ExaGrid supports replication from the primary site to a secondary site for disaster recovery. The disaster recovery site can be an organization’s own second data center or rented rack space at a third-party hosting facility.
On a week-to-week basis, approximately 2% of the data changes at the byte level, and therefore only 1/50th of the data needs to be transferred. ExaGrid’s deduplication requires about 1/50th of the bandwidth versus transferring undeduplicated backup data.
ExaGrid can also cross-protect data. If site A is sending backups into an ExaGrid appliance and site B is also sending backups into an ExaGrid appliance, then ExaGrid can replicate the data coming into site A to site B and the data coming into site B to site A.
ExaGrid also supports up to 16 major data centers in a cross-protection group with a master hub and 15 spokes. All spokes replicate to a master hub disaster recovery site. The data being backed up at the master disaster recovery site is replicated to any of the spoke sites for disaster recovery.
Over 50% of ExaGrid’s customers have eliminated tape both onsite and offsite by using an ExaGrid system onsite for local backup and restores and then replicating to a second-site ExaGrid as a second data center for disaster recovery.
ExaGrid has a unique advantage for unidirectional replication. If the second site is for disaster recovery only, then the second-site ExaGrid can be configured to be used as a repository only. ExaGrid is asymmetrical as the second-site system can have the front-end landing zone and repository disk all be used as a repository. All other solutions are symmetrical, which requires the same size system on both sides of the replication. This unique ExaGrid approach allows a half-size system to be used at the second site which saves valuable budget dollars over other solutions.