Slow writes on N40L

[atsza]

Hello

Got my SMB up and running on a HP Microserver N40L
My/base hardware: https://n40l.fandom.com/wiki/Base_Hardware_N40L
(+ aftermarket 1x 8gb ecc ram)
6TB WD red

Copying files from my desktop to the nas is capping out at 13mb/s.
Files are pictures ~24mb and their RAW counterparts ~45mb.
ipref is showing "promising" results

Truenas dashboard is showing 1000BaseT
Switched out the cable to a 4pair cat5e
changed slots on the gigabit switch

Any tips to improve data flow?

 

[Arwen]

That is a pretty old computer, CPU was released May 12, 2010 and uses DDR3 memory. Plus, the storage controller only supports SATA II, 3Gbps. It also appears that the network controller is some HP specific one.

Not sure you could get more performance out of the computer, except perhaps using an SSD for storage.

Using a single storage disk, (6TB WD Red), is not recommended. Any block failure can lead to data loss.

Last, please check your 6TB WD Red model. Western Digital snuck in SMR type recording in to the WD Red line, which is MUCH slower than CMR. All current 6TB WD Red drives are SMR. Only older ones from a few years a go were CMR. Further, SMR drives don't work well with ZFS.

WD Red SMR Drive Compatibility with ZFS

Thanks to the FreeNAS community, we have uncovered a potential ZFS compatibility issue with some capacities of newer WD Red drives that use SMR (Shingled Magnetic Recording) technology. Update to this post...

www.truenas.com

List of known SMR drives

Hard drives that write data in overlapping, "shingled" tracks, have greater areal density than ones that do not. For cost and capacity reasons, manufacturers are increasingly moving to SMR, Shingled Magnetic Recording. SMR is a form of PMR...

www.truenas.com

WD Red Plus & WD Red Pro disks use CMR technology, so should be safe for TrueNAS use.