A major upgrade of the ESXi code on an existing vSAN cluster was just completed. Upon logging on to the vSphere Web Client, the vSphere administrator encounters UI timeouts on vSAN specific menus.
What could cause this?
A major upgrade of the ESXi code on an existing vSAN cluster was just completed. Upon logging on to the vSphere Web Client, the vSphere administrator encounters UI timeouts on vSAN specific menus.
What could cause this?
The cause of the UI timeouts on vSAN specific menus is likely due to the vSAN on-disk format upgrade not being completed. After upgrading the ESXi hosts, it is necessary to upgrade the vSAN on-disk format to ensure compatibility and optimal performance. This step is crucial for the proper functioning of vSAN features and could explain the timeouts encountered in the vSphere Web Client.
I am gona say D is correct, assuming that the answer given actually means that the on-disk format upgrade is in progress and has yet to complete. I don't think A or B would cause issues with vSAN related GUI menus and the VC would be the first to be upgraded. You would not start the ESXi host upgrade until the VC was complete and all was operating normally.
I go for D and as per previous comments by others
D is correct but not because the upgrade is in progress but because the vSAN on-disk format is the next step in a VCSA/ESXi upgrade: The vSAN cluster upgrade proceeds in the following sequence of tasks: Enable the vSAN Online Health Workflow – This workflow enables the vSAN baselines in VUM so that updates can be reviewed and remediated. It needs to be carried out initially only to enable vSAN with VUM Pre-requisites – Understand the prerequisites, the process, and restrictions Upgrade the vCenter Server Appliance. For more information, see VCSA update and SSO-linked vCenters. Upgrade the vSphere ESXi hosts – For more information, see Creating baselines and attaching to inventory objects. Upgrade the vSAN disk format - Refer to Upgrade the vSAN Disk Format. Upgrading the disk format is optional, but for best results, upgrade the objects to use the latest version. The on-disk format exposes your environment to the complete feature set of vSAN. https://cloud.ibm.com/docs/vmwaresolutions?topic=vmwaresolutions-vum-updating-vsan
D. https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan.doc/GUID-ABABC0DF-2519-4C8F-A5B1-2AECF86247AB.html