VERITAS File System 4.1 Administrator's Guide

Chapter 9 139
9 Multi-Volume File Systems
VxFS provides support for multi-volume file systems when used in conjunction with the
VERITAS Volume Manager.Using the multi-volume support (MVS) feature, you can create a
single file system over multiple volumes and set the properties for each volume. For example,
it is possible to place metadata on mirrored storage while placing file data on better
performing volume types such as RAID5.
The MVS feature also allows you to create file systems on different classes of devices, so that
VxFS can support a file system from both inexpensive disks and expensive arrays.Using the
MVS administrative interface, you can control the data to be stored on the different volume
types available.
This chapter discusses the following topics:
• “Features Implemented Using MVS” on page 140
• “Volume Sets” on page 141
• “Creating MVS File Systems” on page 143
• “Allocation Policies” on page 145
• “Volume Encapsulation” on page 147
• “Converting from QuickLog to MVS” on page 149