I've been toiling for the last two evenings on my SX6000. An exchange of correspondance with Laird_Williams put me on the right path. The "missing link" was the BIOS. I was still using version 4.01 that shipped with the board. I upgraded to the current 4.03 version. It seems the SX6000 can't work with version 4.01 of the BIOS. After the BIOS upgrade, I put the SX6000 back and I managed to format a 5-disks RAID5 array for testing purpose. So far the benchmarks are quite disappointing: 22MB/sec in writing and 12 MB/sec in reading. I couldn't make the Promise Array Manager tool work on my workstation. I'll have to do some tweaking over the week-end... Tonight I'll put back my Adaptec 29160 and I'll see if it plays nice with the SX6000. If it does, I'll wipe out the array and create a new one with the sixth disk I just replaced yesterday (while creating the array originally, it always froze on initialization at 10%). I'll have at last my long-needed 6-disks RAID5 array. I won't run out of space while editing the videos I shot while on holidays.