Downgrade from RAID6 to RAID5 -- MIDRANGE-L

Subject: Downgrade from RAID6 to RAID5
From: Don Brown <DBrown@xxxxxxxxxx>
Date: Fri, 24 Nov 2017 16:53:56 +1000
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Hi All,

Long story short.

Have a system at 7.3 with 6 x 139GB spinning disks RAID6 and a disk write
performance issue.

As RAID6 will require three writes to update all striping and RAID5 will
need two theoretically converting from RAID6 to RAID5 should provide a
performance increase ?

There is no space for additional drives in this system - Mirrored pair are
used in Asp02

SSD's is not an option because both IBM and IBM remarketing both do not
have any of the required drives for this model 8202-E4B

We are considering second hand SSD's but not a preferred option.

Has anyone changed the RAID configuration from 6 to 5 and have any
comments on the process ?

Thanks
Don Brown

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Follow-Ups:

Re: Downgrade from RAID6 to RAID5 , DrFranken
Re: Downgrade from RAID6 to RAID5 , Jim Oberholtzer
RE: Downgrade from RAID6 to RAID5 , Steinmetz, Paul

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