FreeBSD <[EMAIL PROTECTED]> wrote: > Maciej Suszko a écrit : > > I think about buying Dell PE2950 with SAS 6/iR integrated RAID > > controller. It would be double Intel Quad Core Xeon E5420 with 3.5" > > SAS 15k RPM disks connected to SAS 6/iR RAID controller. > > > > I'm curious if anyone is running FreeBSD-7.0-RELEASE on such machine > > and if there any problems with this controller - is SAS 6/iR > > supported by mpt or mfi? Anyone happily using it? > > > I never tried SAS 6 but I have SAS 5 in a few Dell servers and it's > performance is horrible. I tried some tips I read to optimize the > performance but none worked (I must admit that I didn't tried that > hard but still...). Just to compare, I have the exact same disk (the > same 3,5" SAS 15K that you plan to buy) in a PowerEdge 860 with SAS 5 > and in a PowerEdge 1950 with PERC5 (both in RAID 1) and the > performance are like day and night (tested with dbench): > SAS 5: Throughput 98.9811 MB/sec 4 procs > PERC5: Throughput 321.704 MB/sec 4 procs > > The last server I bought is a PowerEdge 840 with PERC5 but this time > with 7200RPM SATA drives (3 in RAID 5) and the performance is still > impressive : Throughput 266.81 MB/sec 4 procs > > I highly recommand upgrading to the PERC controller. > > SAS5 is recognized by the mpt driver and PERC5 by mfi. > > YMMV, > > Martin
Thanks for reply Martin, I think I'm not gonna take the risk and I stay with PERC5 controller. Have you used integrated PERC5 or external one? And one more question - how about controller monitoring - there is a sysutils/linux-megacli, have you tested it? Is it working with your PERC? -- regards, Maciej Suszko.
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