Abstract: A speed reduction apparatus supports a third crown gear that undergoes wave motion. The speed reduction apparatus includes: a first crown gear; a second crown gear; a third crown gear having opposing teeth facing the first crown gear and opposing teeth facing the second crown gear, back to back; and cam units and that cause the third crown gear to undergo wave motion. The cam units and have a first cam on the first crown gear side with respect to the third crown gear, and a second cam on the second crown gear side with respect to the third crown gear. The first and second cams sandwich the third crown gear. A first rolling element between the first cam and the third crown gear is capable of rolling motion, and a second rolling element between the second cam and the third crown gear is capable of rolling motion.

Abstract: Provided is a fall detection sensor for rammer capable of determining a fall state of a rammer, that operates with a large vibration and impact, with high accuracy, and stopping a motor (an engine or the like) immediately. The fall detection sensor for rammer includes an acceleration sensor (2), a low-pass filter (3), an integrator (4), a first comparator (5), a second comparator (6), and control means (7). The second comparator (6) compares wave patterns of input signals (x?-z?) with a plurality of types of of fall sample waves (FW) and non-fall sample waves (NFW) stored in advance. The second comparator (6) outputs a fall detection signal (fs) upon determining that the rammer has fallen when the similarity with the fall sample wave (FW) exceeds a threshold, and the second comparator (6) outputs a non-fall signal (nfs) upon determining that the rammer has not fallen when the similarity with the non-fall sample wave (NFW) exceeds a threshold.

Abstract: A primary storage system is equipped with a local storage subsystem having a mirror volume of a volume in a primary storage subsystem, and a remote storage subsystem having a mirror volume of the volume in the primary storage subsystem at a secondary site. When storing a write data from a host to a volume, the primary storage subsystem determines an SEQ# to be stored in a journal corresponding to the write request, creates a journal including the relevant SEQ# and a replica of the write data, and transmits the relevant SEQ# to the local storage subsystem, which creates a journal including the relevant SEQ# and stores it in its own journal volume. But when creation of the journal including the relevant SEQ# is stopped, the local storage subsystem creates a dummy journal including the relevant SEQ# but not including the write data.

Abstract: Example implementations described herein are directed to replication of data between different environments selectively while maintaining the performance of applications. The replication of data may be used to replicate data from a data center running a business critical application to another data center running an analytics application. In example implementations, a storage management program translates the IDs of database tables to storage locations, and the storage management program requests a storage system to replicate those storage locations to another storage system.

Abstract: A storage system capable of realizing off-load data copy among storage subsystems constituting an HA pair configuration is provided. Therefore, in an HA pair configuration where a first volume of a first storage subsystem and a second volume of a second storage subsystem respectively respond a same virtual ID to the host, when the first or the second storage subsystem receives an instruction of off-load data copy specifying a virtual ID as the copy destination from the host computer, either a first volume or a second volume is selected as a copy source volume according to a position of a copy destination volume, and data is copied from the selected copy source volume to the copy destination volume.

Abstract: A laser welding device includes a laser irradiation unit, a visible light sensor and a control unit. The laser irradiation unit irradiates a laser beam. The visible light sensor detects an emission intensity of visible light that is emitted from a welded portion. The control unit can freely switch the operation of the laser irradiation unit between a welding mode for welding a plurality of metal members to each other by irradiating laser beam and an inspection mode for irradiating the laser beam again onto the welded portion as an inspection light. After the welding the metal members, the control unit switches the laser irradiation unit to the inspection mode to irradiate the laser beam again onto the welded portion as an inspection light. The control unit detects if a hole is generated after welding based on changes in the emission intensity of the visible light.

Abstract: A storage system according to one preferred embodiment of the present invention is composed of at least a first storage subsystem and a second storage subsystem. Write data from a host computer is duplicated to a first volume of the first storage subsystem and a second volume of the second storage subsystem, and the host computer is composed to be able to access both the first volume and the second volume. Attribute information which is information related to an order of write and/or write capability is set for each volume, and when an access command to the volume is received from the host computer, the storage subsystem determines whether I/O to the first volume and/or the second volume is required or not based on the attribute set for each volume.

Abstract: Provided is an information storage system including a first storage apparatus configured to provide a first logical volume, a second storage apparatus configured to provide a second logical volume, and a quorum accessed from the first storage apparatus and the second storage apparatus and including information regarding states of the first storage apparatus and the second storage apparatus. The second storage apparatus is configured to, after detecting communication failure with the quorum, halt use of the quorum and check communication with the first storage apparatus for failure before responding to the host for each of read and write commands sent from the host.

Abstract: A storage system comprises multiple storage apparatuses and the multiple storage apparatuses provide a host system with a virtual volume in which multiple logical volumes are virtualized into one. When a first storage apparatus has detected a first event, the first storage apparatus changes the status of a first resource. Thereafter, the first storage apparatus sends a notice of the status change with respect to a first logical volume to a second storage apparatus comprising a second logical volume which is the basis of a virtual volume associated with the first logical volume, when the first storage apparatus has detected a second event which signifies that the host system is informed, in the future, of the status of the first resource. The second storage apparatus receives the notice and configures the status change based on the received notice.

Abstract: A photosensitive resin composition for flexographic printing, comprising at least (A) a hydrophilic copolymer, (B) an elastomer, (C) a polymerizable unsaturated monomer, and (D) a photopolymerization initiator, wherein, in a cross-section of a cured product of the resin composition, a phase area of a phase comprising the hydrophilic copolymer (A), SA, is 15% or more and 60% or less, and a proportion of the phase having a phase area of 3 ?m2 or more and less than 100 ?m2 is 20 (% by area) or more of the phase comprising the hydrophilic copolymer (A).

Abstract: A storage system includes a plurality of storage nodes. The storage node includes: one or more storage devices which respectively provide a storage area; and one or more control software which read/write requested data from/into the corresponding storage device according to a request from a higher-level device, wherein each of the control software retains predetermined configuration information required for reading/writing requested data from/into the corresponding storage device according to a request from the higher-level device, wherein a plurality of the control software are managed as a redundancy group, and the configuration information retained in each of the control software belonging to the same redundancy group is synchronously updated, and wherein the plurality of control software configuring the redundancy group are each deployed in respectively different storage nodes so as to distribute a load of each of the storage nodes.

Abstract: Example implementations are directed to systems and methods for how an application defines storage infrastructure. Such example implementations described herein may be used by application programmers to develop applications quickly and flexibly, without having to communicate with storage administrators to make storage infrastructure changes. In an example implementation, there is an application configured to perform storage management operations that change the storage resources allocated to the application.

Abstract: Examples implementations described herein involve systems and methods wherein the storage software is configured to consider the capabilities of the underlying hardware to determine the caching data method at run time. Some examples of capabilities that are considered in the example implementations include whether non-volatile memory (NVM) is available and how much NVM is available. Some examples of caching methods used include using both dynamic random access memory (DRAM) and NVM to cache write data and using only NVM to cache write data.

Abstract: Fault-tolerance is improved by duplicating data and update information of that data. A storage system has a first storage apparatus that is connected to a host computer, and includes a plurality of first data volumes and a first journal volume, a second storage apparatus that is connected to the host computer and the first storage apparatus, and includes a plurality of second data volumes for storing duplicated data of each of the plurality of first data volumes, and a second journal volume for storing the duplicated data of the first journal volume, a third storage apparatus that is connected to the first storage apparatus, and includes a plurality of third data volumes that configure a remote copy pair with the plurality of first data volumes by using the journal data received from the first storage apparatus, and a fourth storage apparatus that is connected to the third storage apparatus.

Abstract: A speed reduction apparatus supports a third crown gear that undergoes wave motion. The speed reduction apparatus includes: a first crown gear; a second crown gear; a third crown gear having opposing teeth facing the first crown gear and opposing teeth facing the second crown gear, back to back; and cam units and that cause the third crown gear to undergo wave motion. The cam units and have a first cam on the first crown gear side with respect to the third crown gear, and a second cam on the second crown gear side with respect to the third crown gear. The first and second cams sandwich the third crown gear. A first rolling element between the first cam and the third crown gear is capable of rolling motion, and a second rolling element between the second cam and the third crown gear is capable of rolling motion.

Abstract: A storage apparatus includes: a plurality of flash memory devices each including: a plurality of flash memory chips each including a plurality of physical blocks being data erasure units; and a flash controller configured to provide logical storage areas by associating at least one of the plurality of physical blocks with the logical storage areas; and a RAID controller configured to: manage a plurality of virtual drives each including a part of the logical storage areas provided by each of the plurality of flash memory devices; and control the plurality of virtual drives as a RAID group.

Abstract: A source remote copy configuration in a source storage system is migrated to a destination storage system as a destination remote copy configuration. The destination primary storage apparatus of the destination storage system defines a virtual volume mapped to the primary volume provided by the source primary storage apparatus which is a storage area of the virtual volume; takes over a first identifier of the primary volume to the virtual volume; transfers, when the virtual volume receives an access request, the access request to the source primary storage apparatus to write data in the primary volume; and takes over the first identifier from the virtual volume to another primary volume provided by the destination primary storage apparatus, after completion of copy of data from primary volume of the source primary storage apparatus into primary volume of the destination primary storage apparatus and secondary volume of the destination secondary storage apparatus.

Abstract: A storage system manages control information, which is information related to responses corresponding to prescribed types of commands, for each of a plurality of logical units associated with a logical device, said logical units being provided to one or more host systems. The prescribed types of commands indicating the logical units provided to a first host system, which is one of the one or more host systems, are received from the first host system by the storage system. Responses based on the control information corresponding to the logical units indicated by the received prescribed types of commands are returned to the first host system by the storage system as responses to the received prescribed types of commands.

Abstract: Provided is a speed reduction or speed increasing apparatus where the rotational stiffness can be increased, including a housing, a first crown gear, a support unit placed radially outward of the first crown gear to support the first crown gear to be capable of wave motion and incapable of rotation with respect to the housing, a second crown gear configured to be rotatable with respect to the housing, the second crown gear having a different number of teeth from the first crown gear, the second crown gear facing the first crown gear, and a cam unit configured to incline the first crown gear with respect to the second crown gear in such a manner that the first crown gear engages with the second crown gear, and to cause the first crown gear to undergo wave motion in such a manner that the location of contact moves.

Abstract: Provided is a control method for a plurality of storage apparatuses that perform a migration from a pre-migration volume group to a post-migration volume group. The plurality of storage apparatuses are configured to accept a write command directed to any one of a plurality of volumes in the pre-migration volume group and the post-migration volume group when the migration is being processed. The control method includes writing write data of the write command to all of the plurality of volumes in a predetermined order, writing the write data to a last volume last among the plurality of volumes, and writing the write data to volumes different from the last volume after individually obtaining exclusive locks and, after completion of the writing the write data to the last volume, releasing the exclusive locks.