Key Features

Continuous, asynchronous, byte-level replication - Double-Take monitors changes to all protected files and replicated only the actual bytes that change.
Unlimited distance replication - Replicate to a disaster recovery site as far away from your production server as you would like, over standard IP networks, for maximum protection against data loss from regional crises and other disasters.
Use standard network protocols - Replicate over any existing IP network, LAN, WAN, VPN or NAT so you can deploy without additional infrastructure costs.
Bandwidth Throttling - User defined controls within Double-Take can limit the amount of the available network bandwidth it can use for data replication. This allows replication to occur real-time without impacting users on the same network.
Open-file Mirroring and Replication - Double-Take doesn't require that applications be restarted each time additional files and/or directories are configured for replication. Users, customers and applications remain online and active while Double-Take is at work.
Integrated with existing backup solutions - Use replicated data to perform remote backups at any time without impacting your production server.

Productive Corporation