You can store View Composer replicas on a separate datastore or on the same datastores as linked-clone virtual machines. These configurations affect the availability of the pool in different ways.
When you store replicas on the same datastores as linked clones, to enhance availability, View Composer creates a separate replica on each datastore. If a datastore becomes unavailable, only the linked clones on that datastore are affected. Linked clones on other datastores continue to run.
When you store replicas on a separate datastore, all linked clones in the pool are anchored to the replicas on that datastore. If the datastore becomes unavailable, the entire pool is unavailable.
To enhance the availability of the linked-clone virtual machines, you can configure a high-availability solution for the datastore on which you store the replicas.