A simple search on any online retailer will show that there is no shortage of external storage manufactures. Many hard drive manufactures, such as Seagate and Western Digital, and third party storage manufactures, such as LaCie and AcomData, have portable storage products. Personally, I prefer to have an enclosure and buy the internal hard drive separately. This allows me to upgrade the hard drive when the need arrives. Also, it allows me to use my older hard drive as a portable storage device.