[gpfsug-discuss] software RAID?

Sven Oehme oehmes at us.ibm.com
Tue Jul 9 17:18:42 BST 2013


in case you are not aware of it, GPFS itself provides declustered 
distributed Software Raid capabilities with end-to-end checksum and many 
other features. 
it ships in form of a pre-canned Solution, take a look at 


From:   Jonathan Buzzard <jonathan at buzzard.me.uk>
To:     gpfsug main discussion list <gpfsug-discuss at gpfsug.org>
Date:   07/09/2013 09:00 AM
Subject:        Re: [gpfsug-discuss] software RAID?
Sent by:        gpfsug-discuss-bounces at gpfsug.org

On Tue, 2013-07-09 at 12:58 +0100, Pete Smith wrote:
> Hi all
> Slightly nuts question, I know ... but is anyone using software RAID?
> Our test rig has only 0, 1 or 10 as an option. And we'd like to use 6,
> obviously.

I presume you are talking about Linux software RAID on external JOBD

My personal experience is that it sucks really really badly. Put another
way what where fairly low lever operator tasks such as replacing a
failed hard disk, now become the domain of guru level Linux admins.

Then there are all the issues with having large numbers of drives
hanging of the back of a Linux box. A Dell PowerVault MD3200/MD3260 with
expansion enclosures as required is not a lot more expensive and a *LOT*
less of a headache. 


Jonathan A. Buzzard                 Email: jonathan (at) buzzard.me.uk
Fife, United Kingdom.

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