Sepaton combines VTL replication, de-duplication

By Kevin Komiega

-- Disk-based backup vendor Sepaton is offering a new remote replication feature for its family of S2100 virtual tape libraries (VTLs). The DeltaRemote software replaces Sepaton's previous replication technology, Site2.

DeltaRemote replicates large volumes of data over distances, with the added bonus of Sepaton's DeltaStor data de-duplication software to reduce the bandwidth requirements of replication by as much as 97%, according to Steve Bagby, Sepaton's senior director of product planning and engineering.

"We have had replication for our VTL products before, but DeltaRemote uses de-dupe to reduce bandwidth utilization," says Bagby. "Now we send new and unique data from each tape cartridge rather than shipping a whole tape cartridge over the wire, which results in bandwidth reductions."

DeltaRemote software works with DeltaStor de-duplication software to identify and replicate only unique data and pointers to previously stored duplicate data. According to Bagby, the process cuts the amount of transmitted data by as much as 40:1.

DeltaRemote is integrated with Sepaton's management console and runs on existing Sepaton nodes, eliminating the need for separate, dedicated appliances. As a result, a Sepaton system can back up, de-duplicate, and replicate as much as 25TB of data per node per day.

Restore times have also been improved through the use of "forward referencing," a de-duplication method that maintains the most recent backup in a format ready for restores without reassembly. Data can be restored at 600MBps per node.

DeltaRemote software will ship at the end of May for a price of $11,000 per node. Sepaton will continue to support Site2 customers, but Bagby says DeltaRemote will be the company's replication product going forward.

Related articles:
Sepaton S2100 VTL with data de-duplication
Users react to de-duplication deals

This article was originally published on May 18, 2009