Hitachi Dynamic Link Manager, User Manual, Page: 78 / 746

2. HDLM Functions
54
2.13 Integrated HDLM management using Global Link Manager
By using Global Link Manager, you can perform integrated path management on
systems running multiple instances of HDLM.
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 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.
For an example of a system configuration using HDLM and Global Link Manager, see
Figure 2-16: Example System Configuration Using HDLM and Global Link
Manager .