[kwlug-disc] MDADM and RAID

Chris Irwin chris at chrisirwin.ca
Tue Mar 2 15:52:48 EST 2010


On Tue, Mar 2, 2010 at 13:02, Rashkae <rashkae at tigershaunt.com> wrote:
> That being said, I would normally expect a noticeable speed improvement with
> a 4 device Raid 5 Array, not a penalty.

I expected a write penalty due to the parity calculations, but a
possible read improvement.

> It's been a while since I
> experimented with this, however, and I do not have 4 decent drives available
> on hand to crate a comparison test for you.  (maybe a weekend project if I
> have time and this hasn't been settled by someone knowledgeable on the
> subject.)

I suppose I could experiment, but I'll probably just go to 2x raid1
arrays and lose the extra 500GB storage.

-- 
Chris Irwin
<chris at chrisirwin.ca>



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