The Twittersphere was abuzz yesterday with EMC’s announcement of VPLEX. For those of you who missed it, VPLEX is a storage virtualization and caching solution that presents block storage over long distances. The initial release only supports data center and metro distances with a future of continental and global reach. The announcement struck me as yet another flavor of storage virtualization which is already offered by many vendors, and got me thinking about protecting VPLEX data.
Traditional data protection architectures revolve around the concept of a master backup server supporting slave media servers and clients. The master server owns the entire backup environment and tells each server when and where to backup. The model is mature and works well in today’s datacenters where servers are static and technologies like VMotion move VM’s to new servers within the confines of the datacenter. However, the concept of global VMotion can break this model.