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1. 发明授权

US10152423B2 Selective population of secondary cache employing heat metrics 有权
公开(公告)号：US10152423B2
公开(公告)日：2018-12-11
申请号：US13285817
申请日：2011-10-31
申请人： Kevin J. Ash , Michael T. Benhase , Stephen L. Blinick , Evangelos S. Eleftheriou , Lokesh M. Gupta , Robert Haas , Xiao-Yu Hu , Ioannis Koltsidas , Roman A. Pletka
发明人： Kevin J. Ash , Michael T. Benhase , Stephen L. Blinick , Evangelos S. Eleftheriou , Lokesh M. Gupta , Robert Haas , Xiao-Yu Hu , Ioannis Koltsidas , Roman A. Pletka
IPC分类号： G06F12/0871 , G06F12/0888 , G06F12/0897 , G06F12/128 , G06F12/121
摘要： The population of data to be admitted into secondary data storage cache of a data storage system is controlled by determining heat metrics of data of the data storage system. If candidate data is submitted for admission into the secondary cache, data is selected to tentatively be evicted from the secondary cache; candidate data provided to the secondary data storage cache is rejected if its heat metric is less than the heat metric of the tentatively evicted data; and candidate data submitted for admission to the secondary data storage cache is admitted if its heat metric is equal to or greater than the heat metric of the tentatively evicted data.

2. 发明授权

US09804971B2 Cache management of track removal in a cache for storage 有权
公开(公告)号：US09804971B2
公开(公告)日：2017-10-31
申请号：US13352218
申请日：2012-01-17
申请人： Michael T. Benhase , Lokesh M. Gupta
发明人： Michael T. Benhase , Lokesh M. Gupta
IPC分类号： G06F12/12 , G06F12/123 , G06F12/0866 , G06F17/30
CPC分类号： G06F12/123 , G06F12/0866 , G06F17/3048
摘要： In one embodiment, a cache manager releases a list lock during a scan when a track has been identified as a track for cache removal processing such as demoting the track, for example. By releasing the list lock, other processors have access to the list while the identified track is processed for cache removal. In one aspect, the position of the previous entry in the list may be stored in a cursor or pointer so that the pointer value points to the prior entry in the list. Once the cache removal processing of the identified track is completed, the list lock may be reacquired and the scan may be resumed at the list entry identified by the pointer. Other features and aspects may be realized, depending upon the particular application.

3. 发明授权

US09442848B2 Increased destaging efficiency by smoothing destaging between current and desired number of destage tasks 有权
标题翻译：通过平滑目前和所需数量的目的任务之间的破坏来提高降落效率
公开(公告)号：US09442848B2
公开(公告)日：2016-09-13
申请号：US13538450
申请日：2012-06-29
申请人： Michael T. Benhase , Lokesh M. Gupta , Roger G. Hathorn , Sonny E. Williams
发明人： Michael T. Benhase , Lokesh M. Gupta , Roger G. Hathorn , Sonny E. Williams
IPC分类号： G06F9/46 , G06F9/455 , G06F12/08 , G06F12/12
CPC分类号： G06F12/0804 , G06F12/0868 , G06F12/121 , G06F2212/1024 , G06F2212/281 , G06F2212/312 , G06F2212/462
摘要： Techniques for increased destaging efficiency by smoothing destaging tasks to reduce long input/output (I/O) read operations are described. A method may comprise a processor device operable in the computing storage environment. The processor device destages tasks are calculated according to one of a standard time interval and a variable recomputed destaging task interval. The destaging of storage tracks between a desired number of destaging tasks and a current number of destaging tasks is smoothed according to the calculating.
摘要翻译：描述了通过平滑降级任务以减少长输入/输出（I / O）读取操作来提高降级效率的技术。一种方法可以包括可在计算存储环境中操作的处理器设备。根据标准时间间隔和变量重新计算的降级任务间隔之一来计算到达任务的处理器设备。根据计算，平滑了期望数量的降级任务和当前数量的降级任务之间的存储轨迹的衰减。

4. 发明授权

US09195598B2 Synchronous and asynchronous discard scans based on the type of cache memory 有权
标题翻译：基于高速缓冲存储器类型的同步和异步丢弃扫描
公开(公告)号：US09195598B2
公开(公告)日：2015-11-24
申请号：US13491795
申请日：2012-06-08
申请人： Michael T. Benhase , Lokesh M. Gupta
发明人： Michael T. Benhase , Lokesh M. Gupta
IPC分类号： G06F12/08
CPC分类号： G06F12/0895 , G06F12/0806 , G06F2212/1044 , G06F2212/222 , G06F2212/305 , G06F2212/7205
摘要： A computational device maintains a first type of cache and a second type of cache. The computational device receives a command from the host to release space. The computational device synchronously discards tracks from the first type of cache, and asynchronously discards tracks from the second type of cache.
摘要翻译：计算设备维护第一类型的高速缓存和第二类型的高速缓存。计算设备从主机接收命令以释放空间。计算设备同步地丢弃来自第一类型的高速缓存的轨道，并且异步地丢弃来自第二类型的高速缓存的轨道。

5. 发明授权

US09195403B2 Replicating tracks from a first storage site to a second and third storage sites 有权
标题翻译：将轨道从第一个存储站点复制到第二个和第三个存储站点
公开(公告)号：US09195403B2
公开(公告)日：2015-11-24
申请号：US13612314
申请日：2012-09-12
申请人： Michael T. Benhase , Lokesh M. Gupta , Brian D. Hatfield , Gail A. Spear
发明人： Michael T. Benhase , Lokesh M. Gupta , Brian D. Hatfield , Gail A. Spear
IPC分类号： G06F12/00 , G06F3/06 , G06F12/12 , G06F12/08
CPC分类号： G06F3/0619 , G06F3/0605 , G06F3/065 , G06F3/0665 , G06F3/067 , G06F3/0689 , G06F12/0866 , G06F12/0868 , G06F12/12 , G06F2212/262
摘要： Provided are a computer program product, system, and method for replicating tracks from a first storage to a second and third storages. A determination is made of a track in the first storage to transfer to the second storage as part of a point-in-time copy relationship and of a stride of tracks including the target track. The stride of tracks including the target track is staged from the first storage to a cache according to the point-in-time copy relationship. The staged stride is destaged from the cache to the second storage. The stride in the cache is transferred to the third storage as part of a mirror copy relationship. The stride of tracks in the cache is demoted in response to destaging the stride of the tracks in the cache to the second storage and transferring the stride of tracks in the cache to the third storage.
摘要翻译：提供了一种用于将轨道从第一存储器复制到第二和第三存储器的计算机程序产品，系统和方法。确定在第一存储器中的轨道作为时间点复制关系的一部分和包括目标轨道的轨迹的步幅传送到第二存储器。根据时间点复制关系，将包含目标轨道的轨道的步幅从第一个存储器暂存到高速缓存。分阶段的步伐已经从高速缓存迁移到第二个存储。缓存中的步幅作为镜像复制关系的一部分传输到第三个存储。响应于高速缓存中的轨道的步幅降级到第二存储器并且将高速缓存中的轨迹的步幅传送到第三存储器，缓存中的轨道的步幅被降级。

6. 发明授权

US09069679B2 Adaptive record caching for solid state disks 有权
公开(公告)号：US09069679B2
公开(公告)日：2015-06-30
申请号：US13452527
申请日：2012-04-20
申请人： Michael T. Benhase , Lokesh M. Gupta , Joseph S. Hyde, II , Lee C. LaFrese
发明人： Michael T. Benhase , Lokesh M. Gupta , Joseph S. Hyde, II , Lee C. LaFrese
IPC分类号： G06F12/08
CPC分类号： G06F12/0868 , G06F3/061 , G06F3/0655 , G06F3/0688 , G06F12/0246 , G06F12/0873 , G06F12/0888 , G06F12/122 , G06F12/123 , G06F2212/1021 , G06F2212/1024 , G06F2212/202 , G06F2212/312 , G06F2212/313 , G06F2212/604 , G06F2212/608 , G06F2212/7208
摘要： A storage controller receives a request that corresponds to an access of a track. A determination is made as to whether the track corresponds to data stored in a solid state disk. Record staging to a cache from the solid state disk is performed, in response to determining that the track corresponds to data stored in the solid state disk, wherein each track is comprised of a plurality of records.

7. 发明授权

US09058121B2 Replicating tracks from a first storage site to a second and third storage sites 有权
公开(公告)号：US09058121B2
公开(公告)日：2015-06-16
申请号：US13612314
申请日：2012-09-12
申请人： Michael T. Benhase , Lokesh M. Gupta , Brian D. Hatfield , Gail A. Spear
发明人： Michael T. Benhase , Lokesh M. Gupta , Brian D. Hatfield , Gail A. Spear
IPC分类号： G06F12/00 , G06F3/06 , G06F12/12
摘要： Provided are a computer program product, system, and method for replicating tracks from a first storage to a second and third storages. A determination is made of a track in the first storage to transfer to the second storage as part of a point-in-time copy relationship and of a stride of tracks including the target track. The stride of tracks including the target track is staged from the first storage to a cache according to the point-in-time copy relationship. The staged stride is destaged from the cache to the second storage. The stride in the cache is transferred to the third storage as part of a mirror copy relationship. The stride of tracks in the cache is demoted in response to destaging the stride of the tracks in the cache to the second storage and transferring the stride of tracks in the cache to the third storage.

8. 发明授权

US09021221B2 Cascaded, point-in-time-copy architecture with data deduplication 有权
标题翻译：具有数据重复数据删除的级联，时间点复制体系结构
公开(公告)号：US09021221B2
公开(公告)日：2015-04-28
申请号：US13043389
申请日：2011-03-08
申请人： Michael T. Benhase , Theresa M. Brown , Lokesh M. Gupta , Carol S. Mellgren
发明人： Michael T. Benhase , Theresa M. Brown , Lokesh M. Gupta , Carol S. Mellgren
IPC分类号： G06F12/00 , G06F3/06 , G06F12/02 , G06F17/30
CPC分类号： G06F3/0608 , G06F3/0613 , G06F3/0619 , G06F3/0641 , G06F3/0647 , G06F3/065 , G06F3/0655 , G06F3/067 , G06F12/02 , G06F17/3015 , G06F2201/84 , H04L67/1097
摘要： A method for performing a write to a volume x in a cascaded architecture is described. In one embodiment, such a method includes determining whether the volume x has a child volume, wherein each of the volume x and the child volume have a target bit map (TBM) associated therewith. The method then determines whether the TBMs of both the volume x and the child volume are set. If the TBMs are set, the method finds a higher source (HS) volume from which to copy the desired data to the child volume. Finding the HS volume includes travelling up the cascaded architecture until the source of the data is found. Once the HS volume is found, the method copies the data from the HS volume to the child volume and performs the write to the volume x. A method for performing a read is also disclosed herein.
摘要翻译：描述了用于对级联架构中的卷x执行写入的方法。在一个实施例中，这种方法包括确定卷x是否具有子卷，其中卷x和子卷中的每一个都具有与其相关联的目标比特图（TBM）。然后，该方法确定是否设置了卷x和子卷的TBM。如果设置了TBM，则该方法将找到更高的源（HS）卷，从该卷将所需数据复制到子卷。查找HS音量包括沿着级联架构进行升级，直到找到数据源。找到HS卷后，该方法将数据从HS卷复制到子卷，并对卷x进行写入。本文还公开了一种用于执行读取的方法。

9. 发明授权

US08972662B2 Dynamically adjusted threshold for population of secondary cache 有权
标题翻译：二级缓存人口的动态调整阈值
公开(公告)号：US08972662B2
公开(公告)日：2015-03-03
申请号：US13457290
申请日：2012-04-26
申请人： Michael T. Benhase , Stephen L. Blinick , Evangelos S. Eleftheriou , Lokesh M. Gupta , Robert Haas , Xiao-Yu Hu , Ioannis Koltsidas , Roman A. Pletka
发明人： Michael T. Benhase , Stephen L. Blinick , Evangelos S. Eleftheriou , Lokesh M. Gupta , Robert Haas , Xiao-Yu Hu , Ioannis Koltsidas , Roman A. Pletka
IPC分类号： G06F12/08
CPC分类号： G06F12/0888 , G06F12/0866 , G06F12/0897 , G06F2212/225
摘要： The population of data to be inserted into secondary data storage cache is controlled by determining a heat metric of candidate data; adjusting a heat metric threshold; rejecting candidate data provided to the secondary data storage cache whose heat metric is less than the threshold; and admitting candidate data whose heat metric is equal to or greater than the heat metric threshold. The adjustment of the heat metric threshold is determined by comparing a reference metric related to hits of data most recently inserted into the secondary data storage cache, to a reference metric related to hits of data most recently evicted from the secondary data storage cache; if the most recently inserted reference metric is greater than the most recently evicted reference metric, decrementing the threshold; and if the most recently inserted reference metric is less than the most recently evicted reference metric, incrementing the threshold.
摘要翻译：通过确定候选数据的热度量来控制要插入到辅助数据存储高速缓存中的数据的总数; 调整热量度量阈值; 拒绝提供给热度量小于阈值的次数据存储高速缓存的候选数据; 并且允许其热度量等于或大于热度量阈值的候选数据。通过将与最近插入次级数据存储高速缓存中的数据的命中相关的参考度量与与次级数据存储高速缓存最近被排出的数据的命中相关的参考度量进行比较来确定热度量阈值的调整; 如果最近插入的参考度量值大于最近被驱逐的参考度量，则递减阈值; 并且如果最近插入的参考度量小于最近驱逐的参考度量，则递增阈值。

10. 发明授权

US08825952B2 Handling high priority requests in a sequential access storage device having a non-volatile storage cache 有权
标题翻译：在具有非易失性存储高速缓存的顺序存取存储设备中处理高优先权请求
公开(公告)号：US08825952B2
公开(公告)日：2014-09-02
申请号：US13113953
申请日：2011-05-23
申请人： Michael T. Benhase , Lokesh M. Gupta
发明人： Michael T. Benhase , Lokesh M. Gupta
IPC分类号： G06F12/00
CPC分类号： G06F12/0804 , G06F12/0868 , G06F12/0897 , G06F2212/1016 , G06F2212/225 , G06F2212/285 , G06F2212/312
摘要： Provided are a computer program product, system, and method for handling high priority requests in a sequential access storage device. Received modified tracks for write requests are cached in a non-volatile storage device integrated with the sequential access storage device. A destage request is added to a request queue for a received write request having modified tracks for the sequential access storage medium cached in the non-volatile storage device. A read request indicting a priority is received. A determination is made of a priority of the read request as having a first priority or a second priority. The read request is added to the request queue in response to determining that the determined priority is the first priority. The read request is processed at a higher priority than the read and destage requests in the request queue in response to determining that the determined priority is the second priority.
摘要翻译：提供了一种用于在顺序存取存储设备中处理高优先级请求的计算机程序产品，系统和方法。用于写请求的接收修改的轨道被缓存在与顺序存取存储设备集成的非易失性存储设备中。对于对于缓存在非易失性存储设备中的顺序存取介质的已修改轨道的接收到的写入请求，向请求队列添加了一个丢弃请求。接收到指示优先级的读请求。确定读请求的优先级具有第一优先级或第二优先级。响应于确定所确定的优先级是第一优先级，读请求被添加到请求队列。响应于确定所确定的优先级是第二优先级，读请求以比请求队列中的读取和去往请求更高的优先级被处理。

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