Another benefit of data deduplication is the ability to keep more backup sets on near line storage. With the amount of backup disk space reduced, more "point in time" backups can be kept ready on disk for faster and easier file restoration. This also allows you to maintain a longer backup history. Instead of having three versions of the file to restore, users can have many more, enabling a very granular approach to file backups and accommodating loads of backup history.
Disaster recovery is another process that greatly benefits from data deduplication. For years, data compression was the only way to reduce the overall size of the off-site data set. Add in deduplication and the backup set can be reduced even more. Why transfer the same data set each night when only a small portion of it changed that day? Deduplication in disaster recovery makes perfect sense: Not only is the transfer time reduced, but the WAN is used more efficiently with less overall traffic.
Read more about how manage data deduplication in InfoWorld's free PDF report, "Data Deduplication Deep Dive," including:
- How data deduplication really works
- File-, bit-, and block-level deduplication compared
- Source, target, and inline deduplicatin compared
- Deduping beyond the backup tier
Read more about storage in InfoWorld's Storage Channel.