You can protect volumes with local replication or with remote replication.
Note: Command devices cannot be protected. Do not perform this action for command devices.
Local replication
You can protect volumes locally on the same storage system and choose to protect a single volume, a group of volumes, or all volumes attached to a server.
- Clone Now
- The Clone Now method creates a copy of a volume in a point in time. This method creates a full copy of a primary volume and automatically suspends the copy procedure. Any further read-write functions of the primary volume will not be updated to the secondary volumes.
- Snap
- The Snap method takes incremental snapshots of volumes based on a user-created schedule. The retention policy (maximum number of snapshots) is from 1 to 1024, based on user input. When the retention policy is exceeded, the oldest snapshots are deleted when newer snapshots are created. Note: When a user removes a storage system and adds it again, all the protected volumes using Clone Now will remain untouched, but any snapshot schedules will be suspended. The user will need to resume scheduling after adding the storage system.
- Snap on Snap
- Snap on Snap is a snapshot that can support a cascaded configuration. They can be created inside or outside Ops Center Administrator. If they are created outside Ops Center Administrator, you cannot do anything on the replication group. Note: The cascaded configuration is not supported within Ops Center Administrator.
Remote replication
Use global-active device to help ensure reliability.