In addition, it is an easy way to ensure none of your records are accessed because you can add protection to them, like passwords or you can encrypt sensitive data like your customers or company’s financial information. If they are backed up on an external hard drive, then the records can be easily retrieved, and you can use them to keep your business running. If you run a business, whether it is an e-commerce site or a brick and mortar company, it makes sense to back up your records to another hard drive in case your computers crash, are stolen, or a disaster destroys them. The main benefit of having an external hard drive is security.