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.)
Mike Stone
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