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1. The inclusion of duplicate components or systems to provide backup or failover protection in case of a hardware or software failure.
2. A facility used to house computer systems and associated components, such as telecommunications and storage systems.
3. A computer or system that provides resources, data, services, or programs to other computers or clients over a network.
4. The process of creating virtual versions of physical computing resources, such as servers, storage devices, or network resources.
5. A type of server where all the physical resources are exclusively allocated to a single user or organization.