MULTIPLE PATH LOAD DISTRIBUTION FOR HOST COMMUNICATION WITH A TAPE STORAGE DRIVE

摘要

A method for a multiple port host to communicate with multiple tape drives is provided by requesting information associated with a particular tape. Information is provided that is indicative of availability status of a plurality of host ports. It is determined if there is a traffic load or a reservation load on an active host port. The active host port is reserved if there is not a traffic load or a reservation load on the active host port. Another method receives input indicative of read/write information from at least one tape drive at a host bus adapter. A host port count is increased, and a size of the read/write information is increased until the read/write information is not accepted by the host bus adapter. The host port count is decreased, and the size of the read/write information is decreased until the read/write information is accepted.