HP ProLiant Cluster HA/F500 for Enterprise Virtual Array Enhanced DT Supplement Guide

Introduction
Bidirectional DT Configuration
The bidirectional DT configuration allows a source subsystem to also be configured
as a destination subsystem. The bidirectional DT configuration consists of the
following:
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Two ProLiant servers as cluster nodes
Two storage subsystems
Four HP StorageWorks Fibre Channel switches
Two Fibre Channel Adapters (FCA) in each server
Two SMAs, at least one for each site
NOTE: Refer to the HP StorageWorks Continuous Access EVA Design Reference Guide,
Appendix A and Appendix B, for complete lists of supported equipment.
Figure 1-2 shows a bidirectional DT configuration consisting of two separated
nodes. As in the basic DT configuration, data at the first site is mirrored on a
second storage subsystem at the second site. Two storage systems can communicate
bidirectionally, meaning that a storage system can be used as the primary source for
data and as a destination for data replication. By providing redundant systems and
software, as well as alternate paths for data flow, high availability and disaster
tolerance is achieved with no single point of failure.
1-8 HP ProLiant Cluster HA/F500 for Enterprise Virtual Array Enhanced DT Supplement Guide
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Writer: Bill Akers File Name: b-ch1 Introduction
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