Abstract: A control method includes: converting a first write command received from a host to a second write command for each SSD belonging to an active pool, holding, with respect to the SSD, an end address of data written in the immediately prior second write command, and holding a discontinuity count, which is the number of times the end address and the write address for the newest second write command are discontinuous; and when the discontinuity count for a first SSD among the SSDs belonging to the active pool exceeds an upper limit value, copying a plurality of data, for all of the data held by the first SSD, to a region to which the write address is continuous in a second SSD that belongs to a standby pool and is initialized, deleting the first SSD from the active pool, and adding the second SSD to the active pool.

Abstract: A control method includes: converting a first write command received from a host to a second write command for each SSD belonging to an active pool, holding, with respect to the SSD, an end address of data written in the immediately prior second write command, and holding a discontinuity count, which is the number of times the end address and the write address for the newest second write command are discontinuous; and when the discontinuity count for a first SSD among the SSDs belonging to the active pool exceeds an upper limit value, copying a plurality of data, for all of the data held by the first SSD, to a region to which the write address is continuous in a second SSD that belongs to a standby pool and is initialized, deleting the first SSD from the active pool, and adding the second SSD to the active pool.

Abstract: A storage control device according to the present invention connected to a master disk device that stores data into a plurality of segments continuously, and a plurality of copy disk devices that are copy destinations of the data, the storage control device includes: a clone processing unit that, when receiving a copy instruction for one of the copy disk devices, repeats reading and writing of each of the segments in order of address to complete copy, and that, when a first copy disk that is the copy disk device other than a later copy disk that is the specified copy disk device is during copy when receiving the copy instruction, starts copy of the later copy disk from the segment during reading, and, after the completion of reading data of the segment, performs writing into both the first copy disk and the later copy disk.

Abstract: In some embodiments, a storage system may include, but is not limited to, a master volume, one or more link volumes, a master data read frequency determination unit, a load state determination unit, a copy target determination unit, a copy destination determination unit, and a copy controller. The copy target determination unit determines copy target data in the data stored in the master volume on the basis of the read frequency when the load state determination unit determines that the master volume is in a high load state. The copy destination determination unit determines at least one of the one or more link volumes as a copy destination link volume of the copy target data on the basis of the load state of each of the one or more link volumes. The copy controller copies the copy target data into the copy destination link volume.

Abstract: A storage control device according to the present invention connected to a master disk device that stores data into a plurality of segments continuously, and a plurality of copy disk devices that are copy destinations of the data, the storage control device includes: a clone processing unit that, when receiving a copy instruction for one of the copy disk devices, repeats reading and writing of each of the segments in order of address to complete copy, and that, when a first copy disk that is the copy disk device other than a later copy disk that is the specified copy disk device is during copy when receiving the copy instruction, starts copy of the later copy disk from the segment during reading, and, after the completion of reading data of the segment, performs writing into both the first copy disk and the later copy disk.

Abstract: Disclosed is a cache control device which makes it possible to, even when a failure is occurred in a cache, reduce a risk that information is lost due to the failure. A cache control device 1 includes a monitor unit 2 that monitors an occurrence of a failure of a plurality of storage devices which constitute a cache; and a control unit 3 that determines superiority or inferiority of the storage devices on the basis of life-span information and failure information which are related to the storage devices, and that changes a configuration of the cache in accordance with a result of the determination.

Abstract: Provided is a cache device which can minimize probability of data loss in a storage device in which write data and read data are separately cached. The cache device includes a write cache including a first storing unit that temporarily stores write data to be written in external storage devices and is predicted that a failure occurs at the first time and a second storing unit that temporarily stores the write data and is predicted that a failure occurs at the second time being later than the first time by a predetermined failure handling time or more, and a read cache including a third storing unit that temporarily stores read data to be read from the external storage devices.

Abstract: Provided is a cache device which can minimize probability of data loss in a storage device in which write data and read data are separately cached. The cache device includes a write cache including a first storing unit that temporarily stores write data to be written in external storage devices and is predicted that a failure occurs at the first time and a second storing unit that temporarily stores the write data and is predicted that a failure occurs at the second time being later than the first time by a predetermined failure handling time or more, and a read cache including a third storing unit that temporarily stores read data to be read from the external storage devices.

Abstract: Disclosed is a cache control device which makes it possible to, even when a failure is occurred in a cache, reduce a risk that information is lost due to the failure. A cache control device 1 includes a monitor unit 2 that monitors an occurrence of a failure of a plurality of storage devices which constitute a cache; and a control unit 3 that determines superiority or inferiority of the storage devices on the basis of life-span information and failure information which are related to the storage devices, and that changes a configuration of the cache in accordance with a result of the determination.

Abstract: An optical disc apparatus is designed to perform focus control of an objective lens of an optical pickup by generating a first focus error signal of an astigmatism method from a signal based on 0-order light of a reflected laser beam, as well as generating a second focus error signal of a differential astigmatism method from the signal based on the 0-order light and from a signal based on ±1-order light. The focus control of the objective lens is performed by the second focus error signal during recording or reproducing operation within a recording layer of an optical disc. The focus control is performed by the first focus error signal when a focus jump is performed in response to switching of the recording layer of the optical disc.

Abstract: The present invention relates to a method of production of frozen surimi not containing polyphosphate additives, in which carbonates and/or bicarbonates in combination with an organic acid salt are added to dehydrated minced fish meat to adjust the pH value to less than 7.5. The obtained surimi and surimi based products have an excellent whiteness and good elasticity (ashi).

Abstract: The present invention relates to a method of producing frozen surimi that does not contain a substantial amount of phosphate additives. According to the disclosed method, carbonates and/or bicarbonates in combination with an organic alkaline salt are added to dehydrated minced fish meat to adjust the pH value of the meat to less than 7.5, and the obtained surimi and surimi based products have an excellent whiteness and good elasticity.

Abstract: The present invention provides a method of frozen surimi, surimi based products and additives for dehydrated minced fish meat, in which reduced hydrolyzed starch is mixed with fish meat and the mixture frozen, and whereby said starch prevents the frozen surimi from freezing denaturation.

Abstract: The present invention provides an additive for frozen surimi containing branched dextrins and a surface active agent for food; the frozen surimi into which the additives for surimi of the present invention are added does not give off a fish smell or a bad smell after thawed, and the fish meat product such as kamaboko, chikuwa and the like which is produced from the frozen surimi has a bad smell.

Abstract: The present invention provides a dehydrating reagent which, in the production of frozen ground fish meat, enables the dehydration of fish meat after washing with water and improves the quality of frozen ground fish meat obtained. Such effects are achieved by the combination of magnesium and/or calcium ions and sodium ions.

Abstract: A process for producing a refrigerated minced flesh of fish, which comprises adding (a) a sugar and/or a sugar alcohol and (b) lactalbumin and/or blood plasma to a dehydrated fish flesh, mincing the mixture and then refrigerating the minced product.