Re: improving nfs client & server performance

Hi,

On Fri, 15 Nov 2024, at 16:30, J David wrote:
> Perhaps I'm overstating the case, but I believe that using ZFS on SMR
> disks is strongly discouraged. I haven't tried myself, mainly due to
> the horror stories I've read. Stories that sound a lot like yours.

I've heard about SMR drives too [0]. But when I was offered one at a 
Great Price [1] I installed it. I'll admit i didn't hear about SMR+ZFS 
combination being inadvisable, though.

it *was* working ok for the purpose I allocated it - namely, 
more like a tape drive than a hard drive, in terms of write speed. 
But read speed *was* acceptable. Ish. It's this which has deteriorated.
Everything that was on that drive that was important is now on other 
non-SMR based hardware or backed up offsite.

[0] in the context of archiving not-often-accessed data
[1] a gift
[2] theoretically, with eg copies=3 it should have been self-healing errors
[3] a failure mode of slowing down is preferable to completely giving up.
Now, with all the data off it, it'll be junked as too slow for purpose.