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Clariion
Clariion (styled CLARiiON) is a discontinued SAN disk array manufactured and sold by EMC Corporation, it occupied the entry-level and mid-range of EMC's SAN disk array products. In 2011, EMC introduced the EMC VNX Series, designed to replace both the Clariion and Celerra products.
Upon launch in 2008, the latest generation CX4 series storage arrays supported fibre channel and iSCSI front end bus connectivity. The fibre channel back end bus offered 4 Gbit/s of bandwidth with FC-SCSI disks or SATAII disks.
The EMC Celerra NAS device is based on the same X-blade architecture as the CLARiiON storage processor.
The first CLARiiON was developed in 1992 by Data General Corporation, one of the first minicomputer companies. CLARiiON was an early commercial example of a RAID product and initially sold exclusively as an array with the company's Aviion line of computer systems as the HADA (High Availability Disk Array) and later the HADA II before being made available for broader open systems attachment and renamed CLARiiON in 1994. Realizing the enormous potential of storage arrays, Data General created a separate Clariion division and began selling the product as an OEM offering to its systems competitors. While this somewhat lessened the advantages of Aviion in the marketplace, and was a source of internal corporate friction, it allowed the company to sell higher volumes and popularize the brand. The strategy paid dividends as the company was acquired by EMC in 1999, primarily for the CLARiiON line of products.
In 2011, EMC introduced the new VNX series of unified storage disk arrays intended to replace both CLARiiON and Celerra products. Internally the VNX is labeled the CX5. In early 2012, both CLARiiON and Celerra were discontinued.
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 StorageWorks product.
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, 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]
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]
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Clariion
Clariion (styled CLARiiON) is a discontinued SAN disk array manufactured and sold by EMC Corporation, it occupied the entry-level and mid-range of EMC's SAN disk array products. In 2011, EMC introduced the EMC VNX Series, designed to replace both the Clariion and Celerra products.
Upon launch in 2008, the latest generation CX4 series storage arrays supported fibre channel and iSCSI front end bus connectivity. The fibre channel back end bus offered 4 Gbit/s of bandwidth with FC-SCSI disks or SATAII disks.
The EMC Celerra NAS device is based on the same X-blade architecture as the CLARiiON storage processor.
The first CLARiiON was developed in 1992 by Data General Corporation, one of the first minicomputer companies. CLARiiON was an early commercial example of a RAID product and initially sold exclusively as an array with the company's Aviion line of computer systems as the HADA (High Availability Disk Array) and later the HADA II before being made available for broader open systems attachment and renamed CLARiiON in 1994. Realizing the enormous potential of storage arrays, Data General created a separate Clariion division and began selling the product as an OEM offering to its systems competitors. While this somewhat lessened the advantages of Aviion in the marketplace, and was a source of internal corporate friction, it allowed the company to sell higher volumes and popularize the brand. The strategy paid dividends as the company was acquired by EMC in 1999, primarily for the CLARiiON line of products.
In 2011, EMC introduced the new VNX series of unified storage disk arrays intended to replace both CLARiiON and Celerra products. Internally the VNX is labeled the CX5. In early 2012, both CLARiiON and Celerra were discontinued.
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 StorageWorks product.
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, 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]
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]