Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Building a Metropolitan Cluster Using MetroCluster/SRDF
Overview of MetroCluster/SRDF
Chapter 4 125
MetroCluster with Symmetrix SRDF is specifically for configuring one or
more MC/ServiceGuard packages whose data reside on EMC Symmetrix
ICDAs (Integrated Cache Disk Arrays) replicated with SRDF
(Symmetrix Remote Data Facility).
MetroCluster with Symmetrix SRDF can be used in metropolitan cluster
configuration with nodes in a loop of up to 100 km. Symmetrix
configurations can be either 1 by 1 (one Symmetrix at each data center)
or M by N (one or two Symmetrix frames at each data center).
Configuration of MetroCluster/SRDF must be done on all the cluster
nodes, as is done for any other MC/ServiceGuard package. To use
MetroCluster/SRDF, Symmetrix host-based software for control and
status of the EMC Symmetrix disk arrays must also be installed and
configured on each HP 9000 host system that might execute the
application package.