Date: Tue, 31 Aug 2004 12:24:01 +0200 From: Gernot Hueber <hueber@riic.at> To: Josh Paetzel <josh@tcbug.org> Cc: isp@freebsd.org Subject: Re: Performance RAID setup... Message-ID: <20040831102401.GQ31265@hanni.riic.uni-linz.ac.at> In-Reply-To: <200408261514.15896.josh@tcbug.org> (from josh@tcbug.org on Thu, Aug 26, 2004 at 22:14:15 %2B0200) References: <GMEEINAOJAINFLGLEJNFCEODCJAA.mitch@bitblock.com> <412E35B2.7080003@mac.com> <200408261514.15896.josh@tcbug.org>
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Hello, On 2004.08.26 22:14, Josh Paetzel wrote: > On Thursday 26 August 2004 14:10, you wrote: > > Mitch (bitblock) wrote: > > [ ... ] > > > > > One floating consideration is the hard drive configuration and > > > the relative performance. > > > > > > I could go with 6 73GB 15000 RPM drives in two RAID 5 sets, or I > > > could go with 6 146GB 10000RPM drives in RAID mirrors. > > > > > > The goal is to provide a NFS / SAMBA server for 4 - 20 > > > application servers. > > > > > > Anyone have any value for dollar comments? > > > > Unless your volumes are read-only, or close to it, RAID-10 (or > > "-1,0") will give you significantly better write performance than > > RAID-5. You might also give small SAN devices a thought; in > > particular, the Xserve RAID box has a very good price/performance > > point. > > > > I don't have experience with the SRCU42L SCSI controller, so you > > might want to do a search about it and FreeBSD, and/or ask your > > vendor. > I had problems with storcon utility (FreeBSD 5.2 Release) The controller is a SRCZCR (I hope), which is not detected by the tool. Other models work perfectly. Additionally I mentioned If you add a new volume online, it will not be recognised by the OS. I had to reboot. Last thing: use 2 power supplies (of course you will), they will die too often. regards Gernot -- Dipl.-Ing. Gernot Hueber Institut f. Integrierte Schaltungen Altenbergerstr. 69 4040 Linz Tel: +43 732 2468-7120, Fax: -7126 E-mail: hueber@riic.at WWW: www.riic.at
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