Re: SCSI vs SATA
От | Andreas Kostyrka |
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Тема | Re: SCSI vs SATA |
Дата | |
Msg-id | 20070404154305.GA25764@andi-lap.la.revver.com обсуждение исходный текст |
Ответ на | Re: SCSI vs SATA ("Joshua D. Drake" <jd@commandprompt.com>) |
Ответы |
Re: SCSI vs SATA
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Список | pgsql-performance |
* Joshua D. Drake <jd@commandprompt.com> [070404 17:40]: > > >Good point. On another note, I am wondering why nobody's brought up the command-queuing perf benefits (yet). Is this becausesata vs scsi are at > > SATAII has similar features. > > >par here? I'm finding conflicting information on this -- some calling sata's ncq mostly crap, others stating the real-worldresults are negligible. I'm inclined to believe SCSI's > >pretty far ahead here but am having trouble finding recent articles on this. > > What I find is, a bunch of geeks sit in a room and squabble about a few percentages one way or the other. One side feelsvery l33t because their white paper looks like the latest > swimsuit edition. > > Real world specs and real world performance shows that SATAII performs, very, very well. It is kind of like X86. No chipengineer that I know has ever said, X86 is elegant but guess > which chip design is conquering all others in the general and enterprise marketplace? Actually, to second that, we did have very similiar servers with SCSI/SATA drives, and I did not notice any relevant measurable difference. OTOH, the SCSI discs were way less reliable than the SATA discs, that might have been bad luck. Andreas
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