I still rock FreeNAS (never needed FC specifically) but I learned the hard way, be VERY wary of their updates as they have a long history of breaking things in updates. Sometimes intentionally with advance warnings, sometimes not. The storage system shouldn't be Russian roulette. Like...
Maybe RasPi doesn't use a standard keyboard/mouse interface or the OS in any case.
One thing I could mention is Spider had published html5 kvm firmware for this little guy and then for some reason pulled it.
Can't stand Java one.
Before joining this community I never fathomed that 10g in home labs is SO widespread around these parts and there are plenty of (NEED) use cases for 10gig in home labs and large capacity LINUX ISOs storage systems. In my case, my home-lab small 3 node HCI runs miles better on 10gig.
Write cache isn't used in IT mode, so getting a raid controller with batteries then flashing it to IT mode would be pointless. Then you added SSD for ZIL, all the writes go to it first, making it "sort of" a write cache.