Back Up CD for my laptop

Hi,

I recently purchased Inspiron 15R. And I noticed that Dell did not provide Back Up system CD for my laptop. Is there a way that I can buy separate from Dell?

On a side note, I tried backing up via Dell Backup and Recovery. However, it did not work because the system asked me the memory card / hard disk of 100 GB and above.

I tried using my existing hard disk to back up. But, the system warmed that if I do so, my hard disk will be formatted and I will lose all my data completely.

Can you please help? Thanks.

Best,

moesan