Wide area file services
Encyclopedia
Wide area file services (WAFS) products allow remote office users to access and share files globally at LAN
Län
Län and lääni refer to the administrative divisions used in Sweden and previously in Finland. The provinces of Finland were abolished on January 1, 2010....

 speeds over the WAN
Wide area network
A wide area network is a telecommunication network that covers a broad area . Business and government entities utilize WANs to relay data among employees, clients, buyers, and suppliers from various geographical locations...

. Distributed enterprises that deploy WAFS solutions are able to consolidate storage to corporate datacenters, eliminating the need to back up and manage data that previously resided in their remote offices. WAFS uses techniques such as CIFS and MAPI protocol optimization, data compression
Data compression
In computer science and information theory, data compression, source coding or bit-rate reduction is the process of encoding information using fewer bits than the original representation would use....

, and sometimes storing recurrent data patterns in a local cache
Cache
In computer engineering, a cache is a component that transparently stores data so that future requests for that data can be served faster. The data that is stored within a cache might be values that have been computed earlier or duplicates of original values that are stored elsewhere...

.

WAFS is a subset of WAN optimization
WAN Optimization
WAN optimization is a collection of techniques for increasing data-transfer efficiencies across wide-area networks. In 2008, the WAN optimization market was estimated to be $1 billion , and it will grow to $4.4 billion according to Gartner, a technology research firm.The most common measures of...

, which also caches SSL Intranet and ASP
ASP
ASP may refer to:-Electronics:* Analog signal processing, processing electronic signals that represent continuous variables by use of analog circuitry* Anti-skip protection or electronic skip protection, a protection of an audio compact disc playback...

 applications and elearning multimedia traffic as well, to accelerate a greater percentage of WAN traffic.

The term was coined by Brad O'Neill of the analyst firm Taneja Group in a May 2004 article for InfoStor magazine.

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