Date: Thu, 10 Aug 2006 16:38:09 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-hardware@freebsd.org Cc: Bucky Jordan <bjordan@lumeta.com> Subject: Re: PERC 5/E SAS RAID in Dell PowerEdge 1950/2950 Message-ID: <200608101638.10127.jhb@freebsd.org> In-Reply-To: <78ED28FACE63744386D68D8A9D1CF5D410496E@MAIL.corp.lumeta.com> References: <78ED28FACE63744386D68D8A9D1CF5D410496E@MAIL.corp.lumeta.com>
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On Thursday 10 August 2006 14:31, Bucky Jordan wrote: > 3. So initial conclusion was Perc5/I is crappy about multi levels of > raid (10, 0+1, etc). However, a coworker suggested I test on Knoppix 5. > Here's the results: > RAID5 (x4 disks) > ~270 MB/s with dd on ext2 (very close to theoretical max) I can't help you on the performance stuff, though you might ask Scott Long (scottl@) as he had some suggestions. Apparently a newer mfi(4) firmware performs poorer with FreeBSD for reasons as yet unknown. > 4. During testing, I tried installing BSD on disk0, then setting up a > RAID0 on disks 2 & 3, and a RAID1 on disks 4 & 5 for testing basic raid > performance. Unfortunately, BSD was unable to recognize the other > volumes. In dmesg, I would see mfid0, mifid1, and mfid2, but when I > would try to mount them using sysinstall and the instructions in the > handbook, FDisk did not see the correct sizes. Furthermore, I think it > always pointed to mfid0. More specifically This should be fixed in 6-stable. -- John Baldwin
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