I have FreeNAS 0.7.3 (5543) running on a Q9550 mini ITX system with 4GB of RAM. I previously had 3x WD20EARS drives attached and had good performance over gigabit ethernet. I just bought 3 more WD20EARS drives and destroyed the array to create a new one using graid5. All the drives are the version 3 (667 platters).
The new configuration is 6x WD20EARS with 4 drives off the motherboard and 2 drives off an areca arc-1200 running as passthrough. With the new array I am copying data to the NAS and getting speeds of 10-15 MB/s average over gigabit. I had one transfer that started around 50 MB/s but then went down after a bit and has stayed around 9-12 MB/s.
In FreeNAS I checked Satus| Disks and got:
Disk------Capacity----------Device model------------------------------I/O statistics----------------------------------Temperature---------Status
ad8-------1907730MB------WDC WD20EARS-00MVWB0------111.25 KiB/t, 84 tps, 9.13 MiB/s------41 °C------------------ONLINE
ad10-----1907730MB------WDC WD20EARS-00MVWB0------118.35 KiB/t, 79 tps, 9.12 MiB/s------40 °C------------------ONLINE
ad12-----1907730MB------WDC WD20EARS-00MVWB0------121.10 KiB/t, 77 tps, 9.12 MiB/s------38 °C------------------ONLINE
ad14-----1907730MB------WDC WD20EARS-00MVWB0------121.30 KiB/t, 77 tps, 9.13 MiB/s------40 °C------------------ONLINE
da1-------1907730MB------n/a---------------------------------------------62.28 KiB/t, 150 tps, 9.14 MiB/s------30 °C------------------ONLINE
da2-------1907730MB------n/a---------------------------------------------62.28 KiB/t, 150 tps, 9.13 MiB/s------30 °C------------------ONLINE
9.13 MiB/s seems very low, these drives should be closer to 90 MiB/s. Under diagnostics I noticed that the drives are setup with 63 spt. Could this be causing the slowdown by misaligning the 4k sectors? I was under the impression that without partitions this should not be an issue.
If anyone has thoughts I would greatly appreciate it, and I can provide more information if needed.
The new configuration is 6x WD20EARS with 4 drives off the motherboard and 2 drives off an areca arc-1200 running as passthrough. With the new array I am copying data to the NAS and getting speeds of 10-15 MB/s average over gigabit. I had one transfer that started around 50 MB/s but then went down after a bit and has stayed around 9-12 MB/s.
In FreeNAS I checked Satus| Disks and got:
Disk------Capacity----------Device model------------------------------I/O statistics----------------------------------Temperature---------Status
ad8-------1907730MB------WDC WD20EARS-00MVWB0------111.25 KiB/t, 84 tps, 9.13 MiB/s------41 °C------------------ONLINE
ad10-----1907730MB------WDC WD20EARS-00MVWB0------118.35 KiB/t, 79 tps, 9.12 MiB/s------40 °C------------------ONLINE
ad12-----1907730MB------WDC WD20EARS-00MVWB0------121.10 KiB/t, 77 tps, 9.12 MiB/s------38 °C------------------ONLINE
ad14-----1907730MB------WDC WD20EARS-00MVWB0------121.30 KiB/t, 77 tps, 9.13 MiB/s------40 °C------------------ONLINE
da1-------1907730MB------n/a---------------------------------------------62.28 KiB/t, 150 tps, 9.14 MiB/s------30 °C------------------ONLINE
da2-------1907730MB------n/a---------------------------------------------62.28 KiB/t, 150 tps, 9.13 MiB/s------30 °C------------------ONLINE
9.13 MiB/s seems very low, these drives should be closer to 90 MiB/s. Under diagnostics I noticed that the drives are setup with 63 spt. Could this be causing the slowdown by misaligning the 4k sectors? I was under the impression that without partitions this should not be an issue.
If anyone has thoughts I would greatly appreciate it, and I can provide more information if needed.
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