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Date:      Fri, 19 Nov 1999 18:56:38 +0100 (CET)
From:      Wilko Bulte <wilko@yedi.iaf.nl>
To:        grog@lemis.com
Cc:        shimon@simon-shapiro.org, ticso@cicely.de, pantzer@ludd.luth.se, freebsd-fs@FreeBSD.ORG
Subject:   Re: RAID-5 and failure
Message-ID:  <199911191756.SAA54750@yedi.iaf.nl>
In-Reply-To: <19991119101720.35872@mojave.sitaranetworks.com> from Greg Lehey at "Nov 19, 1999 10:17:20 am"

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As Greg Lehey wrote ...
> On Thursday, 18 November 1999 at 23:38:52 -0500, Simon Shapiro wrote:
> > Bernd Walter wrote:
> >>
> >> I asume that's the reason why some systems use 520 byte sectors - maybe they
> >> write timestamps or generationnumbers in a single write within the sector.
> >
> > 528.  512 data, 16 ECC for the sector.  Nothing to do with RAID.
> 
> There are various sizes.  I've had surplus disks with 516 and 520 byte
> sectors.  But yes, they're usually under hardware control.

I've also seen 518 once.

-- 
|   / o / /  _  	Arnhem, The Netherlands	  - Powered by FreeBSD -
|/|/ / / /( (_) Bulte 	WWW : http://www.tcja.nl  http://www.freebsd.org


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