Hi there, I have an Unraid system with a 10GBE connection.
It has two pools.
- 2 1TB NVME SSDs in ZFS Mirror (SABRENT Rocket SSD 1TB)
- 4 18TB 7200RPM HDDs in ZFS Mirror (2 groups of 2 WD RED)
Both are shared over SMB using exclusive share to my M1 MBP (connected via thunderbolt 3-->10GBE adapter).
The Problem:
Rightfully or Wrongfuly, I am testing the speed of the share using Black Magic Disk Speed Test
I have found that BEFORE I setup exclusive shares, my speeds were like this:
SSD ZFS ---> 430 MB/s Write, 495 MB/s Read
4HDD ZFS ---> 422 MB/s Write, 500 MB/s Read
However, AFTER I setup the exclusive shares, my writing speed dropped to
SSD ZFS ---> 335 MB/s Write, 504 MB/s Read
4HDD ZFS ---> 295 MB/s Write, 500 MB/s Read
Overall, I found these results a bit confusing because
1) I expected a NVME SSD to perform so much better over a 10GBE connection.
2) I expected that adding exclusive share would have sped up my transfers rather than have a negative impact on the writing.
Can anyone shed any light on what I am probably missing here?
Thanks