When upgrading a VMware vSAN cluster to version 6.5, which two tasks must be completed to comply with
upgrade requirements and VMware-recommended best practices? (Choose two.)
A.
Use RVC to upgrade the hosts.
B.
Use the latest available ESXi version.
C.
Back up all VMs.
D.
Use only the “Full data migration” maintenance mode option.
This is about the ESXi upgrade and not about the VSAN on disk format upgrade. VMware recommends not to use ‘Ensure data accessibility’ evacuation method if you upgrade the hosts:
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-B387B369-2800-4044-8B4C-C0537E61ECE4.html
I think B and D are the correct answers.
BD
BC
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-B387B369-2800-4044-8B4C-C0537E61ECE4.html
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-B387B369-2800-4044-8B4C-C0537E61ECE4.html
looks more like BC
I thought it was BD but the document bellow agrees with the answers above so AB seems to be correct
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-ABABC0DF-2519-4C8F-A5B1-2AECF86247AB.html
correct AB
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-ABABC0DF-2519-4C8F-A5B1-2AECF86247AB.html
The vSAN cluster upgrade proceeds in the following sequence of tasks.
1)Upgrade the vCenter Server. See the vSphere Upgrade documentation.
2)Upgrade the ESXi hosts. See Upgrade the ESXi Hosts. For information about migrating and preparing your ESXi hosts for upgrade, see the vSphere Upgrade
3)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. See Upgrade vSAN Disk Format Using RVC.
AB is correct