Install dedicated data replication software on the server.

Reduce the impact on server performance: Compatibility requirements are relatively high, and options are small.

Mature technology, large selection area, small connection distance limit, and high stability.

Less investment and good compatibility. Affect server performance.

Production system equipment information

Network information

Business system

Data volume

Cancel write protection from the end

Adjust the recovery strategy to manual

Split

Switch directly without any operation

During asynchronous remote replication, after the master LUN write I/O is successful, the master array returns the write I/O success to the host.

After creating an asynchronous remote replication relationship, you need to do an initial synchronization.

When adding a secondary LUN for asynchronous remote replication, the system automatically creates and activates the snapshot of the primary and secondary LUNs.

4+3:1

6+3

4+2

12+3:1

Capacity is not easy to expand

Backup media needs to be managed

Need high bandwidth network

Not easy to deploy

On the backup server or media server, combine the previous full backup and other incremental or differential backups to generate a full backup.

Since the full backup is generated on the backup server, there is no pressure on the application server.

The backup space occupied is as large as the full backup.

The recovery time is longer than the full backup time.