Thoughts on first Scale build / pool layout (cont'd)

imvi

Dabbler
Joined
Dec 16, 2022
Messages
16
This is a continuation of my now read-only post here. I felt that some of the points below might be useful to future readers e.g. the power consumption data.
So, continuing right where we left off:

Storage
Thanks @Davvo, I didn’t have TrueNAS Scale installed yet, hence I tried to do it with FreeDOS. I have installed it by now (on one of my old 128GB SSDs, a Crucial M4-CT128M4SSD2, mirrored to another (ancient) 128GB Samsung MS5SPA128HMCD).
When moving from cardboard to case I didn't fully plug one of them in, so the boot pool immediately degraded but the mirroring works, yay ;)

I plan to use the final SSD leftover from my Desktop’s upgrade, a 1TB Crucial MX500 (CT1000MX500SSD1), as a temporary download directory for Deluge and application data in general. However, I also saw here that Crucial MX500s might be causing issues, so I’ll have to test thoroughly if this works, get a cheap replacement otherwise. 1TB is ‘too much’ anyway.

I had quickly considered using the M.2 slots for the boot drive(s), but since I have the HBA, as well as left-over SSDs, that doesn’t make sense to me right now.

IPMI and fans
With TrueNAS installed and thus access to ipmitool on the Linux console, I reset the IPMI logins and it works great so far. Now I no longer need to rig up the old VGA monitor - no regrets getting this feature!

I also set the fan thresholds - thanks for the link! - although they looked pretty good already (likely why the issue with the power cycling occurred only rarely). I lowered them a bit more and now all is fine.
I have since also moved everything into the final case with different fans and those haven’t given me any troubles from the start.

Hardware changes
I got a good price on another two of the same 16TB HDDs, and for the RAM eventually also decided to switch to KSM32ED8/32HC, which wasn't any more expensive and gives me the option for 128GB should I ever need it. It doesn’t run at 3200 Mhz and wont let me select it in BIOS although the board should support it, but I don’t really care either.

The updated system configuration now looks like this:
Mobo Supermicro X12SCZ-TLN4F
CPUXeon W-1270E
CoolerThermalright True Spirit 140 BW (indeed, no backplate issues in my case)
RAM2x Kingston Server Premier DIMM 32GB, DDR4-3200 (KSM32ED8/32HC)
HBAAOC-S3008L-L8e
CaseLian Li A75X
PSUbe quiet! Dark Power Pro P7 650W ATX
Boot DrivesMirror of Crucial M4-CT128M4SSD2 / Samsung MS5SPA128HMCD

I ran Memtest on this and it passed just fine. Since yesterday the HDDs are going through disk-burnin.sh.
Once done, I’ll play around with layouts, in particular comparing a 3-way mirror as initially suggested by @sretalla to a 5-wide Raid Z2 which I could now also do in terms of disks available.

Power
Since I was initially concerned about power usage, here’s a few numbers that might be of interest to others. My measuring device is probably not super accurate but it should give a good idea.

Using the temporary PSU FSP350-60HHN
IPMI only8-9W
Idling system w/ 1 case fan, 1 CPU fan (Arctic Alpine 12 CO)40W
Idling system w/ 1 case fan, 1 CPU fan, 2 boot SSDs40W
Idle in TrueNAS shell w/ all of the above and 1GbE port active25W
Idle in TrueNAS shell w/ all of the above and 10GbE port active27W
Memtest90-140W depending on the particular test

Using the be quiet PSU
IPMI8-9W
TrueNAS shell, 4 case fans, 1 CPU fan (Thermalright), 1GbE IPMI + 10GbE40W
above + HBA + 5 16TB Toshiba MG08ACA16TE idling75W
above in Memtest185W
above in disk-burnin.sh (badblocks) on all HDDs95-105W

These values are not as high as I had initially feared. While 75W idle isn't as low as I would have hoped (in absolute terms), almost of half of that is just the disks, and another good portion the 5 fans. So in retrospect I'm happy not to have gone for a lower TDP CPU/Mobo combo that would have likely limited me down the road or at least been more costly.

As I expected from my experience with the case, temperatures are not a consideration. Both CPU in idle as well as HDDs (independent of load) are only 5-10 degrees over ambient. I haven't tested it yet, but am sure the Thermalright can easily handle the CPU at full load.

Network
Finally, I have a X540-T1 in my client machine and with some initial iperf testing, I only get about 570 MB/s. Increasing the clients in iperf I can saturate the link. Still have to check what’s going on there, but from reading around, fiddling with jumbo frames is apparently not the way to go these days.
 
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Davvo

MVP
Joined
Jul 12, 2022
Messages
3,222
You can likely reduce your consumption a bit if you play with a few settings, however me not using SCALE means I can't guide you more about it.
 
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