Is my RAID Virtual Disk Redundant?

Servers

Servers
Information and ideas on Dell PowerEdge rack, tower and blade server solutions.

Is my RAID Virtual Disk Redundant?

This question is answered

Hi,

I'm working on replacing a failing drive in an MD1000 RAID connected via PERC 6/E.

I'm unsure about some terminology in the Server Administrator Storage Management User’s Guide.

It refers often to a 'Redundant Virtual Disk', e.g.

"Replacing a Failed Disk

You may need to replace a failed disk in the following situations:

  • Replacing a Failed Disk that is Part of a Redundant Virtual Disk

  • Replacing a Failed Physical Disk that is Part of a Non-Redundant Virtual Disk "

Does 'Redundant Virtual Disk" simply mean a virtual disk using a RAID configuration that has parity? My configuration is RAID-50. If so, then this is a redundant virtual disk, right? So I can follow instructions meant for a redundant virtual disk?

Thanks,

Michael

Verified Answer
  • "Does 'Redundant Virtual Disk" simply mean a virtual disk using a RAID configuration that has parity?"

    RAID 0 is NOT redundant; all other levels (1/5/6/10/50/60) are redundant.  Not all RAID configurations use parity.  RAID 1/10 do not use parity - they use mirroring.

All Replies
  • "Does 'Redundant Virtual Disk" simply mean a virtual disk using a RAID configuration that has parity?"

    RAID 0 is NOT redundant; all other levels (1/5/6/10/50/60) are redundant.  Not all RAID configurations use parity.  RAID 1/10 do not use parity - they use mirroring.

  • Yes thanks, that makes sense. Redundancy through either parity or mirroring.

    So my raid-50 config is considered redundant and I can follow the related instructions.