Asus AT5NM10T-I Motherboard
Intel(R) Atom(TM) CPU D525 @ 1.80GHz
2x2GB DDR3 RAM
2x2TB WD Caviar Green WD20EARX
2x2TB Seagate Barracuda ST2000DL003
Does 66MBps write seem like reasonable local drive speeds for a zfs volume? They appear a pretty slow to me.
If so is there any tuning in FreeNAS that would directly impact (improve) read/write on a zfs volume?
On Atom D525 mobo with 2GB RAM and 4 ST2000DL003 configured as RAIDZ-1 i get 150MB/s write and 300 MB/s read.
Try setting record size to 64K:
Code:
zfs set recordsize=64K