HP XP P9500 Storage - Manual (Page 64)

For large-scale system configurations using many hosts running HDLM, the
operational load for managing paths on individual hosts increases with the
size of the configuration. By linking HDLM and Global Link Manager, you can
centrally manage path information for multiple instances of HDLM and reduce
operational load. In addition, you can switch the operational status of paths
to perform system-wide load balancing, and centrally manage the system by
collecting HDLM failure information in Global Link Manager.
Global Link Manager collects and centrally manages information about paths
from instances of HDLM installed on multiple hosts. Even if multiple users
manage these hosts, they can control and view this centralized information
from client computers.
The following figure is an example of a system configuration using HDLM and
Global Link Manager.
Figure 2-15 Example System Configuration Using HDLM and Global Link
Manager
Cluster Support
HDLM can also be used in cluster configurations.
2-42
HDLM Functions
Hitachi Dynamic Link Manager User Guide for Solaris ®