Date: Tue, 14 Jun 2005 14:08:19 -0600 From: "Chad Leigh -- Shire.Net LLC" <chad@shire.net> To: D. Goss <lists@dylangoss.com> Cc: FreeBSD questions <freebsd-questions@freebsd.org> Subject: Re: 36.4GB drive formats out to 32.8GB? what am I missing please grep sectors /var/run/dmesg.boot Message-ID: <9E1E81DA-ACD7-4B0A-A331-3911A2500248@shire.net> In-Reply-To: <C4C71B55-ACDA-4F89-A4FF-0F901B66CA4C@dylangoss.com> References: <1122F428-95E6-4680-AB38-86A5A5B0F91A@dylangoss.com> <Pine.NEB.4.62.0506141744001.18067@chylonia.3miasto.net> <C4C71B55-ACDA-4F89-A4FF-0F901B66CA4C@dylangoss.com>
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On Jun 14, 2005, at 11:51 AM, D. Goss wrote: > On Jun 14, 2005, at 8:48 AM, Wojciech Puchar wrote: > > >> >> think twice before making RAID-5 array. are you sure small writes >> will not be too common? >> > > No, you are on to something - I will be making small writes / > parity calculations. This is going to be a web server but it is > for clients and they do have sites running with SQL backends and > not just static HTML content. > > >> i think buying 4 80GB FAST IDE/SATA drives and arranging it as >> RAID-10 will give you 160GB of FAST and protected storage. >> performance gain using mirror+strip will likely offset this of >> using faster 15k rpm drives. >> >> and it will be for sure cheaper. you may put 6 drives (RAID-10) >> and even larger drives and still have cheaper alternative and even >> faster. and MUCH more space. >> > > Sure, it will be cheaper. For me it's too late, I've purchased the > 4 x SCSI 15k drives I need for this project. I have bought mostly > unopened, in-box but secondhand IBM drives/sleds. They are still > expensive but certainly not the (what I consider) insane prices for > the same drives IBM direct. I'm paying around 1/3 of "list". The SCSI disks will certainly last longer. If you can do the RAID 1 +0 with the SCSI you will probably be that much further ahead... Chad
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