Tuning performance/power consumption in TrueNAS Core and BIOS settings.

[minutiaaddict]

I have a Cisco C240 M4 server I'm going to use for TrueNAS Core. It has:

• two Xeon E5-2650 v4
• 128GB EEC DDR4 2133 MHz ram (I can expand that to 384GB later, or more if I feel like replacing what I already have, it was a killer deal in the end)
• 12 LFF hotswap bays, 3 of which are loaded with 8tb NAS class drives (two WD80EMAZ, one IronWolf Pro. I will be using the new ZFS expand feature when it comes to that. I am already theory crafting a way to manually force restriping to ameliorate the efficiency loss from this.)
• (For the curios) Other stats are pretty good too. i350 based networking, 256 Gb 840 Pro boot drive, redundant PSUs, behind a UPS; only prickly part is the SAS card is a LSI 3108 based unit which cannot run the 'ideal' firmware.

Anyway, into the meat of my inquiry. I'm tuning the power/performance setting in the BIOS and am wondering if any of you have input.

These are the settings I can set and what I have them am preemptively.

Should I change any of these? I have read that HWPM might bite me in the butt, maybe?

https://www.truenas.com/community/t...cro-x10sdv-xeon-d-1541-esxi-all-in-one.47261/





I have also set QPI Snoop Mode to "Early Snoop" which the documentation lists as better for workloads not optimized for NUMA.

https://www.cisco.com/c/en/us/td/do..._Guide_41_appendix_010011.html#d54e11292a1635

That link is Cisco's documentation for this server's settings.



Are there any other setting I should have a gander at as well?

Edit: I forgot to mention some of the things I might be planning on using in TrueNAS. It will be a single raidz2 vdev, mostly running zstd compression and maybe dedupe since I'm RAM rich. Lots of mixed media, so I'll be looking into zvols of various block sizes and maybe a L2ARC cache. I will also be running a Hydrus database so I might also mirror that in its entirety to a SSD... somehow (research needed).