The company is a leading provider of RAID (redundant array of independent disks) storage systems. Banks, government agencies, ISPs, manufacturers, and retailers use EMC's systems to store and retrieve massive amounts of information.
It also markets a line of network attached storage (NAS) file servers, and a wide array of software designed to manage, protect, and share data. EMC is the majority owner of virtualization specialist VMware, and its RSA division provides security software. The company makes more than half of its sales in the US.