Hi there,
I'm relatively new to the whole NAS thing, so bare with me.
I built myself a NAS box to use as a home server, i.e. fileserver, media server, backup.
Hardware:
MB/CPU: ASRock E350M1/USB3 with AMD E-350 CPU (2x1,8GHz)
RAM: 8GB Kingston ValueRAM
DISKS: 4x 2000GB Seagate Barracuda Green 5900.3
At first I only had three disks and everything was pretty smooth. Performance with CIFS was stable and around 70MB/s.
But yesterday I added the fourth disk, destroyed the ZFS Pool and created a new one (RAID-Z). Since then my CIFS performance is pretty much broken.
If I try to write a large file (~12GiB) to a CIFS share, the speed starts at 100MB/s, goes down to around 70MB/s and then stops completely for a couple of seconds. After it picks up again the speed floats around 30-40MB/s and completely stops every few seconds.
In Bandwith Monitor it looks something like this: http://goo.gl/8EZqI
Is there any way to improve performance?
Even if I try FTP oder NFS the same problem occours.
So...
a) Does the CPU have not enough power for a four disk raid-z?
b) Are there settings I can tweak the zfs pool with? I'm a huge noob and I don't even know how or where I could change those settings.
I appreciate every help I could get.
Thanks.
Edit: Some more graphs. http://goo.gl/Lg2iy
And I'm using the FreeNAS 8.2-beta4
I'm relatively new to the whole NAS thing, so bare with me.
I built myself a NAS box to use as a home server, i.e. fileserver, media server, backup.
Hardware:
MB/CPU: ASRock E350M1/USB3 with AMD E-350 CPU (2x1,8GHz)
RAM: 8GB Kingston ValueRAM
DISKS: 4x 2000GB Seagate Barracuda Green 5900.3
At first I only had three disks and everything was pretty smooth. Performance with CIFS was stable and around 70MB/s.
But yesterday I added the fourth disk, destroyed the ZFS Pool and created a new one (RAID-Z). Since then my CIFS performance is pretty much broken.
If I try to write a large file (~12GiB) to a CIFS share, the speed starts at 100MB/s, goes down to around 70MB/s and then stops completely for a couple of seconds. After it picks up again the speed floats around 30-40MB/s and completely stops every few seconds.
In Bandwith Monitor it looks something like this: http://goo.gl/8EZqI
Is there any way to improve performance?
Even if I try FTP oder NFS the same problem occours.
So...
a) Does the CPU have not enough power for a four disk raid-z?
b) Are there settings I can tweak the zfs pool with? I'm a huge noob and I don't even know how or where I could change those settings.
I appreciate every help I could get.
Thanks.
Edit: Some more graphs. http://goo.gl/Lg2iy
And I'm using the FreeNAS 8.2-beta4