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41. 发明授权

US07644228B2 Distributed storage system with global replication 有权
标题翻译：具有全局复制功能的分布式存储系统
公开(公告)号：US07644228B2
公开(公告)日：2010-01-05
申请号：US11479432
申请日：2006-06-30
申请人： Stephen J. Sicola
发明人： Stephen J. Sicola
IPC分类号： G06F12/00
CPC分类号： G06F11/2094 , G06F3/0605 , G06F3/0647 , G06F3/0665 , G06F3/067 , G06F3/0689 , G06F11/2089 , H04L67/1097
摘要： A data storage system apparatus and associated method with a virtualization engine connectable to a remote device over a network for passing access commands between the remote device and a storage space. A plurality of intelligent storage elements (ISEs) are configured for replicating data from a first ISE to a second ISE independently of access commands being simultaneously passed between the virtualization engine and the first ISE.
摘要翻译：一种数据存储系统装置和相关联的方法，其具有通过网络连接到远程设备的虚拟化引擎，用于在远程设备和存储空间之间传递访问命令。配置多个智能存储元件（ISE），用于将数据从第一ISE复制到第二ISE，独立于在虚拟化引擎和第一ISE之间同时传递的访问命令。

42. 发明授权

US07542986B2 System and method for maintaining order for a replicated multi-unit I/O stream 有权
标题翻译：维护复制多单元I / O流的顺序的系统和方法
公开(公告)号：US07542986B2
公开(公告)日：2009-06-02
申请号：US10106905
申请日：2002-03-26
申请人： Clark Lubbers , Susan Elkington , Randy Hess , Stephen J. Sicola , James McCarty , Anuja Korgaonkar , Jason Leveille
发明人： Clark Lubbers , Susan Elkington , Randy Hess , Stephen J. Sicola , James McCarty , Anuja Korgaonkar , Jason Leveille
IPC分类号： G06F17/00
CPC分类号： G06F11/2064 , G06F3/0601 , G06F11/1666 , G06F11/20 , G06F11/2058 , G06F11/2076 , G06F11/2079 , G06F2003/0697 , H04L67/1097 , H04L69/329 , Y10S707/99942 , Y10S707/99943 , Y10S707/99944
摘要： A system in which data operations for a data replication group are received in-order, and buffered. When the operations are complete, they are stored in a non-volatile memory atomically with a group sequence number. The cache is preferably mirrored. This creates a persistent association between the data operation and the sequence number. After the atomic store is performed in at least one non-volatile cache, the data operation is propagated to another member of the data replication group along with the group sequence number. In the other member, the data operation is cached at least once in a non-volatile cache atomically with the group sequence number. In this manner, the set of group sequence numbers for a plurality of operations forms a continuous ordering of the data operations.
摘要翻译：数据复制组的数据操作按顺序接收和缓冲的系统。当操作完成时，它们以组序列号原子地存储在非易失性存储器中。缓存优选地被镜像。这将创建数据操作和序列号之间的持久关联。在至少一个非易失性缓存中执行原子存储之后，将数据操作与组序列号一起传播到数据复制组的另一个成员。在其他成员中，数据操作至少一次在非易失性缓存中以组序列号原子地缓存。以这种方式，用于多个操作的组序号的集合形成数据操作的连续排序。

43. 发明申请

US20080281830A1 DISTRIBUTED STORAGE SYSTEM WITH GLOBAL REPLICATION 有权
标题翻译：分布式存储系统全球化
公开(公告)号：US20080281830A1
公开(公告)日：2008-11-13
申请号：US12167152
申请日：2008-07-02
申请人： Stephen J. Sicola
发明人： Stephen J. Sicola
IPC分类号： G06F17/30
CPC分类号： G06F11/2094 , G06F3/0605 , G06F3/0647 , G06F3/0665 , G06F3/067 , G06F3/0689 , G06F11/2089 , H04L67/1097
摘要： A data storage system apparatus and associated method with a virtualization engine connectable to a remote device over a network for passing access commands between the remote device and a storage space. A plurality of intelligent storage elements (ISEs) are configured for replicating data from a first ISE to a second ISE independently of access commands being simultaneously passed between the virtualization engine and the first ISE.
摘要翻译：一种数据存储系统装置和相关联的方法，其具有通过网络连接到远程设备的虚拟化引擎，用于在远程设备和存储空间之间传递访问命令。配置多个智能存储元件（ISE），用于将数据从第一ISE复制到第二ISE，独立于在虚拟化引擎和第一ISE之间同时传递的访问命令。

44. 发明授权

US07137032B2 System and method for ensuring merge completion in a storage area network 失效
公开(公告)号：US07137032B2
公开(公告)日：2006-11-14
申请号：US11167688
申请日：2005-06-27
申请人： Clark Lubbers , Susan Elkington , Randy Hess , Stephen J. Sicola , James McCarty , Anuja Korgaonkar , Jason Leveille
发明人： Clark Lubbers , Susan Elkington , Randy Hess , Stephen J. Sicola , James McCarty , Anuja Korgaonkar , Jason Leveille
IPC分类号： G06F11/00 , G06F11/16
CPC分类号： G06F11/2082 , G06F11/2005 , G06F11/2007 , G06F11/2033 , G06F11/2064 , G06F11/2079 , G06F11/2089 , H04L67/1097 , H04L69/329
摘要： Methods and systems for managing disk capacity allocated to a data log in a source data storage system during a merge process are disclosed. Data in the data log may be merged into corresponding data on a destination storage system connected to the source data storage system by at least one communication link. In one embodiment a method comprises maintaining a ratio of merge writes out of the data log to writes from a host computer into the data log within a desired range until the write process reaches a predetermined distance from the end of the data log, and quiescing writes from a host computer into the data log until the data log is fully written to the destination storage system.

45. 发明授权

US07007042B2 System and method for automatic site failover in a storage area network 失效
公开(公告)号：US07007042B2
公开(公告)日：2006-02-28
申请号：US10112085
申请日：2002-03-28
申请人： Clark Lubbers , Susan Elkington , Randy Hess , Stephen J. Sicola , James McCarty , Anuja Korgaonkar
发明人： Clark Lubbers , Susan Elkington , Randy Hess , Stephen J. Sicola , James McCarty , Anuja Korgaonkar
IPC分类号： G06F12/00
CPC分类号： G06F11/2079 , G06F11/2058 , G06F11/2064 , G06F11/2069 , G06F11/2071 , G06F11/2082 , G06F2201/855 , Y10S707/99933 , Y10S707/99942 , Y10S707/99943 , Y10S707/99944 , Y10S707/99953
摘要： A data storage system adapted to maintain redundant data storage sets at a destination location(s) is disclosed. The data storage system establishes a copy set comprising a source volume and a destination volume. Data written to a source volume is automatically copied to the destination volume. The data storage system maintains a data log that may be activated when the destination volume is inaccessible due to, for example, a malfunction in the destination storage system or in the communication link between the source system and the destination system. I/O commands and the data associated with those commands are written to the data log, and after a destination system becomes available the information in the data log is merged into the destination volume to conform the data in the destination volume to the data in the source volume. The data log competes for disk capacity with other volumes on the system, and log memory is allocated as needed. In operation, the array controllers monitor connection status between array controllers in a DRM group. When a connection failure is detected the controllers determine which of the remaining controllers determine whether the source controller remains online, and if not then which destination controller should assume the role of the source controller.

46. 发明授权

US06928513B2 System and method for managing data logging memory in a storage area network 有权
标题翻译：用于管理存储区域网络中的数据记录存储器的系统和方法
公开(公告)号：US06928513B2
公开(公告)日：2005-08-09
申请号：US10106814
申请日：2002-03-26
申请人： Clark Lubbers , Susan Elkington , Randy Hess , Stephen J. Sicola , James McCarty , Anuja Korgaonkar , Jason Leveille
发明人： Clark Lubbers , Susan Elkington , Randy Hess , Stephen J. Sicola , James McCarty , Anuja Korgaonkar , Jason Leveille
IPC分类号： G06F12/16 , H04B1/74
CPC分类号： G06F11/2064 , G06F11/2074 , G06F11/2082 , G06F17/30315
摘要： A data storage system adapted to maintain redundant data storage sets at a destination location(s) is disclosed. The data storage system establishes a copy set comprising a source volume and a destination volume. Data written to a source volume is automatically copied to the destination volume. The data storage system maintains a data log that may be activated when the destination volume is inaccessible due to, for example, a malfunction in the destination storage system or in the communication link between the source system and the destination system. I/O commands and the data associated with those commands are written to the data log, and after a destination system becomes available the information in the data log is merged into the destination volume to conform the data in the destination volume to the data in the source volume. The data log competes for disk capacity with other volumes on the system, and log memory is allocated as needed. Command entries and data entries are stored in distinct areas of the data log, and the command entries include information identifying the memory offset of the associated data entries.
摘要翻译：公开了一种适于在目的地位置维护冗余数据存储组的数据存储系统。数据存储系统建立包括源卷和目的地卷的复制集。写入源卷的数据将自动复制到目标卷。数据存储系统维护数据记录，当由于例如目的地存储系统中的故障或源系统与目的地系统之间的通信链路而导致目的地卷不可访问时，可能会被激活。 I / O命令和与这些命令相关联的数据被写入数据日志，并且在目标系统变得可用之后，将数据日志中的信息合并到目标卷中，以使目的卷中的数据符合目标卷中的数据源音量。数据日志与系统上的其他卷竞争磁盘容量，并根据需要分配日志内存。命令条目和数据条目存储在数据日志的不同区域中，命令条目包括标识关联数据条目的存储器偏移量的信息。

47. 发明授权

US06618794B1 System for generating a point-in-time copy of data in a data storage system 有权
标题翻译：用于在数据存储系统中生成数据的时间点副本的系统
公开(公告)号：US06618794B1
公开(公告)日：2003-09-09
申请号：US09702575
申请日：2000-10-31
申请人： Stephen J. Sicola , James Pherson , Jesse Yandell
发明人： Stephen J. Sicola , James Pherson , Jesse Yandell
IPC分类号： G06F1100
CPC分类号： G06F11/1466 , G06F2201/84 , Y10S707/99952 , Y10S707/99953
摘要： A system for generating a virtual point-in-time copy of a selected subset (e.g., a selected volume or logical unit) of a storage system. The present system operates by using a bitmap in storage system controller cache memory to indicate blocks of memory in the selected volume that have been overwritten since the snapshot was initiated. When a write to the selected volume is requested, the cache bitmap is checked to determine whether the original data (in the area to be overwritten) has already been copied from the selected volume to a temporary volume. If the original data was previously copied, then the write proceeds to the selected volume. If, however, the original data would be overwritten by the presently requested write operation, then an area containing the original data is copied from the selected volume to a temporary volume. Reads from the temporary volume first check the bitmap to determine if the requested data has already been copied from the selected volume to the temporary volume. If so, the data is read from the temporary volume, otherwise, the data is read from the selected volume.
摘要翻译：一种用于生成存储系统的所选子集（例如，选定的卷或逻辑单元）的虚拟时间点副本的系统。本系统通过使用存储系统控制器高速缓冲存储器中的位图来指示所选择的卷中自从快照启动以来被覆盖的内存块。当请求对所选择的卷的写入时，检查缓存位图以确定原始数据（要覆盖的区域）是否已经从所选择的卷复制到临时卷。如果原始数据先前被复制，则写入进入所选择的卷。然而，如果原始数据将被当前请求的写入操作覆盖，则将包含原始数据的区域从所选择的卷复制到临时卷。从临时卷读取首先检查位图以确定所请求的数据是否已经从所选卷复制到临时卷。如果是这样，则从临时卷中读取数据，否则从所选卷读取数据。

48. 发明授权

US5933592A Promoting device level error to raidset level error to restore redundacy in a raid array data storage system 失效
标题翻译：将设备级别的错误提升到raidset级错误，以恢复RAID阵列数据存储系统中的冗余
公开(公告)号：US5933592A
公开(公告)日：1999-08-03
申请号：US542933
申请日：1995-10-13
申请人： Clark E. Lubbers , Stephen J. Sicola , Ronald H. McLean , James Perry Jackson , Robert A. Ellis
发明人： Clark E. Lubbers , Stephen J. Sicola , Ronald H. McLean , James Perry Jackson , Robert A. Ellis
IPC分类号： G06F11/10 , G11B20/18 , G06F11/00 , G06F12/12
CPC分类号： G06F11/1076 , G11B20/1833
摘要： A RAID array includes redundant storage devices. Data is distributed across the storage devices, and organized as slivers of RAID protected data blocks. This redundancy provides for the reconstruction of valid data when data at a particular data block of a sliver is found to be inconsistent. However, when more than one data block of a sliver is found to have inconsistent data, reconstruction of the inconsistent data blocks may not be possible. Nonetheless, data consistency can still be restored to that sliver. Consistency is restored to such a sliver by replacing any inconsistent data in a data block with predetermined data and reconstructing the parity data block using the predetermined data. Other data in the RAID array keeps track of those data blocks with the predetermined data to indicate that such blocks do not contain valid data.
摘要翻译： RAID阵列包括冗余存储设备。数据分布在存储设备上，并且被组织为RAID保护数据块的条带。当发现条子的特定数据块上的数据被发现不一致时，该冗余提供了有效数据的重建。然而，当发现条子的多于一个数据块具有不一致的数据时，不一致数据块的重构可能是不可能的。尽管如此，仍然可以恢复数据一致性。通过使用预定数据替换数据块中的任何不一致的数据并使用预定数据重建奇偶校验数据块，将一致性恢复到这样的条子。 RAID阵列中的其他数据使用预定数据跟踪那些数据块，以指示这些块不包含有效数据。

49. 发明授权

US5826001A Reconstructing data blocks in a raid array data storage system having storage device metadata and raid set metadata 失效
标题翻译：在具有存储设备元数据和集群元数据的RAID阵列数据存储系统中重建数据块
公开(公告)号：US5826001A
公开(公告)日：1998-10-20
申请号：US542670
申请日：1995-10-13
申请人： Clark E. Lubbers , Stephen J. Sicola , Ronald H. McLean , James Perry Jackson , Robert A. Ellis
发明人： Clark E. Lubbers , Stephen J. Sicola , Ronald H. McLean , James Perry Jackson , Robert A. Ellis
IPC分类号： G06F11/10 , G11B20/18 , G06F11/00 , G06F11/20
CPC分类号： G06F11/1076 , G11B20/1833
摘要： A data block in a RAID array is reconstructed under the control of metadata recorded on the RAID array. The RAID array has a plurality of members, each member being a data storage device. The metadata includes device metadata for data blocks recorded on each member and RAIDset metadata for RAID protected data blocks recorded across the members of the RAID array. The RAID protected data blocks include user data blocks, RAIDset metadata blocks and parity data blocks. The data blocks are reconstructed by detecting from a device FE bit in the device metadata that a bad data block corresponding to or associated with the device FE bit needs to be reconstructed. The data is read from each data block, other than the bad data block, in the same RAID sliver with bad data block. A RAID sliver of data blocks includes all the data blocks in a RAID protected sliver of data blocks. From the data read from the other data blocks in the RAID sliver with the bad data block, the bad data block is regenerated to produce a new data block. The new data block is written in the RAID array as the reconstructed block in place of the bad data block. The device FE bit for the reconstructed data block is cleared to indicate the reconstructed data block is consistent with the other data blocks in the RAID protected sliver containing the reconstructed data block.
摘要翻译：在RAID阵列中记录的元数据的控制下重构RAID阵列中的数据块。 RAID阵列具有多个成员，每个成员是数据存储设备。元数据包括记录在每个成员上的数据块的设备元数据，以及记录在RAID阵列成员上的RAID保护数据块的RAIDset元数据。 RAID保护的数据块包括用户数据块，RAID组元数据块和奇偶校验数据块。通过从设备元数据中的设备FE位检测来重构数据块，需要对与设备FE位相对应或关联的不良数据块进行重构。在数据块不良的同一RAID条中，从除数据块以外的数据块中读取数据。数据块的RAID条包括数据块的RAID保护条中的所有数据块。从具有不良数据块的RAID条中从其他数据块读取的数据，重新生成坏数据块以产生新的数据块。将新数据块作为重构块写入RAID阵列，代替不良数据块。清除重建数据块的设备FE位，以指示重建的数据块与包含重构数据块的RAID保护条中的其他数据块一致。

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