Adapter storage system and method

The invention relates to an adapter storage system and method. Systems and methods relate to a bus adapter for a storage network. The bus adapter includes a context memory that includes a first storage device for a non-cacheable Interchange Resource Indicator (XRI) and a second storage device for a cacheable XRI. The bus adapter further comprises a host support storage unit. The host support storage unit is configured to, based on an input/output phase, first in until a limit, a region of a virtual context address associated with the cacheable XRI indicator, a protocol associated with the cacheable XRI, a region of the virtual context address associated with the cacheable XRI indicator, and a region of the virtual context address associated with the cacheable XRI indicator. At least one of a size of a transaction or work queue information is used to provide access to different tiers of memory that exist locally or externally in a host memory extension using several cache subunits and with the ability to perfo