How does deduplication improve off-site replication and DR?
The effect deduplication has on replication and disaster recovery windows can be profound. To start, deduplication means a lot less data needs transmission to keep the DR site up to date, so much less expensive WAN links may be used. Second, replication goes a lot faster because there is less data to send. The length of the deduplication process (beginning to end) depends on many variables including the deduplication approach, the speed of the architecture and the DR process. For the most efficient time-to-DR, inline deduplication and replication (inline) of deduplicated data will yield the most aggressive and efficient results. In an inline deduplication approach, replication happens during the backup, significantly improving the time by which there is a complete restore point at the DR site, or improving the time to DR readiness. Typically less than 1% of a full backup is actually new, unique deduplicated data sequences that can be sent over a WAN immediately upon the start of the ba
