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Definition: cloud storage gateway

Software or a stand-alone hardware appliance that redirects disk reads and writes from the local network to a service on the Internet. By converting network file input/output (I/O) commands to Internet HTTP protocols, the data is transferred to and from the cloud storage datacenter rather than to the local storage devices such as a storage area network (SAN) or network attached storage (NAS) device. See cloud storage, SAN and NAS.