Anfuitblog

 Problem Overview After upgrading your VMware ESXi host to version 7.0u3s , you may encounter a critical issue: The attached FC (Fibre Channel) datastore disappears , and all virtual machines stored on that shared storage become “inaccessible” . This issue is common during ESXi version upgrades, where datastores fail to auto-mount due to changes in system recognition or mount configurations. Symptom Description vSphere Web Client still displays the storage device under the hardware list. However, df -h shows that the mount point is missing . Virtual machines that resided on the FC datastore now appear as “Invalid” in the inventory. ✅ This confirms it's not a driver or firmware issue , but rather a mount-related problem. Root Cause During the upgrade, ESXi may not automatically remount previously attached volumes , even though the storage device is visible. The datastore still exists, but it needs to be manually re-mounted using the correct UUID.   How ...