From: Luigi Genoni <kernel@Expansa.sns.it>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Thunder from the hill <thunder@ngforever.de>,
<linux-kernel@vger.kernel.org>,
Martin Eriksson <nitrax@giron.wox.org>
Subject: Re: HPT370 RAID-1 or Software RAID-1, what's "best"?
Date: Fri, 15 Mar 2002 19:07:57 +0100 (CET) [thread overview]
Message-ID: <Pine.LNX.4.44.0203151903001.32102-100000@Expansa.sns.it> (raw)
In-Reply-To: <E16lvju-0004Bj-00@the-village.bc.nu>
On Fri, 15 Mar 2002, Alan Cox wrote:
> > Hardware RAID is indeed better, but what you get using HPT370 IDE
> > controlelr is not hardware raid at all. Just read the code of the driver.
> > You get a software raid, period.
>
> Its not always that simple either.
>
> Software raid on aic7xxx totally blows away the Dell/AMI megaraid card I
> have, to the point the megaraid now resides in my testing bucket. The promise
> Supertrak 100 (now superceded by the SX6000) is also slower than the
> software IDE raid, but does use less CPU in RAID5 mode.
yes, I know, but I was talking "generaliter"
>
> Some hardware raid cards do seem to be winners. The Dell Perc2/QC aacraid
> based boards (233Mhz ARM etc) really shift. When I've had the chance to
> borrow the disks to test I've seen it running over 100Mbytes/second. It
> also supports nice stuff like online reconfiguration of active volumes.
> [$$stupid from Dell $$notalot from ebay ;)]
On my CISS Compaq array I get quite similar performances ;)
Luigi
next prev parent reply other threads:[~2002-03-15 18:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-15 14:52 HPT370 RAID-1 or Software RAID-1, what's "best"? Thunder from the hill
2002-03-15 15:29 ` Alan Cox
2002-03-15 16:52 ` Luigi Genoni
2002-03-15 17:43 ` Alan Cox
2002-03-15 18:07 ` Luigi Genoni [this message]
2002-03-16 1:12 ` Mike Fedyk
2002-03-18 19:56 ` Bill Davidsen
-- strict thread matches above, loose matches on Subject: below --
2002-03-14 18:33 Thunder from the hill
2002-03-14 18:53 ` Alan Cox
2002-03-15 9:31 ` Luigi Genoni
2002-03-15 12:59 ` Martin Eriksson
2002-03-15 14:00 ` Ulrich Wiederhold
2002-03-13 21:20 Martin Eriksson
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