From: William Thompson <wt@electro-mechanical.com>
To: David Brown <david.brown@hesbynett.no>
Cc: linux-raid@vger.kernel.org
Subject: Re: raid 10f2 vs 1 on 2 drives
Date: Wed, 23 May 2012 07:25:46 -0400 [thread overview]
Message-ID: <20120523112545.GN27769@electro-mechanical.com> (raw)
In-Reply-To: <4FBC14DC.8070007@hesbynett.no>
On Wed, May 23, 2012 at 12:36:12AM +0200, David Brown wrote:
> On 22/05/12 21:33, William Thompson wrote:
> >I understand that raid 10 f2 is slower on writes due to the location of the
> >2nd copy. My question is, if lots of writes are performed, could this
> >layout wearout the drives quicker than raid 1?
>
> No, wear is not going to be significantly different.
>
> You didn't say whether you are talking about hard disks (where
Sorry about that (Chief). Yes, I was refering to hard drives.
> location makes a difference, but "wear" on the drive motor is
> insignificant to the disk's expected lifetime), or flash disks
I was thinking about how much more head movement there would be to write the
2nd copy of the data.
> (where people often worry about "wear", though location is
> irrelevant and wear is also irrelevant for most uses of all but the
> most cheapo disks).
next prev parent reply other threads:[~2012-05-23 11:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-22 19:33 raid 10f2 vs 1 on 2 drives William Thompson
2012-05-22 22:36 ` David Brown
2012-05-23 11:25 ` William Thompson [this message]
2012-05-25 19:03 ` Bill Davidsen
2012-05-25 19:40 ` Roberto Spadim
2012-05-26 16:07 ` David Brown
2012-05-26 23:41 ` Bill Davidsen
2012-05-27 0:46 ` keld
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