So I've got a FreeNAS system I built. 3 2TB WD hard drives, AMD X2 5000+ processor, 3GB of RAM, PCIe Gigabit card.
The file system is ZFS, in a RAID5ish array, with encryption.
My write operations over NFS and SMB are sporadic. I get about 35 MB/s average, but looking at the network graph, it spikes to really high lvesl, then drops off.
Reads are actually slower, around 20 MB/s, when I copy data off.
This is measured from my Windows 7 workstation. The left part of the graph represents copying a single 4 GB file from my Workstation to the FreeNAS server. It spikes to about 700 Mb/s, which is about 87 MB/s.
The right part of the graph represents copying that same file back. That is more consistent, about 140 Mb/s, or 17 MB/s.
I know encrypted RAID5 is going to slow down writes (and even reads with encryption) but this doesn't seem quite right.
The file system is ZFS, in a RAID5ish array, with encryption.
My write operations over NFS and SMB are sporadic. I get about 35 MB/s average, but looking at the network graph, it spikes to really high lvesl, then drops off.
Reads are actually slower, around 20 MB/s, when I copy data off.
This is measured from my Windows 7 workstation. The left part of the graph represents copying a single 4 GB file from my Workstation to the FreeNAS server. It spikes to about 700 Mb/s, which is about 87 MB/s.
The right part of the graph represents copying that same file back. That is more consistent, about 140 Mb/s, or 17 MB/s.
I know encrypted RAID5 is going to slow down writes (and even reads with encryption) but this doesn't seem quite right.