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    • 73. 发明授权
    • Storage system and snapshot management method
    • 存储系统和快照管理方法
    • US07644244B2
    • 2010-01-05
    • US11377781
    • 2006-03-17
    • Yukiko HommaKoji NagataShoji Kodama
    • Yukiko HommaKoji NagataShoji Kodama
    • G06F13/00
    • G06F11/2082G06F11/2074
    • A highly advantageous storage system and a snapshot management method. In the storage system, write target data sent from a host computer to a first storage controller is duplicated and stored in the first storage controller and also in a second storage controller; when the first storage controller receives a request from the host computer to create a snapshot in the second storage controller, it suspends transferring differential data to the second storage controller, creates a new first snapshot, and transfers differential data for the created first snapshot together with the untransferred differential data for a previous first snapshot for which transferring had been suspended, to the second storage controller.
    • 高效的存储系统和快照管理方法。 在存储系统中,将从主计算机发送到第一存储控制器的目标数据写入第一存储控制器并存储在第二存储控制器中; 当第一存储控制器从主计算机接收到在第二存储控制器中创建快照的请求时,它暂停将差分数据传送到第二存储控制器,创建新的第一快照,并将所创建的第一快照的差分数据连同 将已经暂停传送的先前第一快照的未传输差分数据提供给第二存储控制器。
    • 78. 发明申请
    • Storage subsystem and storage system
    • 存储子系统和存储系统
    • US20080133857A1
    • 2008-06-05
    • US11987459
    • 2007-11-30
    • Koji AraiKoji Nagata
    • Koji AraiKoji Nagata
    • G06F12/00
    • G06F11/2074G06F11/1456G06F2201/84
    • The first storage subsystem, when new data is written in a first memory device beyond a certain timing, writes pre-updated data prior to update by said new data into a pre-updated data memory region and, in addition, updates snapshot management information that expresses a snapshot of a data group within the first memory device to information that expresses the snapshot at the certain timing and, at a later timing than the certain timing, judges, on the basis of the snapshot management information, in which of either the pre-updated data memory region or the first memory device the data constituting the data group at a certain timing exists, acquires data from the one in which the data exists and writes it into the second memory device of the second storage subsystem, and generates the certain timing repeatedly.
    • 当第一存储子系统在第一存储设备中写入超过一定时间的新数据时,将所述新数据更新之前的预更新数据写入预更新的数据存储器区域,此外还更新快照管理信息, 将第一存储器装置内的数据组的快照表示为在特定定时表示快照的信息,并且在稍后的某个定时的时刻,基于快照管理信息判断哪一个是预先 更新的数据存储器区域或第一存储器件存在在某个定时存在的构成数据组的数据,从数据存在的数据中获取数据并将其写入第二存储子系统的第二存储器件,并产生一定的 定时反复。
    • 79. 发明授权
    • Disk array apparatus and control method for disk array apparatus
    • 磁盘阵列装置及磁盘阵列装置的控制方法
    • US07334084B2
    • 2008-02-19
    • US11516791
    • 2006-09-07
    • Koji Nagata
    • Koji Nagata
    • G06F12/00
    • G06F3/0665G06F3/0608G06F3/0644G06F3/067
    • Resources of a storage apparatus are utilized effectively by increasing and reducing a capacity of a differential LU used in a snapshot. In a disk array apparatus including a control processor which controls reading and writing of data with respect to a first logical volume which is generated using storage areas of a plural disk drives, performs control such that data in the past stored in the first logical volume is written in a second logical volume as differential data for each generation, and manages the differential data, the control processor manages a pool management table, in which a logical volume usable as the second logical volume is registered, and a pool addition object management table, in which a logical volume which can be added to the second logical volume is registered, and moves the logical volume from the pool addition object management table to the pool management table to thereby increase a capacity of the second logical volume.
    • 通过增加和减少快照中使用的差分LU的容量来有效地利用存储装置的资源。 在包括控制数据相对于使用多个磁盘驱动器的存储区域生成的第一逻辑卷的数据读取和写入的磁盘阵列装置中,执行控制,使得存储在第一逻辑卷中的过去的数据为 写入第二逻辑卷作为每一代的差分数据,并且管理差分数据,控制处理器管理池管理表,其中可以用作第二逻辑卷的逻辑卷被注册,池附加对象管理表, 其中登记可以添加到第二逻辑卷的逻辑卷,并将逻辑卷从池附加对象管理表移动到池管理表,从而增加第二逻辑卷的容量。