Abstract: An example of the present invention is a storage system comprising a first real storage apparatus including a plurality of real resources. The first real storage apparatus includes: real resource groups allocated to a plurality of virtual storage apparatuses; first management information for associating virtual resource identifiers individually assigned to real resources in a namespace independently defined for each of the plurality of virtual storage apparatuses with real resource identifiers individually assigned to the real resources in a namespace defined for the first real storage apparatus; and a controller for receiving a command including a designation with a virtual resource identifier, converting the virtual resource identifier in the command into a real resource identifier with reference to the first management information, and processing the command with the converted real resource identifier.

Abstract: Technique for decision criterion for determining a transfer destination layer in rearrangement processing. A computer configures rearrangement reference information showing whether an access characteristic related to a task executed on a plurality of host computing devices is considered as a decision criterion for transfer destination determination in rearrangement processing of transferring data between actual storage areas of physical storage devices of different response performance. Storage subsystem refers to the rearrangement reference information and, based on an access characteristic of the plurality of computing devices with respect to the actual storage areas assigned to the plurality of computing devices, executes rearrangement processing of transferring data stored in the actual storage areas to different actual storage areas in the physical storage devices of different response performance.

Abstract: To reduce the number of data copies between volume pools by preventing occurrence of unevenness of resource usage between the pools, provided is a computer system including: storage apparatus; and host computer coupled to the storage apparatus, the storage apparatus including physical storage device, the storage apparatus holding information associating virtual volumes and pools each including real storage areas of the physical storage device, the storage apparatus allocating, to the virtual volume of a write destination designated by the host computer, the real storage areas included in each of the plurality of pools corresponding to the virtual volume of the write destination, and storing the data therein, the computer system being configured to: determine, based on the information held by the storage apparatus, orders of priority of the volumes of the write destination by the host computers; and hold the determined orders of priority.

Abstract: In a vertical through hole of a rotational shaft, a first protrusion portion and a second protrusion portion protruding from an inner peripheral surface of the vertical through hole are provided in an axial direction of the though hole to form a storage area for storing oil, and discharge holes for directly discharging oil flowing over the first protrusion portion into the transaxle casing are provided in parallel with the cooling holes.

Abstract: The present invention provides a technique of suitably configuring a decision criterion for determining a transfer destination layer in rearrangement processing according to a task type and operation status and preventing performance degradation caused by arranging task data requiring a high response to a lower layer. At least one computing device (or management computing device or each host computing device) of a plurality of computing devices configures rearrangement reference information showing whether an access characteristic related to a task executed on a plurality of host computing devices is considered as a decision criterion for transfer destination determination in rearrangement processing of transferring data between actual storage areas of physical storage devices of different response performance.

Abstract: The present invention provides a technique of suitably configuring a decision criterion for determining a transfer destination layer in rearrangement processing according to a task type and operation status and preventing performance degradation caused by arranging task data requiring a high response to a lower layer. At least one computing device (or management computing device or each host computing device) of a plurality of computing devices configures rearrangement reference information showing whether an access characteristic related to a task executed on a plurality of host computing devices is considered as a decision criterion for transfer destination determination in rearrangement processing of transferring data between actual storage areas of physical storage devices of different response performance.

Abstract: To reduce the number of data copies between volume pools by preventing occurrence of unevenness of resource usage between the pools, provided is a computer system including: storage apparatus; and host computer coupled to the storage apparatus, the storage apparatus including physical storage device, the storage apparatus holding information associating virtual volumes and pools each including real storage areas of the physical storage device, the storage apparatus allocating, to the virtual volume of a write destination designated by the host computer, the real storage areas included in each of the plurality of pools corresponding to the virtual volume of the write destination, and storing the data therein, the computer system being configured to: determine, based on the information held by the storage apparatus, orders of priority of the volumes of the write destination by the host computers; and hold the determined orders of priority.