On Fri, Feb 24, 2012 at 08:16:27PM -0500, Richard Pieri wrote: > On Feb 24, 2012, at 7:41 PM, Richard Pieri wrote: > > > > ashift=12 (4K alignment) and recreated my RAID-Z pool. The result: > > sustained write performance has gone from 10MB/s to 30MB/s. Not a bad gain > > for a simple fix (and a few hours of digging for it :). > > I must correct myself. That 30MB/s figure appears to be the I/O limit on the > USB disk dock that I'm using to restore my ZFS snapshots. A restore (zfs > receive) along with the command "dd if=/dev/zero of=zero bs=4k" to the same > pool is showing sustained 60MB/s write performance (20MB/s per spindle). > > I need to figure out how to get the eSATA port on the disk dock working. :)
Search for N40L bios mods. There are ones that enable full AHCI use of the 5th internal SATA (optical disc drive) port and the eSATA port. I haven't tried it yet myself. _______________________________________________ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
