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公开(公告)号：US20070113034A1
公开(公告)日：2007-05-17
申请号：US11649214
申请日：2007-01-04
CPC分类号： G06F11/2071 , G06F11/2038 , G06F11/2058 , G06F11/2064 , G06F11/2069 , G06F11/2082 , G06F2201/84
摘要： In the conventional storage system, consistency is ensured only for writing from a single storage. Asynchronous remote copying and local replication are also alternately suspended in the conventional system, so that the suspension time increases and the volume in which consistency is obtained becomes old. Two local replicas are prepared, for a volume containing stored data that is transferred from the main site by asynchronous remote copying, in the storage at the sub-site. Each pair of local replicas is alternately suspended by a time-specific suspension command according to the time of the timestamp attached to the write data, and replica data in which the time sequence is secured is continually prepared. When a failure occurs at the main site, the data is recovered using the replica data.
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公开(公告)号：US20060031646A1
公开(公告)日：2006-02-09
申请号：US10950577
申请日：2004-09-28
IPC分类号： G06F12/16
CPC分类号： G06F11/2071 , G06F11/2038 , G06F11/2058 , G06F11/2064 , G06F11/2069 , G06F11/2082 , G06F2201/84
摘要： In the conventional storage system, consistency is ensured only for writing from a single storage. Asynchronous remote copying and local replication are also alternately suspended in the conventional system, so that the suspension time increases and the volume in which consistency is obtained becomes old. Two local replicas are prepared, for a volume containing stored data that is transferred from the main site by asynchronous remote copying, in the storage at the sub-site. Each pair of local replicas is alternately suspended by a time-specific suspension command according to the time of the timestamp attached to the write data, and replica data in which the time sequence is secured is continually prepared. When a failure occurs at the main site, the data is recovered using the replica data.
摘要翻译： 在传统的存储系统中，只能从单个存储器写入一致性。 异常远程复制和本地复制也在传统系统中交替挂起，使得暂停时间增加，并且获得一致性的容量变得较旧。 对于包含从主站点通过异步远程复制传输的存储数据的卷，在子站点的存储中准备了两个本地副本。 根据附加到写入数据的时间戳的时间，通过时间特定的暂停命令交替地暂停每对本地副本，并且连续地准备其中确保时间序列的副本数据。 当主站发生故障时，使用副本数据恢复数据。
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公开(公告)号：US07200725B2
公开(公告)日：2007-04-03
申请号：US10950577
申请日：2004-09-28
IPC分类号： G06F12/00
CPC分类号： G06F11/2071 , G06F11/2038 , G06F11/2058 , G06F11/2064 , G06F11/2069 , G06F11/2082 , G06F2201/84
摘要： In the conventional storage system, consistency is ensured only for writing from a single storage. Asynchronous remote copying and local replication are also alternately suspended in the conventional system, so that the suspension time increases and the volume in which consistency is obtained becomes old. Two local replicas are prepared, for a volume containing stored data that is transferred from the main site by asynchronous remote copying, in the storage at the sub-site. Each pair of local replicas is alternately suspended by a time-specific suspension command according to the time of the timestamp attached to the write data, and replica data in which the time sequence is secured is continually prepared. When a failure occurs at the main site, the data is recovered using the replica data.
摘要翻译： 在传统的存储系统中，只能从单个存储器写入一致性。 异常远程复制和本地复制也在传统系统中交替挂起，使得暂停时间增加，并且获得一致性的容量变得较旧。 对于包含从主站点通过异步远程复制传输的存储数据的卷，在子站点的存储中准备了两个本地副本。 根据附加到写入数据的时间戳的时间，通过时间特定的暂停命令交替地暂停每对本地副本，并且连续地准备其中确保时间序列的副本数据。 当主站发生故障时，使用副本数据恢复数据。
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公开(公告)号：US20080140966A1
公开(公告)日：2008-06-12
申请号：US12000820
申请日：2007-12-18
IPC分类号： G06F12/16
CPC分类号： G06F11/2069 , G06F11/2074
摘要： During an asynchronous remote copy process for a plurality of asynchronous remote copy pairs, a copy of data in a migration source primary storage area is stored in a migration destination primary storage area, and the copy of data in the migration source primary storage area is also stored in a migration destination secondary storage area through a migration destination primary storage area or a migration source secondary storage area. Then, for an asynchronous remote copy pair established between the migration destination primary storage area and the migration destination secondary storage area together with the above-described asynchronous remote copy pairs, the asynchronous remote copy process is executed in such a method that a copy of writing data is stored in a plurality of secondary storage areas in accordance with the write request sequence issued by a computer. As such, an asynchronous remote copy pair between any two specific storage systems is migrated to be an asynchronous remote copy pair among any other two storage systems.
摘要翻译： 在用于多个异步远程复制对的异步远程复制过程期间，迁移源主存储区域中的数据副本被存储在迁移目的地主存储区域中，并且迁移源主存储区域中的数据副本也是 通过迁移目的地主存储区域或迁移源辅助存储区域存储在迁移目的地辅助存储区域中。 然后，对于在迁移目的地主存储区域和迁移目的地辅助存储区域之间建立的异步远程复制对以及上述异步远程复制对，异步远程复制处理以这样的方式执行，即，写入副本 根据由计算机发出的写入请求序列，将数据存储在多个辅助存储区域中。 因此，任何两个特定存储系统之间的异步远程副本对被迁移到任何其他两个存储系统之间的异步远程副本对。
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公开(公告)号：US20060085609A1
公开(公告)日：2006-04-20
申请号：US11015194
申请日：2004-12-17
IPC分类号： G06F12/16
CPC分类号： G06F11/2071 , G06F11/2058 , G06F11/2066 , G06F11/2069 , G06F11/2074 , G06F11/2082
摘要： To provide a computer system constituting a multitarget array and utilizing a remote copy technique for backing up data, in which when a failure occurs in a primary site, a new pair is formed between remaining two secondary sites without copying all data. A first secondary site is associated with the primary site by synchronous remote copy. A second secondary site is associated with the primary site by asynchronous remote copy. A storage system of the first secondary site includes a difference bitmap indicating an area to which data has been written from a host computer. When a failure occurs in a host computer of the primary site, only data of an area indicated by the difference bitmap is transferred to a storage system of the second secondary site.
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公开(公告)号：US08131963B2
公开(公告)日：2012-03-06
申请号：US12957457
申请日：2010-12-01
IPC分类号： G06F12/00
CPC分类号： G06F11/2071 , G06F11/2064
摘要： Even when a host does not give a write time to write data, consistency can be kept among data stored in secondary storage systems. The present system has plural primary storage systems each having a source volume and plural secondary storage systems each having a target volume. Once data is received from a host, each of the plural storage systems creates write-data management information having sequential numbers and reference information and sends, to one of the primary storage systems, the data, sequential number and reference information. Each of the secondary storage systems records reference information corresponding to the largest sequential number among serial sequential numbers and stores, in a target volume in an order of sequential numbers, data corresponding to reference information having a value smaller than the reference information based on the smallest value reference information among reference information recorded in each of the plural secondary storage systems.
摘要翻译： 即使主机没有写入时间来写入数据，也可以在存储在二级存储系统中的数据之间保持一致性。 本系统具有各自具有源卷的多个主存储系统和各自具有目标卷的多个辅助存储系统。 一旦从主机接收到数据，多个存储系统中的每一个创建具有连续号码和参考信息的写入数据管理信息，并向主存储系统之一发送数据，序列号和参考信息。 每个辅助存储系统记录与串行序列号中的最大顺序号相对应的参考信息，并且在目标卷中以顺序号顺序存储对应于具有小于基于最小值的参考信息的参考信息的参考信息的数据 在多个辅助存储系统的每一个中记录的参考信息中的值参考信息。
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公开(公告)号：US07330948B2
公开(公告)日：2008-02-12
申请号：US11143780
申请日：2005-06-03
IPC分类号： G06F12/16
CPC分类号： G06F11/2069 , G06F11/2074
摘要： During an asynchronous remote copy process for a plurality of asynchronous remote copy pairs, a copy of data in a migration source primary storage area is stored in a migration destination primary storage area, and the copy of data in the migration source primary storage area is also stored in a migration destination secondary storage area through a migration destination primary storage area or a migration source secondary storage area. Then, for an asynchronous remote copy pair established between the migration destination primary storage area and the migration destination secondary storage area together with the above-described asynchronous remote copy pairs, the asynchronous remote copy process is executed in such a method that a copy of writing data is stored in a plurality of secondary storage areas in accordance with the write request sequence issued by a computer. As such, an asynchronous remote copy pair between any two specific storage systems is migrated to be an asynchronous remote copy pair among any other two storage systems.
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公开(公告)号：US20050213389A1
公开(公告)日：2005-09-29
申请号：US11118927
申请日：2005-05-02
IPC分类号： G11C16/06
CPC分类号： G06F11/2064 , G06F11/2071 , Y10S707/99955
摘要： A remote copy system includes a plurality of first storage systems and a plurality of second storage systems. Each first storage system assigns a sequential number to write data received from the host and sends the write data with the sequential number to the second storage system. One of the first storage systems defers the processing of the write request received from the host and instructs each of the first storage systems to create a marker, whereupon each of the first storage systems defers the processing of the write request, creates a marker including a sequential number and having a marker number, and sends the marker to the second storage system. Each of the second storage systems, when receiving a marker from the first storage system, stores the marker number included in the marker. One of the second storage systems reads the marker number stored by each of the second storage systems and reports to each of the second storage systems the marker number of smallest value of the marker numbers which were thus read. Each of the second storage systems writes to a logical volume in sequential number order write data, of the write data received from the first storage system, that includes a sequential number of a value smaller than the sequential number of the marker including the marker number reported from one of the second storage systems.
摘要翻译： 远程复制系统包括多个第一存储系统和多个第二存储系统。 每个第一存储系统分配顺序号码以写入从主机接收的数据，并将具有序列号的写入数据发送到第二存储系统。 第一存储系统之一延迟处理从主机接收到的写入请求，并且指示每个第一存储系统创建标记，于是每个第一存储系统延迟写入请求的处理，创建一个标记，其包括 顺序号并具有标记号，并将标记发送到第二存储系统。 当从第一存储系统接收到标记时，第二存储系统中的每一个存储包括在标记中的标记号。 第二存储系统中的一个读取由每个第二存储系统存储的标记号，并向每个第二存储系统报告由此读取的标记号的最小值的标记号。 第二存储系统中的每一个以连续的数量顺序写入从第一存储系统接收的写入数据的数据写入逻辑卷，该数据包括小于包括所报告的标记数的标记序列号的值的序列号 来自第二个存储系统之一。
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公开(公告)号：US08397041B2
公开(公告)日：2013-03-12
申请号：US13360975
申请日：2012-01-30
IPC分类号： G06F12/00
CPC分类号： G06F11/2071 , G06F11/2064
摘要： Even when a host does not give a write time to write data, consistency can be kept among data stored in secondary storage systems. The present system has plural primary storage systems each having a source volume and plural secondary storage systems each having a target volume. Once data is received from a host, each of the plural storage systems creates write-data management information having sequential numbers and reference information and sends, to one of the primary storage systems, the data, sequential number and reference information. Each of the secondary storage systems records reference information corresponding to the larges sequential number among serial sequential numbers and stores, in a target volume in an order of sequential numbers, data corresponding to reference information having a value smaller than the reference information based on the smallest value reference information among reference information recorded in each of the plural secondary storage systems.
摘要翻译： 即使主机没有写入时间来写入数据，也可以在存储在二级存储系统中的数据之间保持一致性。 本系统具有各自具有源卷的多个主存储系统和各自具有目标卷的多个辅助存储系统。 一旦从主机接收到数据，多个存储系统中的每一个创建具有连续号码和参考信息的写入数据管理信息，并且向主存储系统之一发送数据，序列号和参考信息。 每个辅助存储系统记录与串行序列号中的较大序列号相对应的参考信息，并且在目标卷中以顺序号顺序存储对应于具有小于基于最小值的参考信息的参考信息的参考信息的数据 在多个辅助存储系统的每一个中记录的参考信息中的值参考信息。
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公开(公告)号：US07934065B2
公开(公告)日：2011-04-26
申请号：US12826486
申请日：2010-06-29
IPC分类号： G06F12/00
CPC分类号： G06F11/2079 , G06F11/1662 , G06F11/2058 , G06F11/2069 , G06F11/2074 , G06F2201/855 , Y10S707/99953 , Y10S707/99955
摘要： During the normal operation state of a computer system 1000, the data stored in a primary storage system 200P is copied to an intermediate storage system 200I via synchronous copying and the data stored in the intermediate storage system 200I is copied to a secondary storage system 200R via asynchronous copying. During the reverse operation state, however, the data stored in the secondary storage system 200R is copied to the intermediate storage system 200I via asynchronous copying and the data stored in the intermediate storage system 200I is copied to the primary storage system 200P via synchronous copying. In this way, practical remote copying can be carried out in a computer system in which three or more storage devices are installed at different locations and connected serially.
摘要翻译： 在计算机系统1000的正常操作状态期间，通过同步复制将存储在主存储系统200P中的数据复制到中间存储系统200I，并且存储在中间存储系统200I中的数据被复制到辅助存储系统200R，经由 异步复制。 然而，在反向运行状态下，存储在二次存储系统200R中的数据通过异步复制复制到中间存储系统200I，并且通过同步复制将存储在中间存储系统200I中的数据复制到主存储系统200P。 以这种方式，可以在其中三个或更多个存储设备安装在不同位置并且连续连接的计算机系统中进行实际的远程复制。
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