公开(公告)号：US20240411474A1

公开(公告)日：2024-12-12

申请号：US18207950

申请日：2023-06-09

Applicant: HITACHI, Ltd.

Inventor： Takanobu SUZUKI ,  Tomohiro KAWAGUCHI ,  Akiyoshi TSUCHIYA

IPC: G06F3/06

Abstract: Systems and methods described herein can involve, for receipt of a write request from a server to a first storage system associated with a mounted volume having an attribute of read only or read/write, the write request processed by a second storage system, the second storage system setting the write destination of write data associated with the write request to the first storage system or the second storage system based on the attribute.

公开(公告)号：US20230062858A1

公开(公告)日：2023-03-02

申请号：US17459841

申请日：2021-08-27

Applicant: Hitachi, Ltd.

Inventor： Akiyoshi TSUCHIYA ,  Tomohiro KAWAGUCHI

IPC: G06F3/06

Abstract: Example implementations described herein involve systems and methods which automatically determine volumes to be replicated for disaster recovery based on the execution priority of an application which uses the volumes. Such example implementations can involve systems and methods involving creating a volume in a first storage system for each of one or more containers newly launched on one or more servers managing a container orchestrator; and establishing replication of the volume for the each of the newly launched one or more containers to a second storage system in order from highest container priority to lowest container priority.

公开(公告)号：US20210105322A1

公开(公告)日：2021-04-08

申请号：US16815826

申请日：2020-03-11

Applicant: HITACHI, LTD.

Inventor： Yuki SAKASHITA ,  Hideo SAITO ,  Takaki NAKAMURA ,  Akiyoshi TSUCHIYA ,  Tsukasa SHIBAYAMA ,  Azusa JIN

IPC: H04L29/08 ,  H04L12/26

Abstract: A highly accurate data migration pattern is decided on the bases of usages of a plurality of kinds of resources and by taking influence of execution of data migration on each resource into consideration.
In a distributed storage system, a monitor acquires a per-period usage of each of the plurality of kinds of the resources per data, a performance simulator estimates a per-period usage of each resource on a migration destination node when the data is migrated by using the acquired per-data resource usage and calculates an estimate of a latency from the estimated usage of each resource and an optimizer decides a migration pattern of the data on the basis of the estimate of the latency.

公开(公告)号：US20180018347A1

公开(公告)日：2018-01-18

申请号：US15543935

申请日：2015-01-30

Applicant: Hitachi, Ltd.

Inventor： Kazuhito YOKOI ,  Go KOJIMA ,  Takuya ODA ,  Yasushi MIYATA ,  Masanori TAKATA ,  Hitoshi KAMEI ,  Akiyoshi TSUCHIYA

IPC: G06F17/30

CPC classification number: G06F16/188 ,  G06F16/13 ,  G06F16/16 ,  G06F16/1827 ,  G06F16/1873

Abstract: The purpose of the present invention is, in a file storage, to shorten an access response time to shared data. When a file storage apparatus receives a command for a specific manipulation of a file system, a specific apparatus determines, based on a state of the file system and a manipulation history, whether or not an unapplied manipulation affects a target of the specific manipulation, the unapplied manipulation being a manipulation which has been previously executed by another file storage apparatus among a plurality of file storage apparatuses and which has not been applied to the file system. When it is determined that the unapplied manipulation affects the target of the specific manipulation, the file storage apparatus applies the unapplied manipulation to the file system, executes the specific manipulation on the file system, and transmits, to a cloud storage apparatus, manipulation information which represents the specific manipulation.

公开(公告)号：US20240394147A1

公开(公告)日：2024-11-28

申请号：US18201673

申请日：2023-05-24

Applicant: HITACHI, Ltd.

Inventor： Akiyoshi TSUCHIYA

IPC: G06F11/14

Abstract: Systems and methods described herein can involve managing volume management information indicative of a relationship between an application and a volume used by the application; for receipt of a first request to make the application ready for takeover to another location, updating the volume management information to indicate that another volume of the another location is associated with the application. For receipt of a second request to conduct volume attachment for the application, the systems and methods can involve identifying one or more volumes associated with the application based on the volume management information; and attaching an identified volume from the identified one or more volumes to the application.

公开(公告)号：US20240241660A1

公开(公告)日：2024-07-18

申请号：US18154552

申请日：2023-01-13

Applicant: Hitachi, Ltd.

Inventor： Akiyoshi TSUCHIYA ,  Tomohiro KAWAGUCHI ,  Takanobu SUZUKI

IPC: G06F3/06

CPC classification number: G06F3/0647 ,  G06F3/0617 ,  G06F3/0665 ,  G06F3/067

Abstract: A method for application migrating from a first cluster to a second cluster. The method may include detecting application migration request from the first cluster to the second cluster for performing application migration; identifying first volumes associated with the first cluster that are used by the application; establishing data copying from the first volumes of a first storage device associated with the first cluster to second volumes of a second storage device associated with the second cluster; determining if a copy condition is met based on the data copying; for meeting the copy condition, stopping the application on the first cluster; flushing uncopied data from the first volumes to the second volumes; determining whether the flushing of the uncopied data is completed; and for the flushing of the uncopied data being completed, deploying the application on the second cluster.

公开(公告)号：US20220236879A1

公开(公告)日：2022-07-28

申请号：US17160199

申请日：2021-01-27

Applicant: Hitachi, Ltd.

Inventor： Akiyoshi TSUCHIYA ,  Tomohiro KAWAGUCHI

IPC: G06F3/06

Abstract: Example implementation described herein are directed to a mechanism to provision data volume which requires remote data copy between separated clusters, especially for the container platform. For a request to create a volume made to the clusters, example implementations can involve creating a first volume in a first cluster; obtaining volume information of a corresponding second volume from a second cluster; configuring the first volume and the corresponding second volume in the second cluster to have a remote copy relationship based on the obtained volume information; and setting access from the container to the first volume and the corresponding second volume based on the remote copy relationship.

公开(公告)号：US20210272012A1

公开(公告)日：2021-09-02

申请号：US16803558

申请日：2020-02-27

Applicant: Hitachi, Ltd.

Inventor： Hiroyuki OSAKI ,  Masanori TAKADA ,  Akiyoshi TSUCHIYA

IPC: G06N20/00 ,  G06F11/34 ,  G06F8/71 ,  G06F16/901 ,  G06F9/455

Abstract: Example implementations described herein are directed to searching ML models to facilitate IO load prediction. Even if there is no existing ML model applicable to the underlying container, example implementations described herein obtain the ML model for the nearest container. Through such example implementations, the underlying systems can reduce the total ML models maintained for the prediction of IO load and can enhance ML models with enough learning data for each ML model.

公开(公告)号：US20180109611A1

公开(公告)日：2018-04-19

申请号：US15540045

申请日：2015-01-30

Applicant: Hitachi, Ltd.

Inventor： Misato YOSHIDA ,  Masanori TAKATA ,  Akiyoshi TSUCHIYA ,  Hitoshi KAMEI

IPC: H04L29/08 ,  G06F17/30

CPC classification number: H04L67/1095 ,  G06F11/00 ,  G06F16/176 ,  G06F16/1827 ,  G06F16/1873 ,  H04L67/1097

Abstract: (A) and (B), described hereinafter, are carried out for objects which differ between an reflection source namespace and a reflection destination namespace, with respect to either: a center node in a migration, which applies an update of a first local namespace which a first edge node (any edge node) provides to a center namespace; or a second edge node (any edge node other than the first edge node) in a synchronization, which applies an update of the center namespace to a second local namespace which the second edge node provides. Specifically, either the center node or the second edge node: (A) determines whether the situation with respect to the differing objects corresponds to a conflict case among defined conflict cases; and (B) if the result of the determination in (A) is affirmative, executes a process according to a confliction resolution policy which is associated with the corresponding conflict case.

公开(公告)号：US20210278973A1

公开(公告)日：2021-09-09

申请号：US16812050

申请日：2020-03-06

Applicant: Hitachi, Ltd.

Inventor： Akiyoshi TSUCHIYA ,  Masanori TAKADA ,  Hiroyuki OSAKI

IPC: G06F3/06 ,  G06F9/48

Abstract: Embodiments described herein are directed to volume creation such that the volume is created in the storage system that is closest to the group of servers that the container is likely to be launched. Through such embodiments, the volume can be created or migrated in anticipation to a launch or a relaunch of a container.