Removing one of the controllers might help, basically closes down the unused path from the backplane. Contrary to the MD1200, which allows for 3,5" SATA disks, the MD1220s Drive Support Matrix does not list any SATA disks:
That's an annoying bug. Probably doesn't help that the PX02SMs were release before SAS3 controllers were generally available. They were actually one of the very first SAS3 SSDs ever built....
Since you are running SATA disks, did you try the MD1220s with just the first controller installed?
I'm guessing you're not using Interposers, right?
Btw, you do realise that those drives are SMR, right? DM-SMR to be exact.
What speed are the other disks working at? 6G or 12G?
Are the Toshiba Disks from Toshiba themselves, or Dell/HP/Fujitsu/etc branded?
Dell for instance have released 3 firmware updates for the PX02 series.
Theoretically, it might be possible, if you had the smaller CPU heat sinks (not standard in SFF case) and sufficient SAS Ports. The 3.5" disk midplane is placed behind the fan wall, above right the CPUs.
Yes, it'll do that and more. Just be sure to install the current SwOS 2.13 or higher.
You will definitively want to get the CRS309 over the 305 for it's better switch chip. They're adding wirespeed routing with RouterOS 7 (currently beta) and the 309 actually support NAT and Fasttrack...
Did you check whether the cables are in the correct order in the 3-pin plug?
If I remember correctly, Cisco went went with a non-standard order. At least they did with the SG300s. Normally a 3-pin fan would go ground-vdc-tacho. With the SG300 fans however they used vdc-tacho-ground.
If you want to use local server storage for a Hyper-V Cluster AND have other nodes use that storage, too, then you need to present it as an smb 3 application share on a Scale File Server role.
Basically, you need to install the Failover Clustering role and install the cluster without storage...
Mikrotik announced the CSS610-8G-2S+IN today: product page
8x 1GE RJ45, one with PoE-in for redundant power input.
2x 1/10G SFP+
That's a pure L2 switch running SwitchOS.
The outdoor variant is the netPower Lite 7R, also announced today, at 129$.
2x 130W CPUs + 20W NIC + 50W Mainboard&PERC + 2x 10W SSD and 7x7=50W for FANs puts you at 400W plus 3W/8GB of memory. That's the absolute max.
At 90%+ load you get around 90% (up to 92%) efficiency out of the 495W PSU. Thus, the 495W PSU tops out at around 450W fully loaded. You should be good...