Patent ID: 7930506
Filing Date: 2011-04-19
Classification: G06F,Y10S

Abstract:
1. A management computer managing, via a network, a plurality of storage systems including a plurality of first storage devices and a plurality of second storage devices, the first storage devices and the second storage devices having a plurality of disk units which are configured into a plurality of physical storage regions for storing data, the first storage devices storing a first data file which stores data and the second storage devices storing a second data file which stores data and a storage controller which provides a first data file in the first storage devices to at least one of a plurality of second storage devices via a network, and a plurality of host computers storing data in either of the data files, said management computer comprising: a network interface to be coupled to the network; a processor coupled to the network interface; and a memory coupled to the network interface, wherein the memory holds property of the data files, and data property related to the data stored in a first data file, the data property including a predetermined time defined according to data property, wherein the processor checks an availability of the first data file during a period between a present time and the predetermined time which is later than the present time, and sends, to a storage system via a network, an instruction of migrating data to the second data file from the first data file according to the availability during the period, and wherein a property of the second data file is different from that of the first data file.