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pchettri
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Dell RAID controller

I got two Dell perc controller with connecter 0 and 1. Connector 0 shows to 70 gb SAS and 2 140 gb sata and connector 1 shows 3 140 gb sata. Is there a way to rebuilt the raid without damaging OS. I do not know the disk that integrated to C and E drive. I do not want to make changes to C drive and loose OS and license. But I am planning to add more space to E drive by adding newer disk with more storage.
This used to be an old exchange server, now I want to use this as witness server, if I create DAG and as archive server for archive enabled mail as as backup server to backup file using vdp appliance.
Is it easier to take symantec image of OS and repliace all disk and load OS using symantec BE 13 bare metal image, if RAID drive configuration does not get messed up during the process?
Hardware Dell poweredge 2950
Server HardwareStorageDellRAID

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pchettri

8/22/2022 - Mon
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jmcg

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John Tsioumpris

Well it is possible and i have already done it some months ago ...
Just follow the instructions here as descreiber by Steve Friedl's post....
BUT take first a full image of your server preferably with two separated tools because as always something can go wrong....
PowerEdgeTech

You can't mix SAS/SATA in an array, so if you need to move from one to another, you will need to do a backup and restore to the array of the new type.

What is described in tsgiannis's article is called a "retag". A retag is a RECOVERY operation, NOT an array expansion operation. The expansion of the array is a SIDE-EFFECT of the recovery operation and not its intended design. A retag may screw up the mappings and cause failure, either immediate or down the road. I would recommend against a retag for expanding your array and do a backup/restore instead, as recommended by jmcg.
pchettri

ASKER
Looks like it is all SAS drive. I see two virtual disk (0 and 1). It looks vdisk 0 is paired up with two 70 gb disk and vdisk 1 configured with three 147 gb disk. I tried re-configuring vdisk 1 which changed it from raid 5 to raid 0.
I am sure C drive is using vdisk 0 and E drive is using vdisk 1 based on size. But I reboot the server by taking one HDD drive it does not start. It makes it difficult to expand all three disk in vdisk 1.I want to replace all three disk in vdisk 1 to get more storage space. But I would like find a way to test. May be delete vdisk 1 and reboot with just two disk, to see if I can replace rest of the disk
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William Peck
jmcg

It's odd that a missing drive causes the server to not start unless your virtual disk 0 is set up as RAID 0.

Is this a PERC5 or PERC6? Are you using the BIOS (ctrl-R) utility to do the reconfig?

While nothing is guaranteed, you can usually delete a virtual disk, then reconstitute it [but not initialize it] using the same disks [in the same order] and the volume will come back good as new. But the only safe way to play with this beast is to make a good, soiid backup first.
PowerEdgeTech

It's called a retag.

You can't "reconfigure" on a PERC 5/6 from the CTRL-R BIOS utility.
jmcg

PowerEdgeTech - I must not be understanding you or I'm not using the right vocabulary. Here's a video

https://www.youtube.com/watch?v=D5lGWdvJyS4 (How to RAID Setup Dell Poweredge 2950 Server PERC 5/i)

of someone doing what I call a config or reconfig of a PERC5 on a 2950, from ctrl-R. I understand there may also be a utility that can be run under Windows that will reach down and manipulate the controller, but I haven't used it.

If you mean that the "retag" operation can't be done from BIOS utility, then I can't disagree, but I thought all of us were urging pchettri not to attempt that.
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jmcg

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PowerEdgeTech

That is what I would recommend.
pchettri

ASKER
I am taking backup using BE 2013 and wiping second vdisk 1 and see the OS is operation. Once it works, I will reboot the server and try removing other disk in array and see if it boots up
pchettri

ASKER
I deleted the VD1 and OS is still running after reboot. It has been resolved
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