Date: Wed, 29 May 2002 08:06:54 -0600 From: Scott Long <scott_long@btc.adaptec.com> To: "Philip J. Koenig" <pjklist@ekahuna.com> Cc: stable@freebsd.org Subject: Re: Hardware RAID vs vinum Message-ID: <20020529140654.GB2262@hollin.btc.adaptec.com> In-Reply-To: <20020529084340715.AAA489@empty1.ekahuna.com@pc02.ekahuna.com> References: <bulk.71597.20020528201728@hub.freebsd.org> <20020529084340715.AAA489@empty1.ekahuna.com@pc02.ekahuna.com>
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On Wed, May 29, 2002 at 01:43:42AM -0700, Philip J. Koenig wrote: > > Date: Tue, 28 May 2002 18:59:26 -0600 > > From: "Long, Scott" <Scott_Long@adaptec.com> > > > > > On Tuesday, 28 May 2002 at 13:04:19 -0700, Doug White wrote: > > > > On Tue, 28 May 2002, Greg 'groggy' Lehey wrote: > > > > > > > >> This can only happen if there's something very wrong with > > > the software > > > >> RAID-5, either the implementation or the configuration. One thing > > > >> that springs to mind is too small a stripe size. There's > > > a myth going > > > >> around that this improves performance, when in fact it seriously > > > >> degrades it. > > [...] > > > Greg, the companies that make RAID hardware are not filled with a > > bunch of idiots. > > > > Scott > > > Speaking of RAID hardware engineers, is that 5400 card that was > mentioned here earlier architecturally close to the 32xx/34xx DPT > designs now sold by Adaptec, or a new design? (I assume you inherited > most of DPT's engineers when you bought them) > > Actually now that I look at it, it must have diverged because it uses > a different driver.. The 5400S inherits very little from the DPT designs. It's actually the same architecture that we've been selling to Dell (under the PERC2/3 name) and HP (under the NetRAID-4M name) for a number of years. Scott To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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