller, especially by removing disks. You need to get a real replacement disk for the failed one … OR you need to do a backup, wipe out the RAID 5, make a new smaller one, then restore using backup software capable of restoring to a smaller "disk". Just replace the drive.
bankuk
3 Posts
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November 28th, 2018 00:00
yes, I am saying the same thing in the previous note, We will take full backup with backup toll and then break the RAID5 and use one disk out of 4 from the RAID5 and replace in RAID1 the faulty disk. then we will reconfigure this using three disks.