Date: Fri, 19 Mar 2004 01:36:22 +0100 (CET) From: Olaf Hoyer <ohoyer@ohoyer.de> To: Simon <simon@optinet.com> Cc: Olaf Hoyer <ohoyer@ohoyer.de> Subject: Re: Multiprocessor system VS one processor system Message-ID: <20040319013145.P44321@gaff.hhhr.ision.net> In-Reply-To: <20040318232348.BE86443D2D@mx1.FreeBSD.org>
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On Thu, 18 Mar 2004, Simon wrote: > > What exactly is not easily achievable with a modern dual Xeon Intel server > with 20 modern SCSI harddrives and proper RAID card? that is on an old > E450 Sparc? have you personally done any testing to back this up? surely, > the chipset design of Intel boards are not up-to-par with latest Sun servers, > but Intel is catching up. There was just never enough demand until now. Yes, its an E450 with 4x400MHZ Ultrasparc 2, IIRC with 2 or 4MB 2nd level cache, acting as mail server, pumping several millions of emails around per day, with 2 million mailboxes to deliver to, being one of several mailhosts. You simply need the 5 SCSI busses and 18 spindles (2 for OS) for mailspool performance, and the stability of the hardware and the scalability of Solaris under high stress and load. Thats a region where a i386-based box won't fit easily, also the diagnostics regarding flaky RAM or CPU are way better with SUN than with most i386-based hardware. We did some test with a 480 with external storages, therefore less SCSI-busses. The 480 clearly lost. > > -Simon > Olaf -- Olaf Hoyer ohoyer@gaff.hhhr.ision.net Fuerchterliche Erlebniss geben zu raten, ob der, welcher sie erlebt, nicht etwas Fuerchterliches ist. (Nietzsche, Jenseits von Gut und Boese)help
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