Hitachi MK-96RD626-07 - Manual (Page 24)

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
Volume
LDEVs in the
External Volume
Set or View
A B C
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.