SAN is a storage area network. This means that there is a (dedicated) network that connects block storage with initiators. The initiators are usually run some form of application as a server, e.g. a block device is exported over the SAN to a database server. read more
Storage area networks (SANs) and network attached storage (NAS) both provide networked storage solutions. A NAS is a single storage device that operates on data files, while a SAN is a local network of multiple devices. read more