On Mon, 2006-12-04 at 11:43, Michael Stone wrote: > On Mon, Dec 04, 2006 at 12:37:29PM -0500, Alex Turner wrote: > >This discussion I think is important, as I think it would be useful for this > >list to have a list of RAID cards that _do_ work well under Linux/BSD for > >people as recommended hardware for Postgresql. So far, all I can recommend > >is what I've found to be good, which is 3ware 9500 series cards with 10k > >SATA drives. Throughput was great until you reached higher levels of RAID > >10 (the bonnie++ mark I posted showed write speed is a bit slow). But that > >doesn't solve the problem for SCSI. What cards in the SCSI arena solve the > >problem optimally? Why should we settle for sub-optimal performance in SCSI > >when there are a number of almost optimally performing cards in the SATA > >world (Areca, 3Ware/AMCC, LSI). > > Well, one factor is to be more precise about what you're looking for; a > HBA != RAID controller, and you may be comparing apples and oranges. (If > you have an external array with an onboard controller you probably want > a simple HBA rather than a RAID controller.) I think he's been pretty clear. He's just talking about SCSI based RAID controllers is all.
