The image shows two tenancies—labeled Old Tenancy and New Tenancy—side by side. Each tenancy contains a compartment, containing boot/block volumes. In the Old Tenancy, one boot/block volume is a backup boot/block volume.

In the new tenancy, a new tenancy identity group manages the new tenancy compartment and can access volumes, volume-backups, and boot volume backups in both tenancies. The new tenancy identity group access the old tenancy compartment based on an admit policy. It acesses the new tenancy compartment based on an endorse policy.

One boot/block volume in the old tenancy compartment is closed to its counterpart in the new tenancy compartment. The boot/block volume backup in the old tenancy compartment can be restored to the boot/block volume in the new tenancy compartment.