I'm testing the new asynch commit feature on various raid configurations and my early findings is that it reduces the impact of keeping wal and data on the same volume. I have 10 disks to play with, and am finding that it's faster to do a 10 drive raid 10 rather than 8 drive raid 10 + two drive wal. anybody curious about the results, feel free to drop a line. I think this will be a popular feature. merlin ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org