How does Double-Take compare to snapshot products?
While snapshots are useful in providing for rapid recovery of files from different points in time, they typically do not allow for creation on a separate disk or server and are not full data images, they typically capture just the changed data. As such they are not able to provide recovery in the event a server or disk were to fail or become unavailable. Double-Take on the other hand provides local and remote replication and creates a complete image of the production data that can be used for rebuilding, restoring, and failover.
