Hitachi MK-96RD626-07 - Manual (Page 20)

1-4 Overview of Universal Volume Manager
Hitachi Universal Storage Platform V/VM Universal Volume Manager User’s Guide
Unifying Connections from a Host to Different Storage
Systems
When a system has multiple storage systems, a host usually needs to connect
all storage systems. When a system administrator configures the connections
from a host to volumes, they need to follow the different instructions
depending on the storage systems.
If you install Universal Volume Manager, a system administrator only needs to
configure the connection from a host to the USP V/VM storage system. After
the configuration is completed, a host can manipulate volumes in the external
storage system in the same way as volumes in the USP V/VM storage system.
Host
Legend
： Volumes installed in the storage system
： Virtual volumes that do not have physical memory space
： Access
： Lines showing the concept of virtualization
UVM allows you to unify the connections from a host
to different storage systems.
External Storage System
USP V/VM
Storage System
Host
External Storage System
USP V/VM
Storage System
Without UVM, a host needs to connect all storage systems.
Figure 1-2 Unifying Connections from a Host to Different Storage
Systems