Integrated systems are combinations of server, storage and network infrastructure, sold with management software that facilitates the provisioning and management of the combined unit. The market for integrated systems can be divided into three broad categories of integrated systems, some of which overlap. These categories are: Integrated stack system (ISS) — Server, storage and network hardware integrated with application software to provide appliance or appliancelike functionality. Integrated infrastructure system (IIS) — Server, storage and network hardware integrated to provide shared compute infrastructure. Examples include VCE Vblock, HP ConvergedSystem and Lenovo Converged System (formerly PureFlex). Hyperconverged integrated system (HCIS) — Tightly coupled compute, network and storage hardware that dispenses with the need for a regular storage area network (SAN).
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