HP Hitachi Dynamic Link Manager Software - Manual (Page 75)

2. HDLM Functions
53
2.14 Cluster Support
HDLM can also be used in cluster configurations.
For details on cluster software supported by HDLM, the supported Solaris version, and
usable volume management software, see 3.1.5 Combinations of Cluster Software
and Volume Managers Supported by HDLM.
HDLM uses a path of the active host to access an LU.
Paths are switched in units of physical paths. Therefore, if an error occurs in a path, all
the other paths that run through the same physical path are switched. The switching
destination is a physical path of the active host. The details of host switching depend
on the application.
Note
When you use HDLM in a cluster configuration, you must install the same version
of HDLM on all the nodes that comprise the cluster. If different versions of
HDLM are installed, the cluster system might not operate correctly. If the
HDLM
Version
and
Service Pack Version
, which are displayed by executing the
following command, are the same, the versions of HDLM are the same:
# /opt/DynamicLinkManager/bin/dlnkmgr view -sys