摘要:
PROBLEM TO BE SOLVED: To adequately select vicinity of a high load region when transferring data in the high load range and its vicinity from an HDD300 to an SSD200.SOLUTION: A data collection part 111 connects a segment in which the number of IO exceeds threshold p within adjoining distance s, and extracts a range from the connected segment to its outside s as an n_segment. Then, a work load analyzer 113 determines a target for transferring data from an HDD300 to an SSD200 using the n_segment as a unit.
摘要:
PROBLEM TO BE SOLVED: To provide an embedded multimedia card that provides data reliability for an OS image stored in a memory card, and an OS image writing method thereof.SOLUTION: A memory card 200 includes: a nonvolatile memory device 220 comprising a first memory area and a second memory area; and a memory controller. The memory controller includes: a first register 212 configured to store reliable mode information; and a second register 214 configured to store operating system image information. In accordance with the reliable mode information and whether an operating system image for which a write request is performed by a host matches the operating system image information, the memory controller blocks migration of the operating system image from the first memory area to the second memory area.
摘要:
PROBLEM TO BE SOLVED: To optimize access performance to data stored before and after the change of system configurations.SOLUTION: A storage system SM includes: a first storage casing 101; a second control unit 121; and a second storage unit 122. The first storage casing 101 has a first control unit 111 and a first storage unit 112. The first storage unit 112 has a first storage 113 and a first storage control part 114. The second storage unit 122 has a second storage 123 and a second storage control part 124. The first control unit 111 is configured to, in accordance with the degree of deviation generated between the storage capacity of a storage region being allocated in the first storage 113 and the storage capacity of a storage region being allocated in the second storage 123, perform the rearrangement control of the storage region being allocated on the basis of allocation information including the allocation situation of the storage regions in the first storage 113 and the second storage 123.
摘要:
PROBLEM TO BE SOLVED: To reduce a processing load related to a physical server for managing a plurality of migrations of a virtual machine.SOLUTION: By a first physical device which starts a first virtual machine, a virtual machine migration method includes processing to receive first migration information including a first migration instruction related to the first virtual machine and a second migration instruction related to a second virtual machine, processing to accept data of the first virtual machine, and transfer processing to transfer second migration information including the second migration instruction to a second physical device operating the second virtual machine.