From: Michael Tokarev <mjt@tls.msk.ru>
To: Max Waterman <davidmaxwaterman+gmane@fastmail.co.uk>
Cc: Ross Vandegrift <ross@lug.udel.edu>, linux-raid@vger.kernel.org
Subject: Re: md faster than h/w?
Date: Sat, 14 Jan 2006 13:42:41 +0300 [thread overview]
Message-ID: <43C8D5A1.5070004@tls.msk.ru> (raw)
In-Reply-To: <43C8B5A5.5010500@fastmail.co.uk>
Max Waterman wrote:
[]
> My preference will probably be raid10 - ie raid0 2 drives, raid0
> another 2 drives, and then raid1 both raid0s. My 5th disk can be a hot
> spare. Round reasonable?
Nononono. Never do that. Instead, create two raid1s and raid0
both, ie, just the opposite. Think about the two variants, and
I hope you'll come to the reason why raid0(2x raid1) is more
reliable than raid1(2x raid0). ;)
> Alternatively, we could probably get a 6th disk and do raid1 on
> disk #5 & #6 and install the OS on that - keeping the application
> data separate. This would be ideal, I think. For some reason, I like
> to keep os separate from application data.
BTW, there's a raid10 module in current 2.6 kernels, which works
somewhat differently compared with raid0(2x raid1) etc.
/mjt
next prev parent reply other threads:[~2006-01-14 10:42 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-13 7:06 md faster than h/w? Max Waterman
2006-01-13 14:46 ` Ross Vandegrift
2006-01-13 21:08 ` Lajber Zoltan
2006-01-14 1:19 ` Max Waterman
2006-01-14 2:05 ` Ross Vandegrift
2006-01-14 8:26 ` Max Waterman
2006-01-14 10:42 ` Michael Tokarev [this message]
2006-01-14 11:48 ` Max Waterman
2006-01-14 18:14 ` Mark Hahn
2006-01-14 1:22 ` Max Waterman
2006-01-14 6:40 ` Mark Hahn
2006-01-14 8:54 ` Max Waterman
2006-01-14 21:23 ` Ross Vandegrift
2006-01-16 4:37 ` Max Waterman
2006-01-16 5:33 ` Max Waterman
2006-01-16 14:12 ` Andargor
2006-01-17 9:18 ` Max Waterman
2006-01-17 17:09 ` Andargor
2006-01-18 4:43 ` Max Waterman
2006-01-16 6:31 ` Max Waterman
2006-01-16 13:30 ` Ric Wheeler
2006-01-16 14:08 ` Mark Hahn
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