On 03/23/12 10:05 AM, Tony Mountifield wrote: > Would I see much difference in performance or CPU load between SAS > and SATA disks of the same geometry and RPM speed? Such as Seagate > Constellation drives, which are available in SAS or SATA. SAS disks tend to do better under high concurrency, and support dual porting. whether or not this matters with a simple mirror, I dunno. -- john r pierce N 37, W 122 santa cruz ca mid-left coast