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.)

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A. Use RVC to upgrade the hosts. VMware's vSAN upgrade documentation specifies RVC as the supported tool for performing rolling host upgrades within a vSAN cluster, because it understands vSAN disk group dependencies and can safely sequence the upgrade across nodes. B. Use the latest available ESXi version. Using the latest available ESXi version ensures all vSAN 6.5 on-disk format features and bug fixes are included, which is a VMware best practice to prevent compatibility issues between cluster nodes.

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C. Back up all VMs. Backing up VMs is a general best practice for any maintenance but is not a specific vSAN upgrade requirement listed in VMware's upgrade documentation.

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D. Use only the "Full data migration" maintenance mode option. VMware allows multiple maintenance mode migration options (No data migration, Ensure accessibility, Full data migration); mandating only 'Full data migration' is not a requirement and would be unnecessarily disruptive in many environments.

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.)

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