[Discuss] Adventures in N40L Land

[richard.pieri at gmail.com (Richard Pieri)]

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. :)

--Rich P.