For posterity's sake:
So I have worked with this enclosure for quite some time without any hitch, achieving the max that my old drives can achieve (tested without drivepool, 50mb/sec).
Now for the box itself, you get it with 2 fans, one 140mm [placeholder for name and specs here] for the harddrives and a 80mm [placeholder for name and specs here] for the power supply, that had about 20 more dB output that I hated, living in an apartment and all.
So I replaced these with a "Noctua NF-P14s redux-900 140mm" where the installation without a hitch, and a "Noctua NF-R8 redux-1200 80mm" where I found that it could not be started without help, so I bought Y-cable connected to the 140mm as well (https://www.kjell.co...ar-3-pin-p98538) because the pin connector ON the PSU won't be able to drive my 80mm Noctua(!).
All in all, the sound level in my room went from 56.3 dB to 39.6 db, which is like a breeze for me. The HDD's are at a stable 26C even at high load under a long time, which makes me confident buying fan regulators from aliexpress..
Next up, I had to rename all drives "Icybox <drive bay> (<version of the drive>/<size>/USB version>)" to make sure I knew what to hotswap in the unlikely event ( ) that a disk goes nuts. "version of the drive" to not confuse the disks if they are ever connected in the same computer...
Snapraid is installed, as well as Elucidate for the GUI, with 2 parity drives for my 10 disk array, one disk being same size as the biggest in the array. I ran this the first time, and plan on running it once the balancing is done.
Speaking of fail-safe, I also run Duplication in DP for now, just for the piece of mind until I have fully tested the snapraid app in a recovery mode.
I have 2 SSDs for the RAID write cache. For this I installed SSD Optimizer but it didn't kick in until a restart.