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EMC

EMC Corporation (stylized as EMC²) is an American multinational corporation headquartered in Hopkinton, Massachusetts, United States. EMC offers data storage, information security, virtualization, analytics, cloud computing and other products and services that enable businesses to store, manage, protect, and analyze data. EMC's target markets include large companies and small- and medium-sized businesses across various vertical markets. The stock was added to the New York Stock Exchange on April 6, 1986, and is also listed on the S&P 500 index.
EMC has over 60,000 employees and is the world's largest provider of data storage systems by marketshare, competing against NetApp, IBM, Hewlett-Packard, and Hitachi Data Systems (arranged in descending order of external data storage marketshare).
Joe Tucci has been EMC's chief executive since January 2001 and chairman of the board of directors since January 2006; he joined the company in 2000 as president and chief operating officer. Tucci is also chairman of the board of VMware Corporation and chairman of the board of Pivotal Software, which are partially owned by EMC.
In 2012 and 2013, EMC was included on a number of award lists, including the World's Most Admired Computer Companies, Top 100 Global Innovators, and Best Multinational Workplaces in Europe. EMC also received a score of 100 on the Human Rights Campaign 2012 and 2013 Corporate Equality Index.

NetAPP

The line of NetApp filers has served as the company's flagship product from the very beginning. A filer is a type of disk storage device which owns and controls a filesystem, and presents files and directories to hosts over the network. This scheme is sometimes called file storage, as opposed to the block storage which major storage vendors like EMC Corporation and Hitachi Data Systems have traditionally provided.
NetApp's filers initially used NFS and CIFS protocols based on standard local area networks (LANs), whereas block storage consolidation required storage area networks (SANs) implemented with the Fibre Channel (FC) protocol. In 2002, in an attempt to increase market share, NetApp added block storage access as well. Today, NetApp systems support it via FC protocol, the iSCSI protocol, and the emerging Fibre Channel over Ethernet (FCoE) protocol.
The filers use NetApp's proprietary operating system called Data ONTAP which includes code from Berkeley Net/2 BSD Unix, Spinnaker Networks technology, and other operating systems. Data ONTAP originally only supported NFS, but CIFS, iSCSI and Fibre Channel (including Fibre Channel over Ethernet) were later added. Today, NetApp provides two variants of Data ONTAP. Data ONTAP 7G and a nearly complete rewrite called Data ONTAP GX, based upon grid technology acquired from Spinnaker Networks. In 2010, these software product lines were merged into one OS - Data ONTAP 8, which folded Data ONTAP 7G onto the Data ONTAP GX cluster platform. Data ONTAP 8 has two distinct operating modes - 7-Mode and Cluster-Mode.