RecoverPoint
RecoverPoint is a continuous backup solution offered by EMC Corporation. Capabilities include bi-directional asynchronous and synchronous data replication across heterogeneous storage arrays. Block based storage is supported as of today, both FC and iSCSI. All replication takes place over standard IP for asynchronous replication and Fibre Channel for synchronous replication. RecoverPoint handles FC to IP conversions for asynchronous replication.
The core behind this product’s ingenuity is its block based journaling and WAN based compression capabilities. Every write (or groups of writes) are aggregated together into a single snapshot for distribution. Snapshots are important in comparison to mirroring technologies due to the fact Garbage In equals Garbage Out. If Logical corruption manifests itself on the source volume it will be replicated to the destination volume. This is not the case with snapshot based technology, as each snapshot is a point in time of the production volume. Delineation between one snapshot and another is hard defined. Therefore with any snapshot there will be a “before and after” view of the production volume. The before being prior to logical corruption, the after being post corruption. Mirroring is a moving target, its only a matter of time before the logical corruption becomes viral and infects the remote copy. Therefore journal based replication is the future and the “now” of local and site to site replication.
References
- EMC RecoverPoint, a Single Solution for CDP and Disaster Recovery
- EMC plans to use Kashya technologies in RecoverPoint
- Continuous Data Protection With EMC RecoverPoint
- EMC Updates RecoverPoint SAN CDP/Replication Engine
External links
- EMC RecoverPoint [1]