What Is Hdlm - Hitachi XP P9500 User Manual

What is HDLM?

With the widespread use of data warehousing and increasing use of
multimedia data, the need for high-speed processing of large volumes of data
on networks has rapidly grown. To satisfy this need, networks dedicated to
the transfer of data, such as SANs, are now being used to provide access to
storage systems.
HDLM manages the access paths to these storage systems. HDLM provides
the ability to distribute loads across multiple paths and switch to another path
if there is a failure in the path that is currently being used, thus improving
system availability and reliability.
Figure 1-1 Connections Between Hosts and Storage systems on page 1-2
illustrates the connections between various hosts and storage systems.
An ESXi server that connects to a storage system via a SAN is called a host. A
machine that connects to a host via a LAN and uses commands and utilities
to control it is called a remote management client.
HDLM supports the following storage systems.
• Hitachi AMS2000/AMS/WMS/SMS series
• Universal Storage Platform V/VM
• Virtual Storage Platform
1-2
Figure 1-1 Connections Between Hosts and Storage systems
Overview of HDLM
Hitachi Dynamic Link Manager User Guide (for VMware(R))