This is an external hard disk. This hard disk can be used for heavy data storage. I purchased this hard disk from online shopping with an affordable price which was minimum price compare of all 1 TB hard disk. So this hard disk is value for money for me. This hard disk has good data transfer read and write speed. This hard disk can also be used for data backup. If there occurs any problem in our computer and laptop hard disk and we lost all our data, then this hard disk works as security of all our data.