When you set up your computer to automatically back up files, you specify a location where the files are stored. You can change this location if you run out of space in the current location or if you want to change the type of storage location (such as a DVD, a hard disk on your computer, or a shared folder on another computer on a network).
You can only save your backups on a network location on Windows 7 Professional, Windows 7 Ultimate, and Windows 7 Enterprise.
Open Backup and Restore by clicking the Start button , clicking Control Panel, clicking System and Maintenance, and then clicking Backup and Restore.
Click Change settings, and then follow the steps in the wizard.
If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
If you save your backups on an internal or external hard drive and you're running out of space, you can free up disk space by deleting older backups. For more information, see What backup settings should I use to maximize my disk space?