I'm having some performance issues on my home backup FreeNas box using a raidz2 configuration and I am wondering what might be causing it (not enough processing power, eco drives?).
- Freenas 8.3.1
- ASUS E35M1-I (Hudson M1)
- 8GB ram (DDR3 1066)
- 6 x 2TB drives (mix WD Cavier green 5900s, Seagate Green 5900s)
dd if=/dev/zero of=/mnt/beast/test/ddfile bs=2048k count=10000 20971520000 bytes transferred in 146.161146 secs (143482181 bytes/sec) 20971520000 bytes transferred in 166.954361 secs (125612292 bytes/sec)
dd of=/dev/null if=/mnt/beast/test/ddfile bs=2048k count=10000 20971520000 bytes transferred in 85.232895 secs (246049603 bytes/sec) 20971520000 bytes transferred in 73.342644 secs (285938968 bytes/sec)
It seems 2 to 3x slower than other benchmarks I've seen posted for Raidz2. Any ideas why or how I might improve performance?