We were upgrading vSphere ESXi 5.5U2 to ESXi 6.5U1. After upgrade, the local datastore still existed but the datastores of two SAN storages were missing.
Then we tried to rollback and re-install 5.5U2, the datastores of SAN storage were still missing. In Storage > Devices, the SAN disks were missing. I have clicked 'Rescan' and nothing happened.
Re
I checked the logs and found the following error message. I am not sure it is related.
2018-03-28T03:36:59.431Z cpu8:65917)VMWARE SCSI Id: Id for vmhba1:C2:T0:L0
0x6b 0x82 0xa7 0x20 0xd4 0x18 0xef 0x00 0x1b 0xa1 0xa3 0x6b 0x18 0x58 0x6f 0x3c 0x50 0x45 0x52 0x43 0x20 0x48
2018-03-28T03:36:59.431Z cpu8:65917)ScsiDeviceIO: 9167: Get VPD 86 Inquiry for device "naa.6b82a720d418ef001ba1a36b18586f3c" from Plugin "NMP" failed. Not supported
2018-03-28T03:36:59.431Z cpu8:65917)ScsiDeviceIO: 7851: Could not detect setting of QErr for device naa.6b82a720d418ef001ba1a36b18586f3c. Error Not supported.
2018-03-28T03:36:59.432Z cpu6:65917)ScsiDeviceIO: 8365: Could not detect setting of sitpua for device naa.6b82a720d418ef001ba1a36b18586f3c. Error Not supported.