The partition shows up on the array that appears in devices, but I don't see anything in the datastores. I'm seeing the following log details in vmkernal.log that appear pertinent to me.
2018-10-03T03:12:50.027Z cpu11:2097777)ScsiDeviceIO: 3015: Cmd(0x459a40bb4700) 0x1a, CmdSN 0x596 from world 0 to dev "naa.600605b008f54cc01f26fd89641704b7" failed H:0x0 D:0x2 P:0x0 Valid sense data: 0x5 0x24 0x0.
2018-10-03T03:10:54.920Z cpu11:2097370)WARNING: Vol3: 3102: datastore1/5b91d3af-1dcf06c8-e37e-ac220b8c42e2: Invalid physDiskBlockSize 512
2018-10-03T03:10:54.925Z cpu11:2097370)FSS: 6092: No FS driver claimed device '5b91d3ae-fe7ddcfc-31ba-ac220b8c42e2': No filesystem on the device
Is this thing really toast? almost seems like the uuid changed. Any advice or direction anyone might be able to give, would be very much welcome.