You can use Universal Volume Manager (UVM) to connect VSP 5000 series and VSP E series to other storage systems.
In UVM, VSP 5000 series and VSP E series are referred to as a local storage system, and the other storage systems are referred to as external storage systems. With UVM installed, you can use external and internal volumes as pool-VOLs. Volumes in local storage systems are referred to as internal volumes, and volumes in external storage systems are referred to as external volumes.
To minimize the adverse effects of failure, use only one pool per external storage system. An external pool-VOL that is blocked due to a failure blocks the pool. You must restore blocked pools.
For more information about external storage systems and disaster recovery methods for external volumes, see the Hitachi Universal Volume Manager User Guide.