STORAGE CONTROL PROGRAM, STORAGE SYSTEM, STORAGE CONTROL DEVICE, AND STORAGE CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To obtain general quality of a storage area by considering a plurality kinds of quality about the storage area when allocating the storage area of data in a storage system. SOLUTION: An X-axis is an evaluation value with a distance to a slice from a management node as a reference. A higher percentage indicates a shorter distance. A Y-axis is an evaluation value with performance of a disk node as a reference. The performance means a writing speed into the slice. A higher percentage indicates that the performance is better, that is, that the writing speed into a physical disk is faster. A Z-axis is an index value with use frequency of the slice as a reference. A higher percentage indicates that the slice is more disused. COPYRIGHT: (C)2011,JPO&INPIT