SYSTEM NEWS FOR SUN USERS
Vol 64 Issue 4 2003-06-23 Article 10258 from section "VERITAS"
Two Options Provide Web-based Management and Disaster Recovery
The 15-page white paper on VERITAS Global Cluster Manager (GCM) explains
that GCM extends the capability of VERITAS Cluster Server (VCS) to a
global scope. GCM is the glue that binds the local high availability
capabilities of VCS and various types of replication together to provide
a seamlessly integrated disaster recovery (DR) solution.
GCM provides the functionality of both a Web-based management tool and a
disaster recovery tool. As a management tool, GCM enables the management
of multiple VCS clusters (regardless of the operating system platform)
from a single console. As a disaster recovery tool, it enables
replication management in conjunction with application failover
necessary to support cluster or site-level failover.
The GCM Base Product provides for heterogeneous operating system cluster
management capability, offering a single point of access, via a
Web-based GUI or CLI, for monitoring and administering VCS clusters
throughout an enterprise. GCM can manage VCS clusters of all major open
systems operating systems: AIX, HP-UX, Linux, the Solaris[TM] Operating
System (Solaris OS) and Windows.
The second product configuration, the GCM DR Option, enables migration
of single applications, multiple clusters or complete datacenters from
one location to another regardless of distance between sites. GCM DR
Option manages application failover in conjunction with replication,
using both host-based replication and array-based hardware solutions.
GCM components run as a VCS service group, enabling them to be onlined,
offlined and switched through GCM commands from an administrator at a
remote site. A site, the largest component of GCM, is a GCM logical
construct that describes a collection of VCS clusters. A site could be
as small as a single-node VCS cluster, or it could encompass up to
sixty-four 32-node VCS clusters.
Each GCM site contains a Site Master operating within one of the
clusters of the respective site. The master daemon process runs as part
of the service group, which allows automatic local failover to any node
operating within the designated cluster. Site status is determined by
the monitoring of Im Alive heartbeat signals between sites. If a
connection link between site masters is lost, the process will
automatically try to reestablish a connection and repeat the attempts
until either a connection is made or re-try limits are hit.
Further details are available at:
Details at http://sun.systemnews.com/64/4/VERITAS/index.shtml#10258
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