It might be tempting to create a “do-it-yourself” disaster recovery solution by purchasing additional hardware and installing it in a branch office or colocation facility. But creating an effective disaster recovery solution is a complex project and there are several unplanned costs and other hidden hazards associated with it. I’ll identify some of these hidden hazards over the next few weeks.
I’ll begin with SAN to SAN replication. Any SAN manufacturer with a clear understanding of storage space has some kind of SAN to SAN replication offer, but not all SAN to SAN replication is alike. When creating an effective DR solution, you have to make several architectural considerations for replicating data between production and DR, including virtualization, application specific agents and snapshot storage requirements.