I''ve finally gotten around to upgrading my ZFS file server to build 72 and I must say I''m impressed with the performance boost provided by the new nVidia SATA driver. I had noticed a drop in bonnie++ performance once the pool started to fill up, but with the new drive its is better than the original fresh performance. With a stripe of 4 2 way mirrors (Seagate320GB 16M drives) block write is now 270MB/s (up from 228) and block read 428MB/s (up from 296). Ian