VERITAS Volume Manager 3.1 Storage Administrator Administrator's Guide

Volume Tasks
Creating a Snapshot Copy of a File System
Chapter 4202
Creating a Snapshot Copy of a File System
This procedure prepares a vxfs file system for online backup by creating
a snapshot copy of the file system. This is done by creating a new volume,
mounting a snapshot file system on the new volume, and copying the
contents of the original file system to the snapshot file system. The
snapshot file system is a consistent copy of the original file system at the
time the snapshot was made. You can use the snapshot file system to
make a backup of the original file system at a convenient time. After the
backup is made, you can remove the snapshot file system by removing
the underlying snapshot volume (see “Removing a Volume”).
To create a snapshot copy of a file system’s data
Step 1. Select the file system to be backed up.
Step 2. Choose File Systems > Snapshot (Selected menu) or File System
Snapshot (Command Launcher).
Step 3. Complete the File System Snapshot dialog box as follows:
When you have provided all necessary information in the dialog box,
File System Name: If the correct file system name is not already
displayed in this field, type the file system’s name
or click Browse to select the file system.
Snapshot Mount Point:Type the mountpoint for the snapshot copy of the
file system.
Snapshot Size: Type the size of the snapshot copy of the file
system.
Options To place the snapshot on a specific disk(s), click
Assign Disks and select the disks you want to
use.