公开(公告)号：US20120304006A1

公开(公告)日：2012-11-29

申请号：US13570700

申请日：2012-08-09

申请人： Tomohiro KAWAGUCHI

发明人： Tomohiro KAWAGUCHI

IPC分类号： G06F11/14

CPC分类号： G06F11/2082 ,  G06F11/1456 ,  G06F11/1464 ,  G06F11/1469 ,  G06F11/2066 ,  G06F11/2069 ,  G06F11/2071 ,  G06F2201/84

摘要： The local storage performs remote copy to the remote storage. For low traffic failback remote copy, the remote storage performs a delta copy to the local storage, the delta being the difference between the remote storage and local storage. The local storage backs up snapshot data. The remote storage resolves the difference of the snapshot of the local storage and the remote storage. The difference resolution method can take one of several approaches. First, the system informs the timing of snapshot of the local storage to the remote storage and records the accessed area of the data. Second, the system informs the timing of snapshot of the local storage to the remote storage, and the remote storage makes a snapshot and compares the snapshot and remote copied data. Third, the system compares the local data and remote copy data with hashed data.

摘要翻译： 本地存储对远程存储执行远程复制。 对于低流量故障恢复远程副本，远程存储对本地存储执行增量副本，增量是远程存储和本地存储之间的差异。 本地存储备份快照数据。 远程存储解决了本地存储和远程存储的快照的差异。 差分解决方法可以采取几种方法之一。 首先，系统将本地存储的快照时间通知给远程存储，并记录访问的数据区域。 第二，系统通知本地存储到远程存储的快照的时间，远程存储进行快照并比较快照和远程复制的数据。 第三，系统将本地数据和远程复制数据与散列数据进行比较。

公开(公告)号：US20110208909A1

公开(公告)日：2011-08-25

申请号：US12711643

申请日：2010-02-24

申请人： Tomohiro KAWAGUCHI

发明人： Tomohiro KAWAGUCHI

IPC分类号： G06F12/00 ,  G06F12/16 ,  G06F12/08

CPC分类号： G06F3/065 ,  G06F3/0611 ,  G06F3/067 ,  G06F11/1458

摘要： According to one aspect of the invention, a method of controlling a storage system comprises storing data in a first volume in the storage system which has volumes including the first volume and a plurality of second volumes; prohibiting write I/O (input/output) access against the first volume after storing the data in the first volume; performing subsequent write requests received by the storage system against the second volumes in the storage system after storing the data in the first volume, each write request having a target volume which is one of the second volumes; and in response to each one write request of the write requests, determining whether the target volume of the one write request is write prohibited or not, and performing the one write request only if the target volume is not write prohibited.

摘要翻译： 根据本发明的一个方面，一种控制存储系统的方法包括将数据存储在具有包括第一卷和多个第二卷的卷的存储系统中的第一卷中; 在将数据存储在第一卷之后禁止对第一卷写入I / O（输入/输出）访问; 在将数据存储在第一卷之后，执行存储系统对存储系统中的第二卷接收的后续写请求，每个写请求具有作为第二卷之一的目标卷; 并且响应于写入请求的每一个写入请求，确定一个写入请求的目标卷是否被禁止写入，并且仅在目标卷不被写入禁止时才执行该写入请求。

公开(公告)号：US20090125680A1

公开(公告)日：2009-05-14

申请号：US12128974

申请日：2008-05-29

申请人： Kenta NINOSE ,  Tomohiro KAWAGUCHI ,  Yoshiaki EGUCHI

发明人： Kenta NINOSE ,  Tomohiro KAWAGUCHI ,  Yoshiaki EGUCHI

IPC分类号： G06F12/00

CPC分类号： G06F3/0629 ,  G06F3/0608 ,  G06F3/0614 ,  G06F3/0617 ,  G06F3/0631 ,  G06F3/0665 ,  G06F3/0689 ,  G06F11/1092 ,  G06F11/2082

摘要： The present invention maintains mapping information denoting which real areas have been allocated to which virtual areas for a virtual volume, the capacity of which is dynamically expanded. The present invention also maintains real area management information denoting which real areas have been allocated to which virtual areas. The real area management information is referenced to determine whether or not a low-reliability real area, which is a real area for which reliability has been lowered by the occurrence of a failure in a certain physical storage device, and which belongs to a RAID group comprising this certain physical storage device, has been allocated to a virtual area. A data restore process is not carried out for a low-reliability real area that has not been allocated to a virtual area, but a data restore process is carried out for a low-reliability real area that has been allocated to a virtual area.

摘要翻译： 本发明保持映射信息，其指示哪个实际区域已被分配给虚拟卷的哪个虚拟区域，其容量被动态扩展。 本发明还维护表示哪些实际区域已被分配到哪些虚拟区域的实际区域管理信息。 参考实际区域管理信息来确定由于某个物理存储装置中发生故障而导致可靠性降低的真实区域，并且属于RAID组的低可靠性实际区域 包括该特定的物理存储设备已被分配给虚拟区域。 对于尚未分配给虚拟区域的低可靠性实际区域，不执行数据恢复处理，而是对已经分配给虚拟区域的低可靠性实际区域执行数据恢复处理。

公开(公告)号：US20120047346A1

公开(公告)日：2012-02-23

申请号：US12860086

申请日：2010-08-20

申请人： Tomohiro KAWAGUCHI

发明人： Tomohiro KAWAGUCHI

IPC分类号： G06F12/02 ,  G06F12/00

CPC分类号： G06F12/0223 ,  G06F3/0605 ,  G06F3/0631 ,  G06F3/0647 ,  G06F3/0685

摘要： A system comprises a first storage system including a first storage controller, which receives input/output commands from host computers and provides first storage volumes to the host computers; and a second storage system including a second storage controller which receives input/output commands from host computers and provides second storage volumes to the host computers. A first data storing region of one of the first storage volumes is allocated from a first pool by the first storage controller. A second data storing region of another one of the first storage volumes is allocated from a second pool by the first storage controller. A third data storing region of one of the second storage volumes is allocated from the first pool by the second storage controller. A fourth data storing region of another one of the second storage volumes is allocated from the second pool by the second storage controller.

摘要翻译： 系统包括第一存储系统，其包括第一存储控制器，其从主计算机接收输入/输出命令并向主机提供第一存储卷; 以及包括第二存储控制器的第二存储系统，所述第二存储控制器从主机计算机接收输入/输出命令，并向所述主计算机提供第二存储卷。 通过第一存储控制器从第一池分配第一存储卷之一的第一数据存储区域。 第一存储控制器从第二池分配另一个第一存储卷的第二数据存储区域。 通过第二存储控制器从第一池分配第二存储卷之一的第三数据存储区域。 通过第二存储控制器从第二池分配另一个第二存储卷的第四数据存储区域。

公开(公告)号：US20110252274A1

公开(公告)日：2011-10-13

申请号：US12756475

申请日：2010-04-08

申请人： Tomohiro KAWAGUCHI ,  Akira YAMAMOTO

发明人： Tomohiro KAWAGUCHI ,  Akira YAMAMOTO

IPC分类号： G06F11/16 ,  G06F12/00

CPC分类号： G06F11/1004 ,  G06F11/006 ,  G06F11/1076 ,  G06F11/2094 ,  G06F2211/1059

摘要： A system comprising a plurality of storage systems, which uses storage devices of multiple levels of reliability. The reliability as a whole system is increased by keeping the error code for the relatively low reliability storage disks in the relatively high reliability storage system. The error code is calculated using hash functions and the value is used to compare with the hash value of the data read from the relatively low reliability storage disks.

摘要翻译： 一种包括多个存储系统的系统，其使用多级可靠性的存储设备。 通过在相对较高的可靠性存储系统中保持相对较低的可靠性存储盘的错误代码来增加整个系统的可靠性。 使用散列函数计算错误代码，该值用于与从较低可靠性存储磁盘读取的数据的哈希值进行比较。

公开(公告)号：US20130297899A1

公开(公告)日：2013-11-07

申请号：US13461150

申请日：2012-05-01

申请人： Tomohiro KAWAGUCHI

发明人： Tomohiro KAWAGUCHI

IPC分类号： G06F12/16

CPC分类号： G06F3/0613 ,  G06F3/0641 ,  G06F3/0647 ,  G06F3/065 ,  G06F3/067 ,  G06F11/2069

摘要： Exemplary embodiments provide a technique to reduce the traffic between storage devices during data migration. In one embodiment, a system comprises a plurality of storage systems which are operable to migrate a set of primary and secondary volumes between the storage systems by managing and copying, between the storage systems, a plurality of same data and a plurality of difference data between the primary and secondary volumes and location information of each of the plurality of difference data, the location information identifying a location of the difference data in the primary or secondary volume associated with the difference data. Each secondary volume which corresponds to a primary volume, if said each source secondary volume contains data, has a same data as the primary volume and, if said each secondary volume is not synchronized with the primary volume, further has a difference data with respect to the primary volume.

摘要翻译： 示例性实施例提供了一种在数据迁移期间减少存储设备之间的流量的技术。 在一个实施例中，系统包括多个存储系统，其可操作以通过在存储系统之间管理和复制在存储系统之间迁移一组主卷和辅助卷之间的多个相同数据和多个相互不同的数据 所述多个差异数据中的每一个的主卷和次卷和位置信息，所述位置信息标识与所述差数据相关联的所述主卷或次卷中的所述差数据的位置。 对应于主卷的每个辅助卷（如果所述每个源辅助卷包含数据）具有与主卷相同的数据，并且如果所述每个辅助卷不与主卷同步，则还具有相对于 主卷。

公开(公告)号：US20120324162A1

公开(公告)日：2012-12-20

申请号：US13584870

申请日：2012-08-14

申请人： Takayuki FUKATANI ,  Yasutomo YAMAMOTO ,  Tomohiro KAWAGUCHI ,  Masanori TAKADA ,  Yoshiaki EGUCHI

发明人： Takayuki FUKATANI ,  Yasutomo YAMAMOTO ,  Tomohiro KAWAGUCHI ,  Masanori TAKADA ,  Yoshiaki EGUCHI

IPC分类号： G06F12/08

CPC分类号： G06F3/0659 ,  G06F3/0625 ,  G06F3/0689 ,  G06F12/0804 ,  G06F12/0871 ,  G06F2212/1028 ,  G06F2212/262 ,  G06F2212/283 ,  Y02D10/13 ,  Y02D10/154

摘要： For at least one of storage unit, processor and cache memory which are I/O process-participating devices related to I/O command process, when a load of one or more I/O process-participating devices or a part thereof is a low load equal to or less than a predetermined threshold value, a processing related to a state of one or more of the I/O process-participating devices or a part thereof is redirected to another one or more I/O process-participating devices or a part thereof, and the state of the one or more I/O process-participating devices or a part thereof is shifted to a power-saving state.

公开(公告)号：US20090240880A1

公开(公告)日：2009-09-24

申请号：US12053514

申请日：2008-03-21

申请人： Tomohiro KAWAGUCHI

发明人： Tomohiro KAWAGUCHI

IPC分类号： G06F12/00 ,  G06F9/46 ,  G06F17/30

CPC分类号： G06F3/0665 ,  G06F3/0617 ,  G06F3/067

摘要： A data storage system and method for simultaneously providing thin provisioning and high availability. The system includes external storage volume and two storage subsystems coupled together and to external storage volume. Each of storage subsystems includes disk drives and a cache area, each of the storage subsystems includes at least one virtual volume and at least one capacity pool. The virtual volume is allocated from storage elements of the at least one capacity pool. The capacity pool includes the disk drives and at least a portion of external storage volume. The storage elements of the capacity pool are allocated to the virtual volume in response to a data access request. The system further includes a host computer coupled to the storage subsystems and configured to switch input/output path between the storage subsystems. Each of the storage subsystems is adapted to copy received write I/O request to other storage subsystems. Upon receipt of request from another storage subsystem, storage element of the capacity pool of storage subsystem is prevented from being allocated to the virtual volume of that storage subsystem.

摘要翻译： 一种用于同时提供精简配置和高可用性的数据存储系统和方法。 该系统包括外部存储卷和两个耦合在一起的存储子系统和外部存储卷。 每个存储子系统包括磁盘驱动器和高速缓存区域，每个存储子系统包括至少一个虚拟卷和至少一个容量池。 虚拟卷从至少一个容量池的存储元件分配。 容量池包括磁盘驱动器和至少一部分外部存储卷。 响应于数据访问请求，容量池的存储元件被分配给虚拟卷。 该系统还包括耦合到存储子系统并被配置为在存储子系统之间切换输入/输出路径的主计算机。 每个存储子系统适于将接收到的写入I / O请求复制到其他存储子系统。 在接收到来自另一存储子系统的请求时，防止存储子系统的容量池的存储元件被分配给该存储子系统的虚拟卷。

公开(公告)号：US20090144496A1

公开(公告)日：2009-06-04

申请号：US11948948

申请日：2007-11-30

申请人： Tomohiro KAWAGUCHI

发明人： Tomohiro KAWAGUCHI

IPC分类号： G06F12/00 ,  G06F12/08

CPC分类号： G06F3/0608 ,  G06F3/0656 ,  G06F3/0665 ,  G06F3/0689 ,  G06F12/0866

摘要： A computerized data storage system includes at least one storage device including a nonvolatile writable medium; a cache memory operatively coupled to the storage port and including a data storing area and a data management controller and a storage port. The storage port is operable to connect to a host computer, receive and send I/O information required by the host computer. The storage port is also operable to receive a request to read data, and, in response to the request to read data, the storage port is operable to send the data stored in the data storing area of the cache memory. The storage port is further operable to receive a request to write data, and, in response to the request to write data, the storage port is operable to send the write data to the data storing area of the cache memory. The storage system further includes a thin provisioning controller operable to provide a virtual volume having a virtual volume page, a capacity pool having a capacity pool page and manage a mapping between the virtual volume page and the capacity pool page. The storage system further includes a data compression controller operable to perform a compression operation, and a data decompression controller operable to perform a decompression operation.

摘要翻译： 计算机化数据存储系统包括至少一个包括非易失性可写介质的存储设备; 可操作地耦合到存储端口并且包括数据存储区域和数据管理控制器和存储端口的高速缓存存储器。 存储端口可操作以连接到主计算机，接收和发送主计算机所需的I / O信息。 存储端口还可操作以接收读取数据的请求，并且响应于读取数据的请求，存储端口可操作以发送存储在高速缓冲存储器的数据存储区域中的数据。 存储端口还可操作用于接收写入数据的请求，并且响应于写入数据的请求，存储端口可操作地将写入数据发送到高速缓冲存储器的数据存储区域。 存储系统还包括精简配置控制器，其可操作以提供具有虚拟卷页面的虚拟卷，具有容量池页面的容量池，并且管理虚拟卷页面与容量池页面之间的映射。 存储系统还包括可操作以执行压缩操作的数据压缩控制器和可操作以执行解压缩操作的数据解压缩控制器。

公开(公告)号：US20130151806A1

公开(公告)日：2013-06-13

申请号：US13733610

申请日：2013-01-03

申请人： Tomohiro KAWAGUCHI

发明人： Tomohiro KAWAGUCHI

IPC分类号： G06F12/02

CPC分类号： G06F12/0223 ,  G06F3/0605 ,  G06F3/0631 ,  G06F3/0647 ,  G06F3/0685

摘要： A system comprises a first storage system including a first storage controller, which receives input/output commands from host computers and provides first storage volumes to the host computers; and a second storage system including a second storage controller which receives input/output commands from host computers and provides second storage volumes to the host computers. A first data storing region of one of the first storage volumes is allocated from a first pool by the first storage controller. A second data storing region of another one of the first storage volumes is allocated from a second pool by the first storage controller. A third data storing region of one of the second storage volumes is allocated from the first pool by the second storage controller. A fourth data storing region of another one of the second storage volumes is allocated from the second pool by the second storage controller.

摘要翻译： 系统包括第一存储系统，其包括第一存储控制器，其从主计算机接收输入/输出命令并向主机提供第一存储卷; 以及包括第二存储控制器的第二存储系统，所述第二存储控制器从主机计算机接收输入/输出命令，并向所述主计算机提供第二存储卷。 通过第一存储控制器从第一池分配第一存储卷之一的第一数据存储区域。 第一存储控制器从第二池分配另一个第一存储卷的第二数据存储区域。 通过第二存储控制器从第一池分配第二存储卷之一的第三数据存储区域。 通过第二存储控制器从第二池分配另一个第二存储卷的第四数据存储区域。