Date: Fri, 20 Sep 1996 09:21:17 +0200 From: Stefan Grefen <grefen@carpe.net> To: "David E. Tweten" <tweten@frihet.com> Cc: FREEBSD-SCSI-L <freebsd-scsi@freebsd.org>, FREEBSD-CURRENT-L <freebsd-current@freebsd.org>, FREEBSD-ISP-L <freebsd-isp@freebsd.org> Subject: Re: Streamlogic RAID array benchmarks Message-ID: <6407.843204077@hex.grefen.carpe.net> In-Reply-To: "David E. Tweten"'s message <199609191729.KAA06675@ns.frihet.com> of Thu, 19 Sep 96 10:29:20 PDT. References: <199609191729.KAA06675@ns.frihet.com>
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In message <199609191729.KAA06675@ns.frihet.com> "David E. Tweten" wrote: > grefen@carpe.net said: > >I assume from your statements that they use the 3 disks as "Data > >Data Parity" not as a 'true' RAID 5 "Data Data Data Data Parity" > >(this would have other side effects too). > > If I read this right, it is an interesting, though incorrect, > interpretation of the meaning of the various levels of RAID. It didn't wanted to imply that the parity is always on the same disk. As "Data Data Data Data Parity" on a 3 disk system rotes the parity through the disks !!. [...] Stefan -- Stefan Grefen Am Grossberg 16, 55130 Mainz, Germany grefen@carpe.net +49 6131 998566 Fax:+49 6131 998568 Living on Earth may be expensive, but it includes an annual free trip around the Sun.
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