On Tue, 2006-09-12 at 15:25 -0500, Les Mikesell wrote: > If the disks are scsi the writes happen pretty much in parallel and > you only read one copy when you read. It should only slow you down > if you are using 2 ide drives on the same controller for the mirrors > in which case you have to wait for one write to complete before > the other starts. > They are SATA. My original thinking today was that performance would be better if I had 2 swap partitions: /dev/sda2, /dev/sdb2 set at the same priority so that *different* pages could be swapped simultaneously to/from the 2 drives. But as Matt pointed out, that would be less robust. -Steve