Date: Tue, 22 Aug 2000 10:09:19 -0700 (PDT) From: Jin Guojun (DSD staff) <jin@george.lbl.gov> To: freebsd-hardware@FreeBSD.ORG, yusufg@outblaze.com Subject: Re: RAID-0 over 2 disks or one single disk Message-ID: <200008221709.e7MH9Js06003@portnoy.lbl.gov>
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Yusuf Goolamabbas <yusufg@outblaze.com> wrote: > Hi, I am looking at setting up a relatively cheap/fast box and I wanted > to know whether it makes more sense buying 2 15GB IBM 75GXP drives > striped RAID-0 via a 3ware 6200 controller or just buy one 30GB IBM > 75GXP > > The 15GB IBM 75GXP is approx $100 whereas the 30GB is approx $150. The > 3ware should be approx be around $150. Would appreciate your thoughts on > this ? Is there some cutover point at which RAID-0 gets better than a > single drive ? > > Regards, Yusuf Sounds like your configuration is $350 (2x15GB + 3ware) v.s. $150 (30GB) = 2.3, the throughput will be 170% v.s. 100% = 1.7 with same capacity. The ratio is not much different, but the absolute money value is. Unless you real care about the throughput, $350 can buy two 30GB that gives you 60GB + extra $50. Stripping on two disks is not very meaningful. For getting better throughput, you may think to use more disks for stripping. Otherwise, stay with a single disk, save money and energy. Just my thought, -Jin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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