Metro Mirror

The Metro Mirror function guarantees data consistency by ensuring that a write complete operation is only received by the host application after a remote copy has been committed to the target storage unit and acknowledged by both the source and target storage units.

The Metro Mirror feature is accessible only from the Real-time Manager; the Metro Mirror feature is not accessible from the Simulated Manager.

• Metro Mirror — Main page
  Use this page to set up Metro Mirror relationships between source (primary) volumes and target (secondary) volumes to allow for application data recovery, failover to remote sites for disaster recovery, and remote migration of data and offsite backups.
• Create Metro Mirror relationship — Volume pairing method
  Use this page to determine the method (automated or manual) of selecting volume pairs for Metro Mirror relationships.
• Create Metro Mirror relationship — Select source volumes
  Use this page to select source volumes to participate in a Metro Mirror relationship. The source volumes that you select at your production (or local) site are mirrored to target volumes at your recovery (or remote) site.
• Create Metro Mirror relationship — Select target volumes (auto pairing)
  Use this page to select target volumes to participate in Metro Mirror relationships. The target volumes at your recovery (or remote) site receive updates that are written to the source volumes at the production (or local) site.
• Create Metro Mirror relationship — Select target volumes (manual pairing)
  Use this page to select target volumes to participate in Metro Mirror relationships. The target volumes at your recovery (or remote) site receive updates that are written to the source volumes at the production (or local) site.
• Create Metro Mirror relationship — Select copy options
  Use this page to select one or more copy options that determine the type of operations to be performed on the volume pairs that are participating in Metro Mirror relationships
• Create Metro Mirror relationship — Verification
  Use this page to verify the characteristics of the volume pairs for the Metro Mirror relationships that you want to create.
• Delete Metro Mirror relationship
  Use this page to select either a source volume or target volume on which a specific Metro Mirror relationship is deleted against.
• Suspend — Select volumes
  Use this page to select either a source or target volume on which to suspend. During the suspension, the storage unit does not copy data to the target volume of the volume pair.
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  Use this page to confirm which volumes that you want to convert to a Metro Mirror relationship.
• Resume — Confirm
  Use this page to confirm the volume pairs in which Metro Mirror will start a background copy and copy out-of-synchronous tracks.
• Recovery failover — Confirm
  Use this page to confirm which volume pairs to use during a failover operation to your recovery site. This process allows the volumes from your recovery site to be used to restart your production environment during a planned or unplanned outage.
• Recovery failback — Confirm
  Use this page to confirm the volume pairs on which to run the recovery failback operation to allow changed data to be sent back to your production site to synchronize the volume pairs.
• Metro Mirror Properties — General
  Use this page to view and monitor selected Metro Mirror relationships after the source and target relationships are created.
• Metro Mirror Properties — Out-of-sync tracks
  Use this page to view the out-of-sync tracks on the Metro Mirror source and target volume pairs.