Computer Hardware, Network and Storage

Computer Hardware includes the physical parts of a computer, such as the case, central processing unit (CPU), monitor, mouse, keyboard, computer data storage, graphics card, sound card, speakers and motherboard.

Storage refers to the process of storing and preserving data or information in a digital format. In the context of computing, storage refers to the hardware and technologies used to hold and retain data, files, and i.e., Hard Disk Drives (HDDs), Solid-State Drives (SSDs), etc.

Computer network is a set of computers sharing resources located on or provided by network nodes. The computers use common communication protocols over digital interconnections to communicate with each other. These interconnections are made up of telecommunication network technologies, based on physically wired, optical, and wireless radio-frequency methods that may be arranged in a variety of network topologies.

Storage Area Network (SAN) is a type of computer network that is high speed and connects groups of storage devices to several servers. This network does not depend on LAN or WAN. Instead, a SAN moves the storage resources from the network to its own high-powered network. A SAN provides access to block-level data storage.

Examples of SAN are a network of disks accessed by a network of servers.