Alexander Priem kirjutas E, 20.10.2003 kell 15:29: > Thanks for your reply, Jeff. > > If we are going to use a NAS device for storage, then it will be attached > through a gigabit ethernet connection. Fiber will not be an option, since > that would negate the savings we can make by using an IDE NAS device instead > of SCSI-RAID, fiber's pretty expensive, right? > > Using a NAS device (that is used only by PostgreSQL, so it's dedicated) with > 3Gb of RAM and four 7200 rpm IDE harddisks, connected using a gigabit > ethernet connection to the PostgreSQL server, do you think it will be a > match for a SCSI-RAID config using 4 or 6 15000rpm disks (RAID-10) through a > SCSI-RAID controller having 128mb of writeback cache (battery-backed)?
I sincerely don't know. But if NAS is something that involves TCP (like iSCSI) then you should take a look at some network card and TCP/IP stack that offloads the protocol processing to the coprocessor on network card. (or just have some extra processors free to do the protocol processing ) --------------- Hannu ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
