Monitoring and maintenance

Parent Topic

• Storage Virtualization

  Controller-based storage virtualization dramatically simplifies the storage infrastructure by enabling the consolidation and aggregation of external heterogeneous storage resources in a single pool of enterprise storage capacity. Existing volumes and data on externally attached storage systems are discovered by Universal Volume Manager and presented through global cache as if they were on one system. Once virtualized behind the Hitachi storage system, external volumes gain access to all Hitachi storage services.

Child Topics

• Monitoring external volumes and paths

  You can view system details about mapped external volumes, the ports used, and the external paths.

• External volume policy settings and functions
• Editing mapping policies for external volumes
• Changing the MP unit of an external volume
• Changing path mode to ALUA mode (Enable or Disable)
• Changing I/O mode for external storage systems

  With Load Balance Mode settings, you can change the I/O mode for external storage systems for each of the external volumes.

• Changing the port settings of an external storage system

  You can change the port settings of an external system.

• Path maintenance
• Disconnecting external systems and volumes
• Deleting an external volume mapping

  If you no longer want to access data in an external volume, you can delete the mapping. When you do, the data in the external volume is not deleted.

• Reconnecting external systems and volumes

  After you disconnect an external system or volumes, you must reconnect them before you can start using them again.

• Requirements for external storage system maintenance
• Changing the WWNs/iSCSI target names of the external storage system without deleting the external volume mapping
• Powering off and on storage systems

  This section provides procedures for powering off and on local and external storage systems.