To have that amount of hardware would not be worth the grief from you know who
Yeah, I know who you're talking about - SHMBO.
On my end, the situation is a bit different. She's Irish and since my heritage (way back) is traceable to England, it's almost a genetic imperative - I must "oppress". (And if you believe that...)
I'm going to rerun the test, with the case assembled this time, to see what happens.
I reran the the full mem-test and this time it was error free, row hammer tests and all. But, this time, I had the case fully assembled... (That sounds like voodoo BS, uh?) In the bottom line, there's no "there", there, so I'm a happy camper. I'll run it one more time with the X5660's installed to make sure their cache is OK.
You could use snapshots for this too. Set a snapshot, try your test, rollback to the snapshot. This is supported in the free version.
Sure, but one of the things I did with OMV in Virtualbox was, do the basic build, set up a bunch of virtual 5GB drives and clone it a few times. One clone was configured for mdadm RAID, the 2nd ZFS, the 3rd EXT4 and MergerFS+SNAPRAID, etc. Cloning is useful for branching a basic build into different directions and keeping them for testing. It certainly saves time.
Proxmox seems interesting enough and there's more than a bit of reading to be done on Ceph . (As if ZFS wasn't enough.)