zfs2 2 x Intel Xeon L5640 testing with a Supermicro X8DTT-H v2.0 and Matrox MGA G200eW WPCM450 on CentOS 6.2 (Final) via the Phoronix Test Suite. zfs1 with log mirror SSD: Processor: 2 x Intel Xeon L5640 @ 2.27GHz (24 Cores), Motherboard: Supermicro X8DTT-H v2.0, Chipset: Intel 5500 I/O + ICH10R, Memory: 64512MB, Disk: 2 x 250GB Hitachi HDT722525DLA380 + 32GB SSDSA2SH032G1GN, Graphics: Matrox MGA G200eW WPCM450, Network: Intel 82574L Gigabit Connection OS: CentOS 6.2 (Final), Kernel: 3.5.0-testsan+ (x86_64), Compiler: GCC 4.4.6 20110731, File-System: nfs Unpacking The Linux Kernel linux-2.6.32.tar.bz2 Seconds < Lower Is Better zfs1 with log mirror SSD . 1683.74 |========================================= zfs1 with log mirror SSD . 1786.00 |=========================================== PostMark 1.51 Disk Transaction Performance TPS > Higher Is Better zfs1 with log mirror SSD . 16 |================================= zfs1 with log mirror SSD . 23 |================================================