A server storage system has a plurality of logical partitions obtained by logically dividing at least part of a plurality of resources including a plurality of types of resource. The plurality of resources include a plurality of server resources including a plurality of types of server resource provided in a server system and a plurality of storage resources including a plurality of types of storage resource provided in a storage system. A resource allocated to each of two or more logical partitions includes at least one of an exclusively allocated resource and a commonly allocated resource. The type of each of a plurality of resources exclusively allocated to each of the two or more logical partitions varies in accordance with a load characteristic of a load on the logical partition.