I recently set up a Raid-z array in FreeNAS 0.7, that will connect to my computers through a gigabit network. I'm using 5x2tb western digital eads drives.
I ran atto on the array to test read/write speeds, and they were quite a bit lower than I expected (about 30-40mb/s write, 40-70mb/s read).
To make sure it wasn't a network issue, I ran the same test on a single SATA drive in the same file server that wasn't set up as part of the array, and got much better speeds.
Now, I wasn't expecting the world with Raid-Z in terms of speed, but it's my understanding that performance should at least be better than a single drive, and should come fairly close to maxing out my gigabit network.
The hardware I'm using for the server is a core i3 processor with 4gb ram, so that shouldn't be bottlenecking things at all.
So what's the slowdown here?
I ran atto on the array to test read/write speeds, and they were quite a bit lower than I expected (about 30-40mb/s write, 40-70mb/s read).
To make sure it wasn't a network issue, I ran the same test on a single SATA drive in the same file server that wasn't set up as part of the array, and got much better speeds.
Now, I wasn't expecting the world with Raid-Z in terms of speed, but it's my understanding that performance should at least be better than a single drive, and should come fairly close to maxing out my gigabit network.
The hardware I'm using for the server is a core i3 processor with 4gb ram, so that shouldn't be bottlenecking things at all.
So what's the slowdown here?