External hard drives come in handy when your laptop or tablet contains little space for storage. Usually, laptops can go carry up to 5GB ram, but it might get slower as you tried to add more to your desktop and run more programs. And the best time to buy hard drives is during after-Christmas sales.

For offline purchasing, you would get a good price for after-Christmas sales on hard disks at Best Buy (NYSE:BBY). Not to worry if you missed the Black Friday sales. If you'd like to get a laptop plus a hard drive, you can't go wrong with HP chrome with a 16GB Single State Drive for $299 - a good deal because you get a lot more than just buying a hard drive alone, reports usindexlive.com.

Another way to get around the hard drive problem is to use Cloud storage, which comes free with the HP chrome at Best Buy. If you're not satisfied with either of these options, then you opt for an after-Christmas hard drive deal, which will probably cut your PC budget by about $30. Not much to really scream about, but still a good deal on hard drives at the end of the year.

If you want to get a good deal on hard drives, Newegg is the place to go. Here, you will find discount prices on storage devices for all your requirements, particularly if you are keen on purchasing a SSD or sold state drive. Amazon (NASDAQ:AMZN) is another place that gives you a good deal on hard drives.

For a lot of space, consider Crucial M500 2.5" internal SATA SSD from Micron Technology (NASDAQ:MU), which gives you 120GB storage for less than a $100. Traditional drives like Seagate (NASDAQ:STX give you the best value for your money as long as you're ok with slower speed. That's a 29 percent off at $169.99 - a great price tag with added quality at an after-Christmas deal on hard drives.

Youtube: Engineerguyvideo The video shows how a hard disk is designed and how it reads data.