The use of multiple computers, typically PCs or UNIX workstations, multiple storage devices, and redundant interconnections, to form what appears to users as a single highly available system. 

A server cluster is a group of independent servers running on a similar OS, and working together as a single system to provide a higher level of availability, reliability, and scalability than can be obtained by using a single computer. When a failure occurs on one computer in a cluster, resources are redirected and the workload is redistributed to another computer in the cluster. You can use server clusters to ensure that users have constant access to important server-based resources. Server clusters are designed for applications that have long-running in-memory state or frequently updated data. Typical uses for server clusters include file servers, print servers, database servers, and messaging servers.

A feature in Windows Server in which shared disks are concurrently accessible to all nodes within a failover cluster. It was first introduced in Windows Server 2008 R2 as a way to simplify storage with clustered Hyper-V virtual machines (VMs).

A clustered NAS system is a distributed file system that runs concurrently on multiple NAS nodes. Clustering provides access to all files from any of the clustered nodes regardless of the physical location of the file. 

The use of multiple computers, typically PCs or UNIX workstations, multiple storage devices, and redundant interconnections, to form a single highly available system. Cluster computing can be used for load balancing as well as for high availability. 

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The IBM® Content Manager OnDemand family can automatically capture and store high volumes of outbound statements and correspondence as well as offer powerful search and fast retrieval options with a web client solution for multiple browsers, mobile devices, and desktop environments. It reduces operating costs by electronically capturing, indexing, archiving, and delivering reports, statements, and other computer-generated output; improves customer service by providing customers and call center representatives with fast, online access to customer bills, statements, and invoices; and increases competitive advantage by turning customer and back office data into actionable information

A system used to manage the content of a Web site. Typically, a CMS consists of two elements: the content management application (CMA) and the content delivery application (CDA). 

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