Chapter 13. Local Replication
Replication is the process of creating an exact copy of data. Creating one or more replicas of the production data is one of the ways to provide Business Continuity (BC). These replicas can be used for recovery and restart operations in the event of data loss.
The primary purpose of replication is to enable users to have designated data at the right place, in a state appropriate to the recovery need. The replica should provide recoverability and restartability. Recoverability enables restoration of data from the replicas to the production volumes in the event of data loss or data corruption. It must provide minimal RPO and RTO for resuming business operations on the production volumes, while restartability must ensure consistency of data on the replica. This enables restarting business operations using the replicas.
Replication can be classified into two major categories: local and remote. Local replication refers to replicating data within the same array or the same data center. This chapter provides details about various local replication technologies, along with key steps to plan and design an appropriate local replication solution. Remote replication is covered in Chapter 14.
Source and Target
A host accessing data from one or more LUNs on the storage array is called a production host, and ...
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