A datastore cluster has certain vSphere Storage vMotion® requirements.
- The host must be running a version of ESXi that supports Storage vMotion.
- The host must have write access to both the source datastore and the destination datastore.
- The host must have enough free memory resources to accommodate Storage vMotion.
- The destination datastore must have sufficient disk space.
- The destination datastore must not be in maintenance mode or entering maintenance mode.