Ryzen 7 Pro 8845HS: looks fancy, possibly ECC-enabled (though with punishing DDR5 SO-DIMM), but ultimately yet another case of a flashy consumer-oriented device with an excessively new and excessively powerful CPU for mere NAS use
…and with that Aostar throws an old 82599 as 10G NIC. Server-grade for sure but it’s PCIe 2.0 and that tells a lot about hardware design by a joint committee of marketing and finance departments.
That, unfortunately, falls short to take full advantage of a 10 Gb/s link. Can you bumpt it? (Or change the NAS…)
L2ARC uses RAM, so bump your RAM first. Then test in real use if you would benefit from a L2ARC.
SLOG demands an enterprise-grade drive with PLP. And I do not see a need for a SLOG in your workload: SLOG is only for sync writes, and is NOT A WRITE CACHE. Your video edits should be on forced async for maximal performance, certainly not through SLOG.
(TimeMachine does use sync writes, but who cares about speeding up a background backup?)
If you want a fast drive for fast edits, put some SSDs in a stripe for capacity and use that a scratch drive. No redundancy: Hot files only, save anything valuable to the HDD pool.
(Obviously, you’d better use these SSDs directly in a desktop machine for local editing.)
What do you boot from? TrueNAS takes a full drive for that.
Set periodic snapshots, even if you have no backup (which you should), SMART test and scrub. No tweak needed, but these basic services are to be defined on your own schedules.