How can I enable Volume Shadow Copy Service (VSS) snapshots in Windows Server 2003?

Open Windows Explorer or the Microsoft Management Console (MMC) Disk Management snap-in, then right-click the drive.

Select Properties from the context menu.

Select the Shadow Copies tab.

Under "Select a volume," select the volume for which you want to enable Shadow Copies.
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Click Settings to configure VSS. (If you don't configure the default settings, Windows 2003 will use a default configuration that creates a Shadow Copy on the selected drive at 07:00 a.m. and 12:00 p.m. every weekday).

In the displayed dialog box, configure the settings to tell Windows 2003 where you want VSS to store the Shadow Copies (you can specify only the drive--you can't specify a folder) and the maximum amount of space to use for the Shadow Copies (at least 100MB), then click Schedule.

From the drop-down list in the Schedule dialog box, select a time to make a scheduled Shadow Copy. After you select a time, you can use the options in the dialog box to specify when VSS runs (i.e., the date and time). You can also click New to create a new schedule. For example, you might want to schedule the system to make a Volume Copy on Saturday at 7:00 a.m. and on Sunday at 7:00 a.m. Click OK after you finish selecting the scheduling options.

Click OK to exit the main Settings dialog box.