I know the SQ psu's help, but how quiet is this chassis at powered-on idle with all the other fans? Will it be annoying behind only a hollow-door in a closet next to a living area?
As @frogtech notes, it's definitely audible when set to standard (or optimal). I've got an X10SRH in one chassis with the fans set through IPMI as mentioned above. I have a second chassis with a consumer board that has pretty granular fan control to set the fans low. Both are in an open "rack" at the end of my desk and they are quiet enough that I can hear the disk activity over the fans.It's annoying at idle on standard fan setting, however, if you use a Supermicro X10 board or greater you can set the fan mode to 'full speed' and use IPMI raw commands to set the fan speed to 10% which is more than enough I find for home use and makes it pretty much whisper-ish quiet.
If you get a board with an onboard LSI controller I would slap a Noctua 40x10mm fan to the top of it, and maybe one for the PCH as well. The C236 PCH does not get as hot as the C206, so it's not as much of a concern, but I have some spares I'm not actively using so figured why not.
I used one of the 2U Passive heatsinks (I think SNK-P0048PS) and then put a 60mm Noctua fan on it using the included rubber fan mounts pulled through the heatsink fins to hold it in place. https://forums.servethehome.com/index.php?threads/sm-cse-826-sweet-deal.34551/post-320009+1 to that
I have two of these with the same board, X10SRH-CF and I use the SNK-P0048AP4 for each. Oddly enough the fan on that cooler is louder than all 3 chassis fans combined, so you will def want to implement some sort of fan control.
This post was pretty popular and a lot of folks bought them: https://forums.servethehome.com/index.php?threads/supermicro-x10srh-cf.28009/Cool, many thanks for the info!
Is there somewhere you guys are finding [or an old deal I missed?] reasonable pricing on those X10SRH boards? I only see them ~$500+ on ebay, and they don't seem special enough for multiple people to have made that choice at that price