[8105] in linux-scsi channel archive
Re: Recomendation HW RAID controller
daemon@ATHENA.MIT.EDU (Alan Cox)
Mon Feb 14 16:36:52 2000
To: smarlowe@ihs.com (Scott Marlowe)
Date: Mon, 14 Feb 2000 21:14:10 +0000 (GMT)
Cc: linux-scsi@vger.rutgers.edu, linux-raid@vger.rutgers.edu
In-Reply-To: <Pine.LNX.4.04.10002141022050.22771-100000@css120.ihs.com> from "Scott Marlowe" at Feb 14, 2000 10:24:02 AM
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Message-Id: <E12KSou-0005cX-00@the-village.bc.nu>
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
> Has anyone done any benchmarks that compare Linux software RAID to hardware
> RAID? The parity generation numbers that go by in my software RAID boxes
> are quite impressive, so I'd guess that software RAID would hold its own,
> but don't have any real world data to confirm or deny my beliefs.
That is too simplistic. The software raid numbers are using more CPU power.
If your box is not CPU bound (or you can add an extra CPU easily) then it
may well be software is faster. It isnt just a straight compare though, you
need to ponder CPU usage
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