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Vol. 8 Num. 4 June 2009

DR readiness in a deduplicated world

One of the big benefits of employing data deduplication for secondary disk targets is its ability to reduce the size of data sets, enabling replication with lower bandwidth requirements. By Lauren Whitehouse If you're a storage pro, you should be familiar with the phrase "time to protection." This is the time required to complete all of the activities that must occur between the initiation of a backup and the arrival of the backup copies at an offsite location for disaster recovery (DR) purposes. For tape-based DR schemes, this includes the time it takes to execute the backup, prepare offsite tape copies and transport them to a remote location. For disk-based DR strategies, this would be the time it takes to back up to disk and move the data offsite via replication, which can vary depending on the amount of data to transfer and the available bandwidth. One of the big benefits of employing data deduplication for secondary disk targets is its ability to reduce the size of data sets and enable replication with lower bandwidth ...

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