May 23, 20242 yr 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
May 23, 20242 yr Community Expert Exclusive shares should never cause a performance degradation, most times it should be faster, or at least the same, don't really trust that as a benchmark, recommend testing with an actual large file transfer using Windows explorer.
May 23, 20242 yr Author 2 minutes ago, JorgeB said: Exclusive shares should never cause a performance degradation, most times it should be faster, or at least the same, don't really trust that as a benchmark, recommend testing with an actual large file transfer using Windows explorer. Fair enough, if I do not have access to windows is there a better way for me to gauge? Is there a more reliable Mac Alternative?
May 23, 20242 yr Author 35 minutes ago, JorgeB said: Exclusive shares should never cause a performance degradation, most times it should be faster, or at least the same, don't really trust that as a benchmark, recommend testing with an actual large file transfer using Windows explorer. I gave this a try actually measuring from MacOs' activity monitors.. the numbers more or less match up.
May 23, 20242 yr Community Expert MAC SMB with Samba opens another can of worms, and I don't use Macs so cannot help, but there are some threads here with settings that myy improve SMB performance with Mac, start with this one, you can also search the forum for ore tips:
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