Abstract: A light control sheet including a first transparent electrode layer, a second transparent electrode layer, a light control layer including a resin layer which is formed between the first and second transparent electrode layers and includes a liquid crystal composition in holes formed in the resin layer, the liquid crystal composition including liquid crystal molecules, and a first alignment layer formed between the first transparent electrode layer and the light control layer such that a haze of the light control layer is increased upon application of a voltage to the first transparent electrode layer. The light control layer includes a first high-density portion and a low-density portion, and the first high-density portion is in contact with the first alignment layer and includes the liquid crystal composition at a density higher than a density of the liquid crystal composition in the low-density portion per unit thickness of the light control layer.

Abstract: This invention aims to optimize an entire storage system by equalizing the access counts in appropriate units. When migrating data in pool volumes to equalize the data access counts, which data migration—data migration in units of pages or data migration in units of volumes—is most appropriate is judged based on the information stored in an access information table storing access information, which is the information about the access counts for the data stored in the disk drives and, based on the judgment, data is migrated in units of pages or volumes so that the data access counts are equalized among groups. The data migration is repeated until the data access counts are equalized among the groups.

Abstract: [Object ] This invention aims to optimize an entire storage system by equalizing the access counts in appropriate units. [Solution] When migrating data in pool volumes to equalize the data access counts, which data migration—data migration in units of pages or data migration in units of volumes—is most appropriate is judged based on the information stored in an access information table storing access information, which is the information about the access counts for the data stored in the disk drives and, based on the judgment, data is migrated in units of pages or volumes so that the data access counts are equalized among groups. The data migration is repeated until the data access counts are equalized among the groups.

Abstract: A device which is subject to management by the management unit comprises a storage region for storing device status information, which is information indicating a status relating to the device, and control sections for sending the device status information stored in this storage region to the management unit.

Abstract: A device which is subject to management by the management unit comprises a storage region for storing device status information, which is information indicating a status relating to the device, and control sections for sending the device status information stored in this storage region to the management unit.