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Date:      Thu, 17 Dec 1998 22:08:42 -0500
From:      Dan Swartzendruber <dswartz@druber.com>
To:        Greg Lehey <grog@lemis.com>
Cc:        Matthew Patton <patton@sysnet.net>, freebsd-isp@FreeBSD.ORG
Subject:   Re: RAID solutions?
Message-ID:  <3.0.5.32.19981217220842.009d5cf0@mail.kersur.net>
In-Reply-To: <19981218133502.Q486@freebie.lemis.com>
References:  <3.0.5.32.19981217220152.009c6100@mail.kersur.net> <l03110705b29e428c72d1@[192.168.1.10]> <3.0.5.32.19981215231329.00966ae0@mail.kersur.net> <l03110705b29e428c72d1@[192.168.1.10]> <19981218131434.M486@freebie.lemis.com> <3.0.5.32.19981217220152.009c6100@mail.kersur.net>

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At 01:35 PM 12/18/98 +1030, Greg Lehey wrote:
>On Thursday, 17 December 1998 at 22:01:52 -0500, Dan Swartzendruber wrote:
>>
>> Greg, are there any performance ramifications with RAID5?  When not in
>> degraded mode, of course...
>
>Yes, big ones.  Every write in normal mode requires at least one
>additional I/O to the parity block.  

That's what I wondered about.  Probably not worth it for a news spool...




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