[GLLUG] Replacement disk in RAID

Dr. Axel Stammler axst at users.sourceforge.net
Sun Apr 30 10:16:18 UTC 2023

On Sun 2023-04-30 08.58.51, Greater London Linux User Group wrote:
>On 30/04/2023 08:04, Dr. Axel Stammler via GLLUG wrote:

>>RAID 1 ┌ RAID 4 ┌ A
>>        │        └ B ← needs to be replaced
>>        │ RAID 4 ┌ C
>>        └        └ D
>I'm a bit out of practice with RAID, but how can you have a RAID 4 
>array with only two disks?  I thought RAID 4 had a dedicated parity 

I think I got things mixed up, sorry; you are right, of course. I created this logical volume three years ago:

mirrored logical volume ┌ A C
                         └ B D

B has failed.

Thank you for helping me clear this up here.

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