Abstract: Provided is a host computer which is connected to a system resource through n (n?2) number of paths. The host computer includes: a plurality of logical partitions accessible to the system resource; an allocation unit that allocates the paths to the plurality of logical partitions; and an allocation table. The allocation table is user configurable and stores, in a correlated manner, information indicating the logical partitions and information capable of indicating the number of paths to be allocated to the logical partitions indicated by the information. The allocation unit allocates the paths to the logical partitions in accordance with the allocation table. This makes it possible to secure the I/O response also for logical partitions having a small amount of I/O.

Abstract: In a multipath system whereby a host computer having multiple logical partitions is connected to a system resource via multiple paths, and the multiple logical partitions share the system resource, I/O responsiveness is ensured even for the logical partition with less amount of I/O. A host computer of the present invention that is connected to the system resource via n (n>=2) number of paths includes multiple logical partitions that are accessible to the system resource and an assignment unit for assigning paths to the multiple logical partitions. The assignment unit assigns at least m (1<=m<n) number of path to one logical partition.

Abstract: Provided is a host computer which is connected to a system resource through n (n?2) number of paths. The host computer includes: a plurality of logical partitions accessible to the system resource; an allocation unit that allocates the paths to the plurality of logical partitions; and an allocation table. The allocation table is user configurable and stores, in a correlated manner, information indicating the logical partitions and information capable of indicating the number of paths to be allocated to the logical partitions indicated by the information. The allocation unit allocates the paths to the logical partitions in accordance with the allocation table. This makes it possible to secure the I/O response also for logical partitions having a small amount of I/O.