Have build a FreeNAS server running 8.3.1-p2
Based on an AMD E-450 with 16 GB RAM.
4 x 3 TB disks WD RED running ZFS
The volume is now 67% used (3.5TiB) with 1.7TiB Free.
Connected to a Core-i7/940 machine over a D-Link DIR_685 storage router.
I used it mainly to store MP4 copies of movies recorded on DVD+R.
Typically, it used to take about 15 minutes to convert a DVD directly to the NAS,
and now it suddenly takes almost an hour.
Tried to figure out why, so I first copied the DVD to a hard drive.
This did not change conversion time, but when I changed output
directory from the NAS to a disk, it was back at normal speed.
If I copy a large file to the NAS (1 GB), then it copies at 4-5 MB / second,
which seems quite slow.
I read somewhere, that the size of the DRAM is critical when running ZFS.
Have I reached a limit on DRAM and need more than 16 GB
(Thats the MAX supported by the motherboard)?
Any other reason for the real slow write speed?
Based on an AMD E-450 with 16 GB RAM.
4 x 3 TB disks WD RED running ZFS
The volume is now 67% used (3.5TiB) with 1.7TiB Free.
Connected to a Core-i7/940 machine over a D-Link DIR_685 storage router.
I used it mainly to store MP4 copies of movies recorded on DVD+R.
Typically, it used to take about 15 minutes to convert a DVD directly to the NAS,
and now it suddenly takes almost an hour.
Tried to figure out why, so I first copied the DVD to a hard drive.
This did not change conversion time, but when I changed output
directory from the NAS to a disk, it was back at normal speed.
If I copy a large file to the NAS (1 GB), then it copies at 4-5 MB / second,
which seems quite slow.
I read somewhere, that the size of the DRAM is critical when running ZFS.
Have I reached a limit on DRAM and need more than 16 GB
(Thats the MAX supported by the motherboard)?
Any other reason for the real slow write speed?