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HBA – Host Bus Adapter

Webopedia Staff
Last Updated May 24, 2021 7:44 am

HBA is short for host bus adapter.

The host bus adapter is an I/O adapter that sits between the host computer’s bus and the Fibre Channel loop and manages the transfer of information between the two channels. In order to minimize the impact on host processor performance, the HBA performs many low-level interface functions automatically or with minimal processor involvement.