Editing Clariion (section)

==History==
The Clariion disk array project started in the early 1990s when [[Tom West]] (the protagonist of the Pulitzer Prize winning book ''[[The Soul of a New Machine]]'') convinced Data General to develop the array. West realized the potential for more advanced and openly compatible data-storage devices, as did competitors such as Digital Equipment Corporation with their [[HP StorageWorks|StorageWorks]] product.<ref name="Clar_hist1">{{cite web |url= http://www.computing.co.uk/ctg/feature/1861584/emc-squares-storage-costs-reputation |title= EMC squares up to storage costs and reputation |publisher= computing.co.uk |date= 30 January 2003|accessdate= 24 March 2011}}
</ref>

Patented in 1994, the Clariion disk array had some interesting features that later became standard in the data-storage and computing industry. Features mentioned in the patent paperwork included optional [[hot swapping]],<ref>{{US patent reference| number= 5371743| y =1994|m=12|d=06|inventor=DeYesso; Joseph P. (Walpole, MA), Solomon; Robert C. (Kensington, NH), Todd; Stephen J. (Shrewsbury, MA), Lippitt; Mark C. (Boulder, CO)|title=On-line module replacement in a multiple module data processing system}}</ref> guide rails for proper electrical contact, and a method to lock the drives in place once they were secured in the disk enclosure. Other notable features include industry's first dual active-controller design, mirrored write cache, full system redundancy and hot repair.{{Citation needed|date=August 2007}}

The Clariion line was soon extended to contain SCSI disk arrays ranging from 7 to 30 slots. In 1997, Data General's Clariion division took the unusual step of adopting an emerging standard — [[Fibre Channel]]. The FC5000 array utilized a [[Fibre Channel Arbitrated Loop]] connection that doubled the performance of SCSI arrays at that time. It was also the first to use [[RAID]] level 5 on Fibre Channel drives.{{Citation needed|date=August 2007}}

From there, the Clariion range grew into a faster, more expandable midrange storage platform, culminating in the FC5700 under Data General. After EMC's acquisition of Data General, significant development of a new range of Clariion arrays took place, resulting in the FC4500 and FC4700. A special model was the IP4700, offering IP-based access to storage.

Within a couple of years,{{When|date=February 2011}} the first CX series of Clariions (CX200, CX400 and CX600) was developed. Subsequent processor and bandwidth upgrades led to a new CX lineup (CX300, CX500, CX700) and a low end SATA based Clariion array, the AX100 (now updated to AX150). In 2003, Clariion became the industry's first [[Network Equipment-Building System|NEBS]]-certified storage system.

In May 2006, EMC introduced the third generation of Clariion, named ''CX3 UltraScale''. The lineup, consisting of the CX3-20, CX3-40 and CX3-80, was the industry's only storage platform to leverage end-to-end 4 [[gigabit|Gbit]]/s (4 billion [[bit]]s per second) Fibre Channel and PCI-Express technologies. Later in 2007, the line was expanded to include a new entry-level storage system, the CX3-10.

Most newer Clariion models up to the CX-4 run a version of [[Windows XP Embedded]].{{Citation needed|date=September 2010}}