Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

Understanding Veritas

Volume Manager

This chapter includes the following topics:

■ About Veritas Volume Manager

■ VxVM and the operating system

■ How VxVM handles storage management

■ Volume layouts in VxVM

■ Online relayout

■ Volume resynchronization

■ Dirty region logging

■ Volume snapshots

■ FastResync

■ Hot-relocation

■ Volume sets

About Veritas Volume Manager

Veritas

Volume Manager (VxVM) by Symantec is a storage management

subsystem that allows you to manage physical disks and logical unit numbers

(LUNs) as logical devices called volumes. A VxVM volume appears to applications

and the operating system as a physical device on which file systems, databases

and other managed data objects can be configured.

Chapter