Resources are optimized in an integrated data protection system having a production host, primary storage and a backup appliance for backup and restore of lost data to a selected restore point. Data tracks in primary storage having changed data are pushed to backup storage with a changed-tracks bitmap mapping the changed tracks. A selected restore capacity is reserved on a restore device, but the restore device is only provisioned for a capacity sufficient to store changed tracks corresponding to the selected restore point, thus obviating the creation and storing of metadata for the unprovisioned capacity. This conserves significant storage and memory capacity and reduces processing requirements.