- Motherboard: SuperMicro X9DBL
- CPU: Intel Xeon E5 2470v2
- RAM: 6x 16 GB Samsung DDR3 ECC 1666
- Boot: 2x USB mirror 64Gb
- Hard drives: 5x Seagate IronWolf 4TB RAIDZ2
So my problem with dropping read/write, network is 1Gbit, so sometimes it runs 100Mb/s and then could drops to 0, as you can see on screenshot, this is full range from 0 to 100Mb/s speed. Same thing happen via FTP, i already check.
So my question is: could ZFS or Freenas write some logs on system drive (usb pen drive my case)?
Turns out that this USB stick is very slow (system start up takes 10 minutes) and when i check "reporting" page in freeNas UI, in time of pool disk usage, there is system drive usage with write as well (screen 2).
I will move system to SSD but now iam not sure that it helps.
So could very slow system disk affect read/write pool performance?
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