VERITAS Volume Manager 3.1 Administrator's Guide

Cluster Functionality
Introduction
Chapter 7296
Introduction
This chapter discusses the cluster functionality provided with the
VERITAS™ Volume Manager (VxVM). The Volume Manager includes an
optional cluster feature that enables VxVM to be used in a cluster
environment. The cluster functionality in the Volume Manager is a
separately licensable feature.
The following topics are covered in this chapter:
• “Cluster Functionality Overview”
• “Disks in VxVM Clusters”
• “Dirty Region Logging and Cluster Environments”
• “Dynamic Multipathing (DMP)”
• “FastResync (Fast Mirror Resynchronization)”
• “Upgrading Volume Manager Cluster Functionality”
• “Cluster-related Volume Manager Utilities and Daemons”
• “Cluster Terminology”