With sync activated your spinner pool will drop significantly in performance.
Its fine to test with the same parameters as you did for your 800MB/s value, just to see the difference.
For non Optane drive its not recommended to split a drive into l2arc and ZIL
Nah not sure, but sometimes things (backplane for example) are also screwed on to the bottom. The screws are reachable from the inside, not from the actual bottom, just hidden behind cables sometimes.
Can't access mine atm, so no clue and can't remember from the last time I replaced a PDB.
Well I did a lot of edits while checking the differences.
I think 2 vs 3 might be the major issue (whereas getting the 3 hole version might be more compatible then the 2 hole one (check your server though), also it might that the 14 contains some handles for the desktop to rack conversion of the...
They might only send to Germany/EU, let me know if you need help with that.
Also, it seems they have 3 square mounting holes (to fit...
Have not used Unraid, but from what I know
Very simple with UnRaid, potentially not so simple with FreeNas/Napp-It (replacement/extension per vdev)
Check for both
easy for UnRaid, depends on the HW for FN/Napp-IT
No idea re UnRaid, kind of for FN/Napp-IT (a part of memory is used for...
So i had typed up that lengthy reply below before re-reading your initial question seeing you are primarily concerned about cpu utilization. I left it in because it seemed a waste to delete it, maybe its interesting despite being unfinished (ie no numbers etc).
Regarding your primary concern of...