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11. 发明授权

US08478945B2 Dynamic management of destage tasks in a storage controller 有权
标题翻译：动态管理存储控制器中的目标任务
公开(公告)号：US08478945B2
公开(公告)日：2013-07-02
申请号：US12697385
申请日：2010-02-01
申请人： Kevin John Ash , Lokesh Mohan Gupta
发明人： Kevin John Ash , Lokesh Mohan Gupta
IPC分类号： G06F12/00
CPC分类号： G06F12/0868 , G06F12/0804 , G06F2212/261 , G06F2212/502
摘要： Method, system, and computer program product embodiments for facilitating data transfer from a write cache and NVS via a device adapter to a pool of storage devices by a processor or processors are provided. The processor(s) adaptively varies the destage rate based on the current occupancy of the NVS for a particular storage device and stage activity related to that storage device. The stage activity includes one or more of the storage device stage activity, device adapter stage activity, device adapter utilized bandwidth and the read/write speed of the storage device. These factors are generally associated with read response time in the event of a cache miss and not ordinarily associated with dynamic management of the destage rate. This combination maintains the desired overall occupancy of the NVS while improving response time performance.
摘要翻译：提供了方法，系统和计算机程序产品实施例，用于促进通过处理器或处理器从写入高速缓存和NVS经由设备适配器到存储设备池的数据传输。处理器根据特定存储设备的NVS的当前占用率和与该存储设备相关的阶段活动自适应地改变流水率。舞台活动包括存储设备舞台活动，设备适配器舞台活动，设备适配器利用带宽和存储设备的读/写速度中的一个或多个。这些因素通常与高速缓存未命中的读取响应时间相关联，并且通常不与流动速率的动态管理相关联。这种组合在提高响应时间性能的同时保持NVS的期望总体占用。

12. 发明授权

US07761680B2 Copying data from a first cluster to a second cluster to reassign storage areas from the first cluster to the second cluster 有权
标题翻译：将数据从第一个集群复制到第二个集群，以将存储区域从第一个集群重新分配到第二个集群
公开(公告)号：US07761680B2
公开(公告)日：2010-07-20
申请号：US11696099
申请日：2007-04-03
申请人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F12/00
CPC分类号： G06F12/0873 , G06F11/2033 , G06F11/2046 , G06F11/2097 , G06F2212/284
摘要： Provided are a method, system, and article of manufacture for copying data from a first cluster to a second cluster to reassign storage areas from the first cluster to the second cluster. An operation is initiated to reassign storage areas from a first cluster to a second cluster, wherein the first cluster includes a first cache and a first storage unit and the second cluster includes a second cache and a second storage unit. Data in the first cache for the storage areas to reassign to the second cluster is copied to the second cache. Data in the first storage unit for storage areas remaining assigned to the first cluster is copied to the second storage unit.
摘要翻译：提供了用于将数据从第一集群复制到第二集群的方法，系统和制品，以将从第一集群到第二集群的存储区域重新分配。启动操作以将存储区域从第一集群重新分配到第二集群，其中第一集群包括第一高速缓存和第一存储单元，并且第二集群包括第二高速缓存和第二存储单元。将第一个缓存中的数据重新分配给第二个集群的存储区域复制到第二个缓存。第一存储单元中的剩余分配给第一集群的存储区域的数据被复制到第二存储单元。

13. 发明授权

US07680982B2 Preservation of cache data following failover 有权
标题翻译：故障转移后保存缓存数据
公开(公告)号：US07680982B2
公开(公告)日：2010-03-16
申请号：US11676634
申请日：2007-02-20
申请人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F12/00
CPC分类号： G06F12/0804 , G06F11/1666 , G06F11/2092 , G06F12/0866
摘要： In a data storage subsystem with disk storage and a pair of clusters, one set of DASD fast write data is in cache of one cluster and in non-volatile data storage of the other. In response to a failover of one of the pair of clusters to a local cluster, the local cluster converts the DASD fast write data in local cache to converted fast write data to prioritize the converted data for destaging to disk storage. In response to failure to destage, the local cluster allocates local non-volatile storage tracks and emulates a host adapter to store the converted fast write data by the local non-volatile storage, reconverting the converted fast write data of the non-volatile storage to local DASD fast write data stored in the local non-volatile storage and stored in the local cache storage.
摘要翻译：在具有磁盘存储和一对集群的数据存储子系统中，一组DASD快速写入数据位于一个集群的缓存中，而在另一个集群的非易失性数据存储中。为了响应一对集群中的一个到本地集群的故障切换，本地集群将本地缓存中的DASD快速写入数据转换为转换的快速写入数据，以便将转换后的数据优先转发到磁盘存储。为了应对未能到达的目的地，本地集群分配本地非易失性存储轨迹，并模拟主机适配器以存储由本地非易失性存储器转换的快速写入数据，将非易失性存储器的转换的快速写入数据重新转换为本地DASD快速写入数据存储在本地非易失性存储器中并存储在本地缓存中。

14. 发明授权

US06775738B2 Method, system, and program for caching data in a storage controller 失效
标题翻译：用于缓存存储控制器中数据的方法，系统和程序
公开(公告)号：US06775738B2
公开(公告)日：2004-08-10
申请号：US09932765
申请日：2001-08-17
申请人： Kevin John Ash , Brent Cameron Beardsley , Michael Thomas Benhase
发明人： Kevin John Ash , Brent Cameron Beardsley , Michael Thomas Benhase
IPC分类号： G06F1200
CPC分类号： G06F12/0873 , G06F12/0804 , G06F2212/262 , G06F2212/285
摘要： Provided is a method, system, and program for caching updates to one target storage device in a first and second memories, wherein the target storage device is one of a plurality of storage devices. A determination is made of an allocation of available space in the second memory to the storage devices, wherein a total of the allocation of the available space to all the storage devices exceeds one hundred percent of the available space in the second memory. An update to one target storage device is received and then a determination is made as to whether adding the update to the second memory will exceed the allocation of available space for the target storage device in the second memory. One copy of the update is written to the second memory if adding the update to the second memory will not exceed the allocation of available space for the target storage device.
摘要翻译：提供了一种用于将更新缓存到第一和第二存储器中的一个目标存储设备的方法，系统和程序，其中目标存储设备是多个存储设备之一。确定第二存储器中的可用空间的分配给存储设备，其中对所有存储设备的可用空间的总共分配超过第二存储器中的可用空间的百分之一。接收对一个目标存储设备的更新，然后确定是否将对第二存储器的更新添加将超过第二存储器中的目标存储设备的可用空间的分配。如果将更新添加到第二个内存中，则将更新的一个副本写入第二个内存不会超过目标存储设备的可用空间分配。

15. 发明授权

US06785771B2 Method, system, and program for destaging data in cache 失效
标题翻译：用于在缓存中降级数据的方法，系统和程序
公开(公告)号：US06785771B2
公开(公告)日：2004-08-31
申请号：US10005003
申请日：2001-12-04
申请人： Kevin John Ash , Brent Cameron Beardsley , Michael Thomas Benhase , Joseph Smith Hyde, II , Thomas Charles Jarvis , Steven Robert Lowe , David Frank Mannenbach
发明人： Kevin John Ash , Brent Cameron Beardsley , Michael Thomas Benhase , Joseph Smith Hyde, II , Thomas Charles Jarvis , Steven Robert Lowe , David Frank Mannenbach
IPC分类号： G06F1200
CPC分类号： G06F12/0871 , G06F12/0804
摘要： Provided is a method, system, and program for destaging data from a first computer readable medium to a second computer readable medium. A list of entries indicating data blocks in the first computer readable medium is scanned. For each entry scanned, a determination is made as to whether the data block indicated in the scanned entry satisfies a criteria. If the data block indicated in the scanned entry satisfies the criteria, then a destage operation is called to destage the data block in the scanned entry from the first computer readable medium to the second computer readable medium. If the called destage operation is not initiated, then the scanned entry is removed from the cache list. The removed scanned entry is added to one destage wait list. During one destage operation, data blocks indicated in entries in the destage wait list are destaged.
摘要翻译：提供了一种用于将数据从第一计算机可读介质降级到第二计算机可读介质的方法，系统和程序。扫描第一计算机可读介质中指示数据块的条目列表。对于扫描的每个条目，确定扫描条目中指示的数据块是否满足标准。如果扫描条目中指示的数据块满足标准，则调度一个转移操作以将扫描条目中的数据块从第一计算机可读介质转移到第二计算机可读介质。如果未启动所呼叫的终止操作，则从缓存列表中删除扫描的条目。已删除的扫描条目将添加到一个目的地等待列表中。在一个运行期间，在目的地等待列表中的条目中指示的数据块已停止运行。

16. 发明授权

US07171610B2 Method, system, and article of manufacture for preventing data loss 有权
标题翻译：防止数据丢失的方法，系统和制造
公开(公告)号：US07171610B2
公开(公告)日：2007-01-30
申请号：US10170666
申请日：2002-06-12
申请人： Kevin John Ash , Michael Thomas Benhase , Carol Santich Mellgren , Brian Anthony Rinaldi , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Carol Santich Mellgren , Brian Anthony Rinaldi , Kenneth Wayne Todd
IPC分类号： G06F11/26 , G06F11/36
CPC分类号： G06F11/1666 , G06F11/0727 , G06F11/079 , G06F11/20
摘要： Provided are a method, system, and an article of manufacture for preventing data loss. Modified data is stored in a volatile storage. The stored modified data is copied onto a non-volatile storage. A determination is made as to whether the non-volatile storage should be checked for errors. In certain implementations, on determining that the nonvolatile storage should be checked for errors the non-volatile storage is checked for errors. If on checking the non-volatile storage is found to have an error, an indication of the error is provided.
摘要翻译：提供了一种用于防止数据丢失的方法，系统和制品。修改后的数据存储在易失性存储器中。存储的修改数据被复制到非易失性存储器上。确定是否应检查非易失性存储器的错误。在某些实现中，在确定应该检查非易失性存储器的错误时，检查非易失性存储器的错误。如果检查非易失性存储器发现有错误，则提供错误的指示。

17. 发明授权

US08438332B2 Apparatus and method to maintain write operation atomicity where a data transfer operation crosses a data storage medium track boundary 有权
标题翻译：在数据传输操作跨越数据存储介质磁道边界的情况下，维持写操作原子性的装置和方法
公开(公告)号：US08438332B2
公开(公告)日：2013-05-07
申请号：US12489354
申请日：2009-06-22
申请人： Kevin John Ash , Jeffrey Michael Barnes , Michael Thomas Benhase , Shachar Fienblit , Matthew Joseph Kalos , Steven Edward Klein , Gail Andrea Spear
发明人： Kevin John Ash , Jeffrey Michael Barnes , Michael Thomas Benhase , Shachar Fienblit , Matthew Joseph Kalos , Steven Edward Klein , Gail Andrea Spear
IPC分类号： G06F12/00
CPC分类号： G06F11/1438 , G06F2201/82
摘要： A method to maintain write operation atomicity where a write operation crosses a data storage medium track boundary. The method supplies a storage controller comprising a host adapter, a processor, and a NVS. The host adapter receives from a host computer a write request and data. The method determines if the write request will cross a data storage medium track boundary. If the write request will cross a data storage medium track boundary, the method indicates to the host adapter that the write request comprises a two-track transfer, and writes the data to the NVS as the data is received. If the host computer fails prior to providing all the data to the storage controller, the method discards the data written to the NVS to ensure write operation atomicity.
摘要翻译：一种在写操作与数据存储介质磁道边界交叉的情况下维持写操作原子性的方法。该方法提供包括主机适配器，处理器和NVS的存储控制器。主机适配器从主机接收写入请求和数据。该方法确定写入请求是否将跨越数据存储介质轨道边界。如果写请求将跨越数据存储介质磁道边界，则该方法向主机适配器指示写请求包括双磁道传输，并且在接收到数据时将数据写入NVS。如果主计算机在将所有数据提供给存储控制器之前失败，该方法将丢弃写入NVS的数据，以确保写操作的原子性。

18. 发明授权

US08914340B2 Apparatus, system, and method for relocating storage pool hot spots 有权
标题翻译：存储池热点搬迁的设备，系统和方法
公开(公告)号：US08914340B2
公开(公告)日：2014-12-16
申请号：US12027140
申请日：2008-02-06
申请人： Kevin John Ash , Benjamin Jay Donie , Andreas Bernardus Mattias Koster
发明人： Kevin John Ash , Benjamin Jay Donie , Andreas Bernardus Mattias Koster
IPC分类号： G06F13/00 , G06F17/30 , G06F3/06
CPC分类号： G06F17/303 , G06F3/0611 , G06F3/0647 , G06F3/0683 , G06F2206/1012
摘要： An apparatus, system, and method are disclosed for relocating storage pool hot spots. An identification module identifies a hot spot on a first storage pool if accesses to the first storage pool exceed an access threshold. The first storage pool is part of a plurality of storage pools. Each storage pool comprises a plurality of logical segments from a plurality of storage devices. Each storage device is of a specified class. A migration module dynamically migrates data of a first logical segment to a second storage pool. The migration is transparent to a host and the data of the first logical segment is continuously available to the host.
摘要翻译：公开了用于重新定位存储池热点的装置，系统和方法。如果对第一存储池的访问超过访问阈值，则识别模块识别第一存储池上的热点。第一个存储池是多个存储池的一部分。每个存储池包括来自多个存储设备的多个逻辑段。每个存储设备都是一个指定的类。迁移模块将第一逻辑段的数据动态迁移到第二个存储池。迁移对于主机是透明的，并且第一逻辑段的数据对主机持续可用。

19. 发明授权

US07818533B2 Storing location identifier in array and array pointer in data structure for write process management 失效
标题翻译：将数据和数组指针中的位置标识符存储在写入过程管理的数据结构中
公开(公告)号：US07818533B2
公开(公告)日：2010-10-19
申请号：US12409337
申请日：2009-03-23
申请人： Kenneth Wayne Todd , Kevin John Ash
发明人： Kenneth Wayne Todd , Kevin John Ash
IPC分类号： G06F12/00
CPC分类号： G06F3/0659 , G06F3/0619 , G06F3/0689
摘要： Provided are a method, system, and program for managing write processes in which a list of destination location identifiers for pending write operations is maintained in an array having an array pointer which identifies the next available entry of the array. In one embodiment, the array includes a stack of variable size. Adding a destination location identifier of a pending write operation increases the size of the stack. Removing a destination location identifier of a completed write operation reduces the size of the stack. A stack index may be incremented as write operation destination location identifiers are added and may be decremented as write operation destination location identifiers are removed from the stack.
摘要翻译：提供了一种用于管理写入处理的方法，系统和程序，其中用于待写入操作的目的地位置标识符的列表被维护在具有标识数组的下一个可用条目的数组指针的数组中。在一个实施例中，阵列包括可变大小的堆叠。添加待处理写入操作的目标位置标识符会增加堆栈的大小。删除完成的写入操作的目标位置标识符可以减小堆栈的大小。随着写入操作目的地位置标识符的添加，堆栈索引可以增加，并且可以从堆栈中移除写入操作目的地位置标识符来递减堆栈索引。

20. 发明申请

US20090319743A1 APPARATUS, SYSTEM, AND METHOD FOR MIGRATING WEAR SPOTS 有权
标题翻译：装置，系统和移动磨损的方法
公开(公告)号：US20090319743A1
公开(公告)日：2009-12-24
申请号：US12144427
申请日：2008-06-23
申请人： Kevin John Ash , Benjamin Jay Donie , Andreas Bernardus Mattias Koster
发明人： Kevin John Ash , Benjamin Jay Donie , Andreas Bernardus Mattias Koster
IPC分类号： G06F12/00
CPC分类号： G06F12/0246 , G06F2212/7211
摘要： An apparatus, system, and method are disclosed for migrating wear spots in solid-state drives. A count module counts lifetime write cycles for logical units of a plurality of solid-state memories. Each logical unit has a logical address. An identification module identifies a wear spot on a first logical unit of a first solid-state memory if a count for the first logical unit exceeds a cycle threshold. A migration module dynamically migrates data of the first logical unit to a second solid-state memory, wherein the data is continuously available at an original logical address.
摘要翻译：公开了用于在固态驱动器中迁移磨损点的装置，系统和方法。计数模块对多个固态存储器的逻辑单元计数寿命写周期。每个逻辑单元都有一个逻辑地址。如果第一逻辑单元的计数超过周期阈值，则识别模块识别第一固态存储器的第一逻辑单元上的磨损点。迁移模块将第一逻辑单元的数据动态迁移到第二固态存储器，其中数据在原始逻辑地址处连续可用。

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