Mark Mielke Wrote: >In my experience, software RAID 5 is horrible. Write performance can >decrease below the speed of one disk on its own, and read performance will >not be significantly more than RAID 1+0 as the number of stripes has only >increased from 2 to 3, and if reading while writing, you will not get 3X as >RAID 5 write requires at least two disks to be involved. I believe hardware >RAID 5 is also horrible, but since the hardware hides it from the >application, a hardware RAID 5 user might not care. >Software RAID 1+0 works fine on Linux with 4 disks. This is the setup I use >for my personal server. I will use software RAID so RAID 1+0 seems to be the obvious choice. Thanks for the advice! ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq