公开(公告)号：US07266654B2

公开(公告)日：2007-09-04

申请号：US10808921

申请日：2004-03-24

申请人： Takahiro Nakano ,  Junichi Hara ,  Tsuyoshi Aoyama ,  Koji Sonoda ,  Yoshiaki Eguchi ,  Takashi Horiuchi

发明人： Takahiro Nakano ,  Junichi Hara ,  Tsuyoshi Aoyama ,  Koji Sonoda ,  Yoshiaki Eguchi ,  Takashi Horiuchi

IPC分类号： G06F12/00

CPC分类号： G06F3/0611 ,  G06F3/0608 ,  G06F3/064 ,  G06F3/068 ,  G06F3/0689 ,  G06F11/1446 ,  G06F2201/84 ,  Y10S707/99953 ,  Y10S707/99954

摘要： In a storage system with a server apparatus having at least one CPU, a memory, at least one network interface, and at least one storage interface, and, at least one disk connected to the storage interface, the server apparatus has a snapshot management part which maintains and manages snapshot of the disk apparatus, the disk apparatus has an operational volume which performs ordinary read/write and a differential volume which stores differential data of snapshot of the operational volume, the snapshot management part stores data on the operational volume in the differential volume, provides a preceding copy area to store its location information, and when free area on the differential volume becomes insufficient discards the stored location information and uses the preceding copy area as an free area.

摘要翻译： 在具有至少一个CPU，存储器，至少一个网络接口和至少一个存储接口的服务器装置的存储系统中，以及连接到存储接口的至少一个盘，所述服务器装置具有快照管理部分 维护和管理磁盘装置的快照，磁盘装置具有执行普通读/写的操作量和存储操作卷的快照差异数据的差分卷，快照管理部存储关于操作卷的操作卷的数据 差分卷提供前一个复制区域来存储其位置信息，并且当差分卷上的空闲区域变得不足时，丢弃存储的位置信息，并将前一个复制区域用作空闲区域。

公开(公告)号：US20050027819A1

公开(公告)日：2005-02-03

申请号：US10808921

申请日：2004-03-24

申请人： Takahiro Nakano ,  Junichi Hara ,  Tsuyoshi Aoyama ,  Koji Sonoda ,  Yoshiaki Eguchi ,  Takashi Horiuchi

发明人： Takahiro Nakano ,  Junichi Hara ,  Tsuyoshi Aoyama ,  Koji Sonoda ,  Yoshiaki Eguchi ,  Takashi Horiuchi

IPC分类号： G06F15/16

CPC分类号： G06F3/0611 ,  G06F3/0608 ,  G06F3/064 ,  G06F3/068 ,  G06F3/0689 ,  G06F11/1446 ,  G06F2201/84 ,  Y10S707/99953 ,  Y10S707/99954

摘要： In a storage system with a server apparatus having at least one CPU, a memory, at least one network interface, and at least one storage interface, and, at least one disk connected to the storage interface, the server apparatus has a snapshot management part which maintains and manages snapshot of the disk apparatus, the disk apparatus has an operational volume which performs ordinary read/write and a differential volume which stores differential data of snapshot of the operational volume, the snapshot management part stores data on the operational volume in the differential volume, provides a preceding copy area to store its location information, and when free area on the differential volume becomes insufficient discards the stored location information and uses the preceding copy area as an free area.

摘要翻译： 在具有至少一个CPU，存储器，至少一个网络接口和至少一个存储接口的服务器装置的存储系统中，以及连接到存储接口的至少一个盘，所述服务器装置具有快照管理部分 维护和管理磁盘装置的快照，磁盘装置具有执行普通读/写的操作量和存储操作卷的快照差异数据的差分卷，快照管理部存储关于操作卷的操作卷的数据 差分卷提供前一个复制区域来存储其位置信息，并且当差分卷上的空闲区域变得不足时，丢弃存储的位置信息，并将前一个复制区域用作空闲区域。

公开(公告)号：US07657721B2

公开(公告)日：2010-02-02

申请号：US11809113

申请日：2007-05-30

申请人： Takahiro Nakano ,  Koji Sonoda ,  Yoshiaki Eguchi ,  Takashi Horiuchi ,  Katsumi Hirezaki

发明人： Takahiro Nakano ,  Koji Sonoda ,  Yoshiaki Eguchi ,  Takashi Horiuchi ,  Katsumi Hirezaki

IPC分类号： G06F12/00

CPC分类号： G06F17/30067 ,  G06F11/1448 ,  G06F11/1464 ,  G06F2201/84 ,  Y10S707/99953 ,  Y10S707/99954

摘要： Snapshots are implemented by combining original data in a place where an operational volume has been updated with data in a place where the operational volume has not been updated. A snapshot management table maintains a value indicating that update has not been conducted, or a storage place of original data, for each of combinations of blocks in the operational volume and the snapshots. If there is a snapshot in which update has not been conducted in a update place at the time of update, then original data is copied and the snapshot management table is updated. The copied original data is managed by a difference block management table, which has a value indicating whether respective snapshots are referencing the data. If a snapshot is deleted, then the value indicating that the snapshot is referencing is altered in all entries in the difference block management table.

摘要翻译： 快照是通过将操作卷更新的地方的原始数据与操作卷未更新的地方的数据相结合来实现的。 对于操作卷和快照中的每个块的组合，快照管理表维护指示尚未进行更新的值或原始数据的存储位置。 如果在更新时没有在更新位置进行更新的快照，则会复制原始数据，并更新快照管理表。 复制的原始数据由差分块管理表管理，差分块管理表具有指示各个快照是否参考数据的值。 如果快照被删除，则表示快照正在引用的值在差异块管理表的所有条目中被更改。

公开(公告)号：US20070233978A1

公开(公告)日：2007-10-04

申请号：US11809113

申请日：2007-05-30

申请人： Takahiro Nakano ,  Koji Sonoda ,  Yoshiaki Eguchi ,  Takashi Horiuchi ,  Katsumi Hirezaki

发明人： Takahiro Nakano ,  Koji Sonoda ,  Yoshiaki Eguchi ,  Takashi Horiuchi ,  Katsumi Hirezaki

IPC分类号： G06F12/00

CPC分类号： G06F17/30067 ,  G06F11/1448 ,  G06F11/1464 ,  G06F2201/84 ,  Y10S707/99953 ,  Y10S707/99954

摘要： Snapshots are implemented by combining original data in a place where an operational volume has been updated with data in a place where the operational volume has not been updated. A snapshot management table maintains a value indicating that update has not been conducted, or a storage place of original data, for each of combinations of blocks in the operational volume and the snapshots. If there is a snapshot in which update has not been conducted in a update place at the time of update, then original data is copied and the snapshot management table is updated. The copied original data is managed by a difference block management table, which has a value indicating whether respective snapshots are referencing the data. If a snapshot is deleted, then the value indicating that the snapshot is referencing is altered in all entries in the difference block management table.

摘要翻译： 快照是通过将操作卷更新的地方的原始数据与操作卷未更新的地方的数据相结合来实现的。 对于操作卷和快照中的每个块的组合，快照管理表维护指示尚未进行更新的值或原始数据的存储位置。 如果在更新时没有在更新位置进行更新的快照，则会复制原始数据，并更新快照管理表。 复制的原始数据由差分块管理表管理，差分块管理表具有指示各个快照是否参考数据的值。 如果快照被删除，则表示快照正在引用的值在差异块管理表的所有条目中被更改。

公开(公告)号：US07237076B2

公开(公告)日：2007-06-26

申请号：US10651633

申请日：2003-08-29

申请人： Takahiro Nakano ,  Koji Sonoda ,  Yoshiaki Eguchi ,  Takashi Horiuchi ,  Katsumi Hirezaki

发明人： Takahiro Nakano ,  Koji Sonoda ,  Yoshiaki Eguchi ,  Takashi Horiuchi ,  Katsumi Hirezaki

IPC分类号： G06F12/00

CPC分类号： G06F17/30067 ,  G06F11/1448 ,  G06F11/1464 ,  G06F2201/84 ,  Y10S707/99953 ,  Y10S707/99954

摘要： Snapshots are implemented by combining original data in a place where an operational volume has been updated with data in a place where the operational volume has not been updated. A snapshot management table maintains a value indicating that update has not been conducted, or a storage place of original data, for each of combinations of blocks in the operational volume and the snapshots. If there is a snapshot in which update has not been conducted in a update place at the time of update, then original data is copied and the snapshot management table is updated. The copied original data is managed by a difference block management table, which has a value indicating whether respective snapshots are referencing the data. If a snapshot is deleted, then the value indicating that the snapshot is referencing is altered in all entries in the difference block management table.

公开(公告)号：US07606990B2

公开(公告)日：2009-10-20

申请号：US12054846

申请日：2008-03-25

申请人： Ai Satoyama ,  Yoshiaki Eguchi ,  Takahiro Nakano

发明人： Ai Satoyama ,  Yoshiaki Eguchi ,  Takahiro Nakano

IPC分类号： G06F12/16

CPC分类号： G06F11/1435 ,  G06F11/1456 ,  G06F11/1458 ,  G06F11/1469 ,  G06F2201/84 ,  Y10S707/99953 ,  Y10S707/99955

摘要： A storage system including a snapshot volume arranged to provide each of a plurality of snapshot generations to the host as a virtual volume and to store data having an identical content in one storage area, and in that a management unit is arranged to: determine, when the host sends a request to create the original volume as a new volume of a designated generation, whether the designated generation is a generation of the copy volume or not; overwrite data in the copy volume for a block address of the designated generation indicating the snapshot volume if the generation of the copy volume is different from the designated generation; and change mapping information of the copy volume to the mapping information of the original volume.

摘要翻译： 一种存储系统，包括快照卷，其被布置为将多个快照世代中的每一个作为虚拟卷提供给所述主机，并且将具有相同内容的数据存储在一个存储区域中，并且管理单元被布置为： 主机发送创建原始卷的请求作为指定代的新卷，指定代是否是副本卷的生成; 如果复制卷的生成与指定的生成不同，则覆盖表示快照卷的指定生成的块地址的复制卷中的数据; 并将复制卷的映射信息更改为原始卷的映射信息。

公开(公告)号：US20080183995A1

公开(公告)日：2008-07-31

申请号：US12054846

申请日：2008-03-25

申请人： Ai SATOYAMA ,  Yoshiaki Eguchi ,  Takahiro Nakano

发明人： Ai SATOYAMA ,  Yoshiaki Eguchi ,  Takahiro Nakano

IPC分类号： G06F12/16

CPC分类号： G06F11/1435 ,  G06F11/1456 ,  G06F11/1458 ,  G06F11/1469 ,  G06F2201/84 ,  Y10S707/99953 ,  Y10S707/99955

摘要： A storage system including a snapshot volume arranged to provide each of a plurality of snapshot generations to the host as a virtual volume and to store data having an identical content in one storage area, and in that a management unit is arranged to: determine, when the host sends a request to create the original volume as a new volume of a designated generation, whether the designated generation is a generation of the copy volume or not; overwrite data in the copy volume for a block address of the designated generation indicating the snapshot volume if the generation of the copy volume is different from the designated generation; and change mapping information of the copy volume to the mapping information of the original volume.

摘要翻译： 一种存储系统，包括快照卷，其被布置为将多个快照世代中的每一个作为虚拟卷提供给所述主机，并且将具有相同内容的数据存储在一个存储区域中，并且管理单元被布置为： 主机发送创建原始卷的请求作为指定代的新卷，指定代是否是副本卷的生成; 如果复制卷的生成与指定的生成不同，则覆盖表示快照卷的指定生成的块地址的复制卷中的数据; 并将复制卷的映射信息更改为原始卷的映射信息。

公开(公告)号：US20060075200A1

公开(公告)日：2006-04-06

申请号：US10998755

申请日：2004-11-30

申请人： Ai Satoyama ,  Yoshiaki Eguchi ,  Takahiro Nakano

发明人： Ai Satoyama ,  Yoshiaki Eguchi ,  Takahiro Nakano

IPC分类号： G06F12/16

CPC分类号： G06F11/1435 ,  G06F11/1456 ,  G06F11/1458 ,  G06F11/1469 ,  G06F2201/84 ,  Y10S707/99953 ,  Y10S707/99955

摘要： To obtain a volume image of a given generation. A storage system of this invention includes a disk device in which an original volume is provided to read/write data from a host, a copy volume is provided to store a copy of the original volume of a predetermined timing, and a snapshot volume is provided to store snapshot data of a snapshot of the original volume; and a storage control unit which includes a management unit for controlling the storage control unit, a channel I/F connected to the host, and a device I/F connected to the disk device, in which the management unit copies data of the original volume to the copy volume at a predetermined timing, stores the snapshot data of the snapshot in the snapshot volume corresponding to a write request in the original volume, manages a generation of the created snapshot and a generation of the copy volume, and reads data from at least one of the snapshot volume and the copy volume when a read request from a volume of a generation different from that of the original volume is received from the host.

摘要翻译： 获得给定世代的体积图像。 本发明的存储系统包括其中提供原始卷以从主机读/写数据的盘装置，提供复制卷以存储预定定时的原始卷的副本，并且提供快照卷 存储原始卷的快照的快照数据; 以及存储控制单元，其包括用于控制存储控制单元的管理单元，连接到主机的通道I / F和连接到盘设备的设备I / F，其中管理单元复制原始卷的数据 在预定时间到副本卷，将快照的快照数据存储在与原始卷相对应的写入请求的快照卷中，管理创建的快照的生成和复制卷的生成，并从中读取数据 当从主机接收到来自不同于原始卷的生成卷的读取请求时，至少一个快照卷和副本卷。

公开(公告)号：US20110119459A1

公开(公告)日：2011-05-19

申请号：US13013183

申请日：2011-01-25

申请人： Ai SATOYAMA ,  Yoshiaki Eguchi ,  Takahiro Nakano

发明人： Ai SATOYAMA ,  Yoshiaki Eguchi ,  Takahiro Nakano

IPC分类号： G06F12/16

CPC分类号： G06F11/1435 ,  G06F11/1456 ,  G06F11/1458 ,  G06F11/1469 ,  G06F2201/84 ,  Y10S707/99953 ,  Y10S707/99955

摘要： A storage system including: a storage device which configures an original volume for storing data which is read/written by a host, a copy volume for storing a copy of the original volume at a predetermined timing, and a snapshot volume for storing a snapshot data which is a snapshot of the original volume; and a controller which controls access from the host to the storage device; wherein the controller: copies data of the original volume to the copy volume at a predetermined timing; stores the snapshot data in the snapshot volume corresponding to a write request to the original volume without decreasing a performance of the original volume; manages a generation of the stored snapshot according to predetermined copy volume blocks and snapshot volume blocks, and manages a generation of the copy volume; and reads data from the snapshot volume and/or the copy volume when a read request to a volume of a generation different from that of the original volume is received from the host, without decreasing a performance of the original volume.

摘要翻译： 一种存储系统，包括：存储装置，其配置用于存储由主机读取/写入的数据的原始卷，用于在预定定时存储原始卷的副本的副本卷和用于存储快照数据的快照卷 这是原始卷的快照; 以及控制器，其控制从主机到存储设备的访问; 其中所述控制器：在预定定时将原始卷的数据复制到复制卷; 将对应于写入请求的快照卷中的快照数据存储到原始卷，而不降低原始卷的性能; 根据预定的复制卷块和快照卷块管理存储的快照的生成，并管理拷贝卷的生成; 并且当从主机接收到与原始卷不同的卷的生成卷的读取请求时，从快照卷和/或副本卷读取数据，而不降低原始卷的性能。

公开(公告)号：US08103843B2

公开(公告)日：2012-01-24

申请号：US13013183

申请日：2011-01-25

申请人： Ai Satoyama ,  Yoshiaki Eguchi ,  Takahiro Nakano

发明人： Ai Satoyama ,  Yoshiaki Eguchi ,  Takahiro Nakano

IPC分类号： G06F12/16

CPC分类号： G06F11/1435 ,  G06F11/1456 ,  G06F11/1458 ,  G06F11/1469 ,  G06F2201/84 ,  Y10S707/99953 ,  Y10S707/99955

摘要： A storage system including: a storage device which configures an original volume for storing data which is read/written by a host, a copy volume for storing a copy of the original volume at a predetermined timing, and a snapshot volume for storing a snapshot data which is a snapshot of the original volume; and a controller which controls access from the host to the storage device; wherein the controller: copies data of the original volume to the copy volume at a predetermined timing; stores the snapshot data in the snapshot volume corresponding to a write request to the original volume without decreasing a performance of the original volume; manages a generation of the stored snapshot according to predetermined copy volume blocks and snapshot volume blocks, and manages a generation of the copy volume; and reads data from the snapshot volume and/or the copy volume when a read request to a volume of a generation different from that of the original volume is received from the host, without decreasing a performance of the original volume.

摘要翻译： 一种存储系统，包括：存储装置，其配置用于存储由主机读取/写入的数据的原始卷，用于在预定定时存储原始卷的副本的副本卷和用于存储快照数据的快照卷 这是原始卷的快照; 以及控制器，其控制从主机到存储设备的访问; 其中所述控制器：在预定定时将原始卷的数据复制到复制卷; 将对应于写入请求的快照卷中的快照数据存储到原始卷，而不降低原始卷的性能; 根据预定的复制卷块和快照卷块管理存储的快照的生成，并管理拷贝卷的生成; 并且当从主机接收到与原始卷不同的卷的生成卷的读取请求时，从快照卷和/或副本卷读取数据，而不降低原始卷的性能。