Cloud storage is a cloud computing model in which data is stored on remote servers accessed from the internet, or "cloud." It is maintained, operated and managed by a cloud storage service provider on a storage servers that are built on virtualization techniques.
An external hard drive is a storage device located outside of a computer that is connected through a USB cable or wireless connection. An external hard drive is usually used to store media that a user needs to be portable, for backups, and when the internal drive of the computer is already at its full memory capacity.
Rewritable Flash - Block Writes - Asymmetric. Flash memory is the most widely used non-volatile memory chip in both computers and consumer electronics (CE) devices. Although reads are random access to the byte level, writing is done at the block level similar to writing a disk sector.
In a dual-drive system, the manufacturer will install a small SSD primary drive (C:) for the operating system and apps, and add a larger spinning hard drive (D: or E:) for storing files. This works well in theory; in practice, manufacturers can go too small on the SSD.
Alternatively referred to as a USB flash drive, data stick, pen drive, memory unit, key chain drive and thumb drive, a jump drive is a portable storage device. It is often the size of a human thumb (hence the name), and it connects to a computer via a USB port.