The machine is coming from dell, and i have the option of a PERC 3/SC RAID Controller (32MB) or software raid.
does anyone have any experience of this controller? its an additional £345 for this controller, i'd be interested to know what people think - my other option is to buy the raid controller separately, which appeals to me but i wouldnt know what to look for in a raid controller. that raid controller review site sounds like a good idea :) Richard. On Friday 12 September 2003 4:24 pm, Christopher Browne wrote: > [EMAIL PROTECTED] (Richard Jones) writes: > > I have some new hardware on the way and would like some advice on > > how to get the most out of it.. > > > > its a dual xeon 2.4, 4gb ram and 3x identical 15k rpm scsi disks > > > > should i mirror 2 of the disks for postgres data, and use the 3rd > > disk for the o/s and the pg logs or raid5 the 3 disks or even stripe > > 2 disks for pg and use the 3rd for o/s,logs,backups ? > > > > the machine will be dealing with lots of inserts, basically as many > > as we can throw at it > > Having WAL on a separate drive from the database would be something of > a win. I'd buy that 1 disk for OS+WAL and then RAID [something] > across the other two drives for the database would be pretty helpful. > > After doing some [loose] benchmarking, the VERY best way to improve > performance would involve a RAID controller with battery-backed cache. > > On a box with similar configuration to yours, it took ~3h for a > particular set of data to load; on another one with battery-backed > cache (and a dozen fast SCSI drives :-)), the same data took as little > as 6 minutes to load. The BIG effect seemed to come from the > controller. ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]