Date: Tue, 06 Dec 2005 18:15:01 +0200 From: Petri Helenius <pete@he.iki.fi> To: Mike Tancsa <mike@sentex.net> Cc: Michael VInce <mv@roq.com>, freebsd-performance@freebsd.org Subject: Re: SATA: RAID 5 controller recommendations Message-ID: <4395B905.9090308@he.iki.fi> In-Reply-To: <6.2.3.4.0.20051102222452.0564eda0@64.7.153.2> References: <000801c5d434$579de280$b3db87d4@multiplay.co.uk> <000801c5d434$579de280$b3db87d4@multiplay.co.uk> <3.0.1.32.20051102022618.00a73dc0@pop.redshift.com> <436896BD.6090405@multiwise.fi> <436972DE.8070002@roq.com> <6.2.3.4.0.20051102222452.0564eda0@64.7.153.2>
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Mike Tancsa wrote: > At 09:15 PM 02/11/2005, Michael VInce wrote: > >> I have seen some network based SMP related performance problems >> vanish in 6.0 tests, admittedly I haven't done hard drive based tests >> but I wouldn't surprise me of performance drops on HDs in SMP on 6.0 >> are gone as well. > > > Yes, I noticed that well. Unfortunately I seem to have a bad drive as > well so I will have to try swapping it tomorrow. Although it might > just be a cable / connector issue as smartmontools doesnt see anything > on the drive. > Has the 3ware patchset for smartmontools been integrated into the port? Pete > da0: <AMCC 9550SX-4LP DISK 3.01> Fixed Direct Access SCSI-3 device > da0: 100.000MB/s transfers > da0: 343290MB (703057920 512 byte sectors: 255H 63S/T 43763C) > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0009): Drive timeout detected: port=0 > twa0: ERROR: (0x04: 0x0002): Degraded unit: unit=0, port=0 > > >> Mike >> >> >> Markus Kovero wrote: >> >>> Dell's CERC sata raid thingy works fast for me but when I turn SMP >>> on read performance drops 50%+ (raid1,raid5,raid10 and single >>> volumes). >>> I don't know if its aac problem or what. >>> In leenox it works very well though. >>> >>> Yours >>> Markus Kovero >>> >>> ray@redshift.com wrote: >>> >>>> At 09:17 PM 11/2/2005 +1100, Michael VInce wrote: >>>> | For SATA I have always been getting the Dell 750s (now 850s) >>>> which use | the 'aac' >>>> | Adaptec AdvancedRAID Controller driver, do 'man aac' for more >>>> details. >>>> | Dell supply them with a 64meg cache and are hardware raid, I have >>>> always | just installed FreeBSD on them and only 1 hard drive comes >>>> up as RAID | should be. >>>> | | I have only been ordering the machines in dual drive mirror 1 >>>> Raid, but | you could get a PowerEdge Tower servers like the 830 >>>> which do raid 5, I | never used one though. >>>> | Alternatively all the Dell SCSI RAID systems have 256megs cache >>>> which | use the LSI Logic MegaRAID ( man amr ) >>>> | Stay away from the ultra low end SC1425 systems they have some >>>> kind of | software based raid. >>>> | | The thing I have noticed is that if you compare other (often >>>> claiming to | be much cheaper) servers from other companies they >>>> often really skimp on | their hard drive subsystems with software >>>> based stuff claiming its RAID. >>>> | | I used to be anti Dell and build my own U1 servers from case >>>> and up and | had a keen interest in cheap RAID technologies but I >>>> gave up a little | while ago. >>>> | I believe Dell are great value when you consider their RAID | >>>> implementations and as long as you are happy with Intel chips. >>>> | | Mike >>>> | | Steven Hartland wrote: >>>> | | > Anyone got any SATA RAID 5 controllers they can recommend >>>> | > 64Bit PCIX. >>>> | > >>>> | > Steve >>>> >>>> Steve - 3ware is very good. >>>> >>>> Mike - I have some benchmarks from a guy using a Dell with a raid >>>> and was >>>> surprised to see how slow they were compared to our other hardware. >>>> I didn't >>>> run them myself, but the guy is on the list here some place. I can >>>> send you a >>>> copy of the spreadsheet if you want to look it over. >>>> >>>> Ray >>>> >>>> _______________________________________________ >>>> freebsd-performance@freebsd.org mailing list >>>> http://lists.freebsd.org/mailman/listinfo/freebsd-performance >>>> To unsubscribe, send any mail to >>>> "freebsd-performance-unsubscribe@freebsd.org" >>>> >> _______________________________________________ >> freebsd-performance@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-performance >> To unsubscribe, send any mail to >> "freebsd-performance-unsubscribe@freebsd.org" > > > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to > "freebsd-performance-unsubscribe@freebsd.org" >
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