PERC 5/E SAS RAID in Dell PowerEdge 1950/2950

[John Baldwin]

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