2-4 About Universal Volume Manager Operations
Hitachi Universal Storage Platform V/VM Universal Volume Manager User’s Guide
Universal Volume Manager Components
System using Universal Volume Manager usually contains the following
components:
Local storage system (USP V/VM storage system)
External storage system
Storage Navigator computer
Universal Volume Manager
External volume
Internal volume, which is a virtual representation of an external volume
LDEVs (Logical Devices) in an external volume
Cross-subsystem path
Mapping path
The following figure illustrates the relations of the Universal Volume Manager
components.
Local Storage System
Target
Port
Host
Port
WWN
External Storage System
External
Port
Legend
Volumes installed in the storage system
Virtual volumes that do not have physical memory space
Lines showing the concept of mapping
Mapping
Cross-subsystem Path
Mapping Path
Storage
Navigator
Computer
SVP
(Web Server)
External
Volum e
LDEVs in the
External Volume
Set or View
BC
Create
LDEVs

Figure 2-2 Universal Volume Manager Components

This section describes the details of the storage systems, cross-subsystem
paths, volumes and mapping paths as shown in the above figure.