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Tri-Mode

​Tri-mode is a mode redundancy technique for building fault tolerant information systems1. It enables the execution of a process on three systems simultaneously, where the resulting output is cast as a single output by a voting system1. Tri-mode controller is a hardware component that establishes connectivity between the host server and the drive backplane, supporting SAS, SATA and NVMe storage protocols2. It features a storage processor, cache memory and an interface connection to the storage devices2.