Date: Thu, 30 Aug 2007 13:10:37 -0700 From: Ulf Zimmermann <ulf@Alameda.net> To: Eric Anderson <anderson@freebsd.org> Cc: FREEBSD - SCSI - LIST <freebsd-scsi@freebsd.org> Subject: Re: performance with LSI SAS 1064 Message-ID: <20070830201037.GR824@evil.alameda.net> In-Reply-To: <46D6CBA2.8000703@freebsd.org> References: <71d0ebb0708291245g79d2141fx73cc8a6e76875944@mail.gmail.com> <46D5E17F.3070403@samsco.org> <71d0ebb0708291416v17351c65u7ccc1b7bbe0271d2@mail.gmail.com> <46D5E5B1.207@samsco.org> <71d0ebb0708291506i49649a60l8006deafb20891ac@mail.gmail.com> <46D63710.1020103@freebsd.org> <46D64020.3000503@samsco.org> <46D6C8C2.3000504@freebsd.org> <46D6CA91.3080707@samsco.org> <46D6CBA2.8000703@freebsd.org>
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On Thu, Aug 30, 2007 at 08:52:34AM -0500, Eric Anderson wrote: > >Ah, I didn't know that Seagate made 15k drives in the 2.5" form factor, > >I was expecting just 7200 or 10k. > > They are the only ones to my knowledge. These little drives are *FAST*. > > Eric HP brands the Seagate ones, there are 2.5" SAS 36GB and 72GB, both in 10K and 15K and then 146GB in 10K currently (at least what HP sells). I have been seeing on Raid 5 and Raid 6 ADG via HP P400 and P800 controllers as much as 180MB/sec during large writes on 4 and 6 drive arrays. I was impressed when I first got my initial servers with SAS. But under Linux I have seen lately some issues I need to check more. Wished I could run more FreeBSD though :-/ -- Regards, Ulf. --------------------------------------------------------------------- Ulf Zimmermann, 1525 Pacific Ave., Alameda, CA-94501, #: 510-865-0204 You can find my resume at: http://www.Alameda.net/~ulf/resume.html
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