Raid and Mirror Volume

Forget it that they're failed, but why are the RAID and Mirror volumes here also displayed under Disk 0 and Disk 1 in the attached? the RAID volume E is also seen in both disks while the mirrored volume G is in Disk1 with both Volume E: and F: Can someone explain the scenario please?
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Robert MuscatAsked:
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arnoldCommented:
This is OS level arrangements. not sure I understand what you are asking.

Whoever set it up, used Physical drives as dynamic and carved them up to setup the volumes and types...

Look in device manager whether these resources are comming from a SAN, or similar.....
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Seth SimmonsSr. Systems AdministratorCommented:
why are the RAID and Mirror volumes here also displayed under Disk 0 and Disk 1 in the attached?

that's how it was configured...a raid array was created for 2gb and a 2.55gb volume mirrored on those 2 disks
looks normal to me; just showing the volume is part of a raid set
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Tom CieslikIT EngineerCommented:
I don't understand what you don't understand. :)
You have a disk 3 that is missing because disk failure and part of this disk is providing a mirror to your drive G.
Now you have drive G not mirrored because of disk 3 failure.
Just replace disk 3 and use disk 4.55GB of larger and go to your Windows Raid management software and assign replaced disk as replacement to disk 3
All Raid should be rebuild.
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noxchoGlobal Support CoordinatorCommented:
You are using RAID mirror and RAID span on this configuration. Span means you can span one volume over several dynamic drives thus expanding the size of the volume like you did with E:
And yes, this is a software RAID and such representation of volumes and disks is absolutely typical for software RAID.
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andyalderCommented:
It's not called span, that's when you concatenate several disks one after the other, it's called "striped volume with parity".

Maybe they don't understand that some old servers didn't have hardware RAID controllers, must be pretty old with those disk sizes.
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noxchoGlobal Support CoordinatorCommented:
It's not called span, that's when you concatenate several disks one after the other, it's called "striped volume with parity".
Yes, correct. Stripe was meant.
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Gerald ConnollyCommented:
So what you have is 3 disks , each with multiple partitions. One of the partitions from disk-0, -1 & -3 have been setup up as RAID-5 volume E:, and another partition from disk-1 & -3 as a RAID-1(mirror set) volume G:
An unusual setup, and as Andy said, must be an old old system (last century?) with disks that size
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PberSolutions ArchitectCommented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Split:
-- Tom Cieslik (https:#a42418116)
-- Seth Simmons (https:#a42418099)
-- Gerald Connolly (https:#a42420611)


If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

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