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    USING AN ATTRIBUTE OF A WRITE REQUEST TO DETERMINE WHERE TO CACHE DATA IN A STORAGE SYSTEM HAVING MULTIPLE CACHES INCLUDING NON-VOLATILE STORAGE CACHE IN A SEQUENTIAL ACCESS STORAGE DEVICE
    21.
    发明申请
    USING AN ATTRIBUTE OF A WRITE REQUEST TO DETERMINE WHERE TO CACHE DATA IN A STORAGE SYSTEM HAVING MULTIPLE CACHES INCLUDING NON-VOLATILE STORAGE CACHE IN A SEQUENTIAL ACCESS STORAGE DEVICE 失效
    使用写请求的属性来确定在具有多个缓存的存储系统中的数据，包括在顺序访问存储设备中的非易失性存储缓存

    公开(公告)号：US20120303877A1

    公开(公告)日：2012-11-29

    申请号：US13474481

    申请日：2012-05-17

    申请人： Michael T. Benhase ,  Binny S. Gill ,  Lokesh M. Gupta ,  Matthew J. Kalos

    发明人： Michael T. Benhase ,  Binny S. Gill ,  Lokesh M. Gupta ,  Matthew J. Kalos

    IPC分类号： G06F12/02

    CPC分类号： G06F12/0866 ,  G06F12/123

    摘要： Provided are a computer program product, system, and method for using an attribute of a write request to determine where to cache data in a storage system having multiple caches including non-volatile storage cache in a sequential access storage device. Received modified tracks are cached in the non-volatile storage device integrated with the sequential access storage device in response to determining to cache the modified tracks. A write request having modified tracks is received. A determination is made as to whether an attribute of the received write request satisfies a condition. The received modified tracks for the write request are cached in the non-volatile storage device in response to determining that the determined attribute does not satisfy the condition. A destage request is added to a request queue for the received write request having the determined attribute not satisfying the condition.

    摘要翻译： 提供了一种用于使用写请求的属性来确定在具有多个高速缓存的存储系统中的数据的高速缓存的位置的计算机程序产品，系统和方法，包括非易失性存储高速缓存在顺序访问存储设备中。 响应于确定缓存修改的轨道，接收的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。 接收到具有修改轨迹的写入请求。 确定所接收的写请求的属性是否满足条件。 响应于确定所确定的属性不满足条件，用于写入请求的接收的修改的轨道被缓存在非易失性存储设备中。 对于具有不满足条件的确定属性的接收到的写入请求，向请求队列添加了一个流出请求。

    CACHE MANAGEMENT OF TRACKS IN A FIRST CACHE AND A SECOND CACHE FOR A STORAGE
    22.
    发明申请
    CACHE MANAGEMENT OF TRACKS IN A FIRST CACHE AND A SECOND CACHE FOR A STORAGE 有权
    第一次高速缓存的缓存管理和存储的第二个高速缓存

    公开(公告)号：US20120303872A1

    公开(公告)日：2012-11-29

    申请号：US13456011

    申请日：2012-04-25

    申请人： Michael T. Benhase ,  Binny S. Gill ,  Lokesh M. Gupta ,  Matthew J. Kalos

    发明人： Michael T. Benhase ,  Binny S. Gill ,  Lokesh M. Gupta ,  Matthew J. Kalos

    IPC分类号： G06F12/02 ,  G06F12/12

    CPC分类号： G06F12/0804 ,  G06F11/1666 ,  G06F11/20 ,  G06F12/0868 ,  G06F12/0897

    摘要： Provided a computer program product, system, and method for cache management of tracks in a first cache and a second cache for a storage. The first cache maintains modified and unmodified tracks in the storage subject to Input/Output (I/O) requests. Modified and unmodified tracks are demoted from the first cache. The modified and the unmodified tracks demoted from the first cache are promoted to the second cache. The unmodified tracks demoted from the second cache are discarded. The modified tracks in the second cache that are at proximate physical locations on the storage device are grouped and the grouped modified tracks are destaged from the second cache to the storage device.

    摘要翻译： 提供了一种用于高速缓存管理第一高速缓存中的磁道的计算机程序产品，系统和方法以及用于存储的第二高速缓存。 第一个缓存在存储器中保留受输入/输出（I / O）请求的修改和未修改的轨道。 修改和未修改的曲目从第一个缓存降级。 从第一缓存降级的经修改和未修改的轨道被提升到第二缓存。 从第二个缓存中降级的未修改的轨道被丢弃。 第二高速缓存中处于存储设备附近的物理位置的经修改的轨道被分组，并且分组的经修改的轨道从第二高速缓存移动到存储设备。

    Cache management of tracks in a first cache and a second cache for a storage
    23.
    发明授权
    Cache management of tracks in a first cache and a second cache for a storage 有权
    缓存管理第一个缓存中的磁道和第二个缓存用于存储

    公开(公告)号：US08793436B2

    公开(公告)日：2014-07-29

    申请号：US13113974

    申请日：2011-05-23

    申请人： Michael T. Benhase ,  Binny S. Gill ,  Lokesh M. Gupta ,  Matthew J. Kalos

    发明人： Michael T. Benhase ,  Binny S. Gill ,  Lokesh M. Gupta ,  Matthew J. Kalos

    IPC分类号： G06F12/00

    CPC分类号： G06F12/0804 ,  G06F11/1666 ,  G06F11/20 ,  G06F12/0868 ,  G06F12/0897

    摘要： Provided a computer program product, system, and method for cache management of tracks in a first cache and a second cache for a storage. The first cache maintains modified and unmodified tracks in the storage subject to Input/Output (I/O) requests. Modified and unmodified tracks are demoted from the first cache. The modified and the unmodified tracks demoted from the first cache are promoted to the second cache. The unmodified tracks demoted from the second cache are discarded. The modified tracks in the second cache that are at proximate physical locations on the storage device are grouped and the grouped modified tracks are destaged from the second cache to the storage device.

    摘要翻译： 提供了一种用于高速缓存管理第一高速缓存中的磁道的计算机程序产品，系统和方法以及用于存储的第二高速缓存。 第一个缓存在存储器中保留受输入/输出（I / O）请求的修改和未修改的轨道。 修改和未修改的曲目从第一个缓存降级。 从第一缓存降级的经修改和未修改的轨道被提升到第二缓存。 从第二个缓存中降级的未修改的轨道被丢弃。 第二高速缓存中处于存储设备附近的物理位置的经修改的轨道被分组，并且分组的经修改的轨道从第二高速缓存移动到存储设备。

    Using an attribute of a write request to determine where to cache data in a storage system having multiple caches including non-volatile storage cache in a sequential access storage device
    24.
    发明授权
    Using an attribute of a write request to determine where to cache data in a storage system having multiple caches including non-volatile storage cache in a sequential access storage device 失效
    使用写请求的属性来确定在具有多个高速缓存的存储系统中缓存数据的位置，包括在顺序访问存储设备中的非易失性存储高速缓存

    公开(公告)号：US08745325B2

    公开(公告)日：2014-06-03

    申请号：US13474481

    申请日：2012-05-17

    申请人： Michael T. Benhase ,  Binny S. Gill ,  Lokesh M. Gupta ,  Matthew J. Kalos

    发明人： Michael T. Benhase ,  Binny S. Gill ,  Lokesh M. Gupta ,  Matthew J. Kalos

    IPC分类号： G06F12/00

    CPC分类号： G06F12/0866 ,  G06F12/123

    摘要： Provided are a computer program product, system, and method for using an attribute of a write request to determine where to cache data in a storage system having multiple caches including non-volatile storage cache in a sequential access storage device. Received modified tracks are cached in the non-volatile storage device integrated with the sequential access storage device in response to determining to cache the modified tracks. A write request having modified tracks is received. A determination is made as to whether an attribute of the received write request satisfies a condition. The received modified tracks for the write request are cached in the non-volatile storage device in response to determining that the determined attribute does not satisfy the condition. A destage request is added to a request queue for the received write request having the determined attribute not satisfying the condition.

    摘要翻译： 提供了一种用于使用写请求的属性来确定在具有多个高速缓存的存储系统中的数据的高速缓存的位置的计算机程序产品，系统和方法，所述多个高速缓存包括顺序存取存储设备中的非易失性存储高速缓存。 响应于确定缓存修改的轨道，接收的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。 接收到具有修改轨迹的写入请求。 确定所接收的写请求的属性是否满足条件。 响应于确定所确定的属性不满足条件，用于写入请求的接收的修改的轨道被缓存在非易失性存储设备中。 对于具有不满足条件的确定属性的接收到的写入请求，向请求队列添加了一个流出请求。

    Apparatus and method to manage a data cache using a first and second least recently used list
    26.
    发明授权
    Apparatus and method to manage a data cache using a first and second least recently used list 有权
    使用第一和第二最近最少使用的列表来管理数据高速缓存的设备和方法

    公开(公告)号：US07260679B2

    公开(公告)日：2007-08-21

    申请号：US10964474

    申请日：2004-10-12

    申请人： Michael T. Benhase ,  Binny S. Gill ,  Thomas C. Jarvis ,  Dharmendra S. Modha

    发明人： Michael T. Benhase ,  Binny S. Gill ,  Thomas C. Jarvis ,  Dharmendra S. Modha

    IPC分类号： G06F12/12 ,  G06F13/00

    CPC分类号： G06F12/123 ,  G06F12/0866

    摘要： A method is disclosed to manage a data cache. The method provides a data cache comprising a plurality of tracks, where each track comprises one or more segments. The method further maintains a first LRU list comprising one or more first tracks having a low reuse potential, maintains a second LRU list comprising one or more second tracks having a high reuse potential, and sets a target size for the first LRU list. The method then accesses a track, and determines if that accessed track comprises a first track. If the method determines that the accessed track comprises a first track, then the method increases the target size for said first LRU list. Alternatively, if the method determines that the accessed track comprises a second track, then the method decreases the target size for said first LRU list. The method demotes tracks from the first LRU list if its size exceeds the target size; otherwise, the method evicts tracks from the second LRU list.

    摘要翻译： 公开了一种管理数据高速缓存的方法。 该方法提供包括多个轨道的数据高速缓存，其中每个轨道包括一个或多个段。 该方法还维护包括具有低再利用潜力的一个或多个第一轨道的第一LRU列表，维护包括具有高重用潜力的一个或多个第二轨道的第二LRU列表，并设置第一LRU列表的目标大小。 然后，该方法访问轨道，并且确定所访问的轨道是否包括第一轨道。 如果方法确定所访问的轨道包括第一轨道，则该方法增加所述第一LRU列表的目标大小。 或者，如果该方法确定所访问的轨道包括第二轨道，则该方法减小所述第一LRU列表的目标大小。 该方法如果其大小超过目标大小，则会从第一个LRU列表中降低轨迹; 否则，该方法从第二LRU列表中逐出轨道。

    Increased destaging efficiency by smoothing destaging between current and desired number of destage tasks
    28.
    发明授权
    Increased destaging efficiency by smoothing destaging between current and desired number of destage tasks 有权
    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：US09442847B2

    公开(公告)日：2016-09-13

    申请号：US13363092

    申请日：2012-01-31

    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 system may comprise a processor device operable in the computing storage environment. The processor device calculates a current number of the destaging tasks and calculates a desired number of the destaging tasks. The processor device smoothes the destaging of the of the destaging tasks between the desired number of the destaging tasks and the current number of the destaging tasks by accelerating the calculating of the current number of the destaging tasks and the desired number of the destaging tasks, according to either a time interval or a variable recomputed destaging task interval, for reaching the desired number of the destaging tasks by decrementing the current number of destaging tasks or incrementing the current number of destaging tasks.

    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。 系统可以包括可在计算存储环境中操作的处理器设备。 处理器设备计算当前的目标数量并计算所需的数目的降级任务。 处理器设备通过加速计算当前数量的降级任务和期望数量的降级任务来平滑所需数目的目标任务数目与当前数量的目标任务之间的目标任务的分级，根据 到时间间隔或变量重新计算的降级任务间隔，以通过减少当前数量的降级任务或增加当前数量的降级任务来达到期望数量的降级任务。

    Assigning device adaptors and background tasks to use to copy source extents to target extents in a copy relationship
    29.
    发明授权
    Assigning device adaptors and background tasks to use to copy source extents to target extents in a copy relationship 有权
    分配设备适配器和后台任务以用于将源区域复制到复制关系中的目标区域

    公开(公告)号：US08972676B2

    公开(公告)日：2015-03-03

    申请号：US13016834

    申请日：2011-01-28

    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 ,  G06F11/14

    CPC分类号： G06F3/065 ,  G06F3/0617 ,  G06F3/0619 ,  G06F3/0631 ,  G06F3/0665 ,  G06F3/067 ,  G06F3/0689 ,  G06F11/1448 ,  G06F11/1456 ,  G06F11/1466

    摘要： Provided are a computer program product, system, and method for assigning device adaptors and background tasks to use to copy source extents to target extents in a copy relationship. A relation is provided of a plurality of source extents in source ranks to copy to a plurality of target extents in target ranks in the storage system. One target rank in the relation is used to determine an order in which the target ranks in the relation are selected to register for copying. For each selected target rank in the relation selected according to the determined order, an iteration of a registration operation is performed to register the selected target rank and a selected source rank copied to the selected target rank in the relation. The registration operation comprises indicating in a device adaptor assignment data structure a source device adaptor and target device adaptor to use to copy the selected rank to the selected target rank and adding an entry to a priority queue for the relation for the selected target rank. The selected source rank is copied to the selected target rank using as the source and target device adaptors indicated in the device adaptor assignment data structure for the selected target rank in response to processing the entry in the priority queue added to the priority queue for the selected target rank.

    摘要翻译： 提供了一种用于分配设备适配器和后台任务的计算机程序产品，系统和方法，用于将源区段复制到复制关系中的目标区域。 在源级别中提供多个源盘区的关系，以复制到存储系统中的目标队列中的多个目标盘区。 该关系中的一个目标等级用于确定选择该关系中的目标队列进行注册以进行复制的顺序。 对于根据确定的顺序选择的关系中的每个所选择的目标等级，执行注册操作的迭代以将所选择的目标等级和所选择的源等级复制到所述关系中的所选择的目标等级。 注册操作包括在设备适配器中指示数据结构指定源设备适配器和目标设备适配器以用于将所选择的等级复制到所选择的目标等级，并且将用于所选目标等级的关系的条目添加到优先级队列中。 响应于处理加入到所选择的优先级队列的优先级队列中的条目，使用作为所选择的目标等级的设备适配器分配数据结构中指示的源和目标设备适配器将所选择的源等级复制到所选择的目标等级， 目标等级。

    Periodic destages from inside and outside diameters of disks to improve read response time via traversal of a spatial ordering of tracks
    30.
    发明授权
    Periodic destages from inside and outside diameters of disks to improve read response time via traversal of a spatial ordering of tracks 有权
    通过圆盘的内部和外部直径定期运行，以通过遍历轨道的空间排序来提高读取响应时间

    公开(公告)号：US08838905B2

    公开(公告)日：2014-09-16

    申请号：US13299054

    申请日：2011-11-17

    申请人： Michael T. Benhase ,  Lokesh M. Gupta ,  Christopher J. Strauss ,  Will A. Wright

    发明人： Michael T. Benhase ,  Lokesh M. Gupta ,  Christopher J. Strauss ,  Will A. Wright

    IPC分类号： G06F12/00

    CPC分类号： G11B21/025 ,  G06F12/126

    摘要： A storage controller that includes a cache, receives a command from a host, wherein a set of criteria corresponding to read response times for executing the command have to be satisfied. A destage application that destages tracks based at least on recency of usage and spatial location of the tracks is executed, wherein a spatial ordering of the tracks is maintained in a data structure, and the destage application traverses the spatial ordering of the tracks. Tracks are destaged from at least inside or outside diameters of disks at periodic intervals, while traversing the spatial ordering of the tracks, wherein the set of criteria corresponding to the read response times for executing the command are satisfied.

    摘要翻译： 一种包括缓存的存储控制器，从主机接收命令，其中必须满足与用于执行命令的读取响应时间相对应的一组标准。 执行至少基于轨道的使用和空间位置的重新排列来追踪轨道的转移应用，其中，轨道的空间排序被保持在数据结构中，并且目的地应用遍历轨道的空间排序。 在穿过轨道的空间排序的同时，以周期性间隔从至少内部或外部直径的磁道中移动轨迹，其中满足与用于执行该命令的读取响应时间对应的一组标准。