Re: SCSI vs SATA
От | jason@ohloh.net |
---|---|
Тема | Re: SCSI vs SATA |
Дата | |
Msg-id | 3C1520FD-DE3B-4A16-A7BA-74489D4CC89D@ohloh.net обсуждение исходный текст |
Ответ на | Re: SCSI vs SATA (Ron <rjpeace@earthlink.net>) |
Ответы |
Re: SCSI vs SATA
("Joshua D. Drake" <jd@commandprompt.com>)
Re: SCSI vs SATA ("Alex Deucher" <alexdeucher@gmail.com>) Re: SCSI vs SATA (Arjen van der Meijden <acmmailing@tweakers.net>) Re: SCSI vs SATA (david@lang.hm) |
Список | pgsql-performance |
On Apr 5, 2007, at 4:09 AM, Ron wrote: > BE VERY WARY OF USING AN ADAPTEC RAID CONTROLLER! Thanks - I received similar private emails with the same advice. I will change the controller to a LSI MegaRAID SAS 8408E -- any feedback on this one? > > IME, they are usually the worst of the commodity RAID controllers > available. > I've often seen SW RAID outperform them. > > If you are going to use this config, Tyan's n3600M (AKA S2932) MB > has a variant that comes with 8 SAS + 6 SATA II connectors. > The SKU is S2932WG2NR. > http://www.tyan.us/product_board_detail.aspx?pid=453 I plan on leveraging the battery backed module so onboard sas isn't a priority for me. > I'm using this beast (Dual Socket F, AMD Barcelona ready, 16 DIMMS > supporting up to 64GB of ECC RAM, 2 PCI-Ex16 slots w/ PCI-Ex8 > signalling, etc: > ~$450 US w/o SAS, ~$500 US w/ SAS) for my most recent pg 8.2.3 > build on top of XFS. I'm curious to know why you're on xfs (i've been too chicken to stray from ext3). > If the on board RAID is or becomes inadequate to your needs, I'd > strongly suggest either 3ware or Areca RAID controllers. I don't know why, but my last attempt at using an areca 1120 w/ linux on amd64 (and > 4gb ram) was disastrous - i will never use them again. 3ware's been rock solid for us. > > Side Note: > What kind of HDs are the 8*73GB ones? If they are the new 2.5" > Savvio 15Ks, be =VERY= careful about having proper power and > cooling for them. > 14 HD's in one case are going to have a serious transient load on > system start up and (especially with those SAS HDs) can generate a > great deal of heat. I went w/ Fujitsu. Fortunately these servers are hosted in a very well ventilated area so i am not that concerned with heat issues. > > What 16bay 3U server are you using? supermicro sc836tq-r800 http://www.supermicro.com/products/chassis/3U/836/SC836TQ-R800V.cfm Thanks for all the help!
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