deepak_velusamy,
Hello. You cannot backup those particular files. You can download a full, compressed copy though. You can grab it from here:
- Go to http://www.autodesk.com
- At the bottom of the page, beneath "Help and Support" click "Customer Service"
- Click the "Ask" button for the "Virtual Agent"
- Once the Virtual Agent opens, click "Download Links"
- Select the appropriate product and download
Thank you for taking part in our community!
David Dembkoski