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公开(公告)号：US20130185495A1
公开(公告)日：2013-07-18
申请号：US13352236
申请日：2012-01-17
CPC分类号： G06F12/0833 , G06F3/0619 , G06F3/0667 , G06F3/0689 , G06F12/0246 , G06F12/0871 , G06F12/0897 , G06F12/122 , G06F12/123 , G06F12/128 , G06F2212/225 , G06F2212/7209
摘要： Information on strides configured in the second cache includes information indicating a number of valid tracks in the strides, wherein a stride has at least one of valid tracks and free tracks not including valid data. A determination is made of tracks to demote from the first cache. A first stride is formed including the determined tracks to demote. The tracks from the first stride are added to a second stride in the second cache that has no valid tracks. A target stride in the second cache is selected based on a stride most recently used to consolidate strides from at least two strides into one stride. Data from the valid tracks is copied from at least two source strides in the second cache to the target stride.
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公开(公告)号：US20130185493A1
公开(公告)日：2013-07-18
申请号：US13352220
申请日：2012-01-17
CPC分类号： G06F12/123 , G06F12/0813 , G06F12/0833 , G06F12/0868 , G06F12/0897 , G06F12/12 , G06F12/128 , G06F2212/604 , G06F2212/621 , G11C7/1072
摘要： Provided are a computer program product, system, and method for managing caching of extents of tracks in a first cache, second cache and storage device. A determination is made of an eligible track in a first cache eligible for demotion to a second cache, wherein the tracks are stored in extents configured in a storage device, wherein each extent is comprised of a plurality of tracks. A determination is made of an extent including the eligible track and whether second cache caching for the determined extent is enabled or disabled. The eligible track is demoted from the first cache to the second cache in response to determining that the second cache caching for the determined extent is enabled. Selection is made not to demote the eligible track in response to determining that the second cache caching for the determined extent is disabled.
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公开(公告)号：US20130132667A1
公开(公告)日：2013-05-23
申请号：US13299048
申请日：2011-11-17
IPC分类号： G06F12/08
CPC分类号： G06F12/0802 , G06F3/0611 , G06F3/0659 , G06F3/0689 , 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 and write response times for executing the command have to be satisfied. The storage controller determines ranks of a first type and ranks of a second type corresponding to a plurality of volumes coupled to the storage controller, wherein the command is to be executed with respect to the ranks of the first type. Destage rate corresponding to the ranks of the first type are adjusted to be less than a default destage rate corresponding to the ranks of the second type, wherein the set of criteria corresponding to the read and write response times for executing the command are satisfied.
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公开(公告)号：US08443141B2
公开(公告)日：2013-05-14
申请号：US12894017
申请日：2010-09-29
申请人： Brent C. Beardsley , Michael T. Benhase , Lokesh M. Gupta , Joseph S. Hyde, II , Sonny E. Williams
发明人： Brent C. Beardsley , Michael T. Benhase , Lokesh M. Gupta , Joseph S. Hyde, II , Sonny E. Williams
IPC分类号： G06F12/00
CPC分类号： G06F12/126 , G06F12/0804 , G06F12/0868
摘要： Write caching for sequential tracks is performed by a processor device in a computing storage environment for destaging data from nonvolatile storage (NVS) to a storage unit. If a first track is determined to be sequential, and an earlier track is also determined to be sequential, a temporal bit associated with the earlier track is cleared to allow for destage of data of the earlier track. If a temporal bit for one of a plurality of additional tracks in one of a plurality of strides in a modified cache is determined to be not set, a stride associated with the one of the plurality of additional tracks is selected for a destage operation. If the NVS exceeds a predetermined storage threshold, a predetermined one of the plurality of strides is selected for the destage operation.
摘要翻译： 用于顺序轨道的写缓存由用于将数据从非易失性存储（NVS）降级到存储单元的计算存储环境中的处理器设备执行。 如果确定第一轨道是顺序的，并且较早的轨道也被确定为顺序的，则与较早轨道相关联的时间位被清除以允许对先前轨道的数据进行排水。 如果确定修改的高速缓存中的多个步幅之一中的多个附加轨道之一的时间位未被设置，则选择与所述多个附加轨道中的一个相关联的步幅用于码头操作。 如果NVS超过预定的存储阈值，则选择多个步骤中的预定的一个步骤用于排水操作。
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25.发明授权Magnetic disk drive using a non-volatile storage device as cache for modified tracks 有权使用非易失性存储设备的磁盘驱动器作为修改轨道的缓存公开(公告)号：US08437098B2
公开(公告)日：2013-05-07
申请号：US13468885
申请日：2012-05-10
IPC分类号： G11B5/09
CPC分类号： G11B5/09 , G11B5/012 , G11B20/10527 , G11B2020/10657 , G11B2220/2516 , G11B2220/60
摘要： Provided are a computer program product, system, and method for a magnetic disk drive. The disk drive has at least one disk platter having at least one recordable disk surface having an areal density of at least 200 gigabits per square inch. Either a diameter of the at least one disk platter is greater than 3.5 inches or the at least one disk platter rotates at less than 5400 RPMs. A read/write head reads and writes tracks of data with respect to the at least one disk surface. Modified tracks from write requests to write to the at least one disk surface on the at least one disk platter are cached in a non-volatile storage device for caching modified tracks. Modified tracks are cached in the non-volatile storage device to later destage to the at least one disk surface.
摘要翻译： 提供了一种用于磁盘驱动器的计算机程序产品，系统和方法。 磁盘驱动器具有至少一个盘片，其具有至少一个可记录盘表面，其具有至少200吉比特/平方英寸的面密度。 至少一个盘片的直径大于3.5英寸，或至少一个盘片以小于5400RPM转动。 读/写头相对于至少一个盘表面读取和写入数据轨迹。 写入请求写入到至少一个盘片上的至少一个磁盘表面的修改轨迹被缓存在非易失性存储设备中，用于缓存修改的轨道。 修改的轨道被缓存在非易失性存储设备中，以便到达至少一个盘表面。
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公开(公告)号：US08432632B2
公开(公告)日：2013-04-30
申请号：US13113958
申请日：2011-05-23
IPC分类号： G11B5/09
CPC分类号： G11B5/09 , G11B5/012 , G11B20/10527 , G11B2020/10657 , G11B2220/2516 , G11B2220/60
摘要： Provided are a computer program product, system, and method for a magnetic disk drive. The disk drive has at least one disk platter having at least one recordable disk surface having an areal density of at least 200 gigabits per square inch. Either a diameter of the at least one disk platter is greater than 3.5 inches or the at least one disk platter rotates at less than 5400 RPMs. A read/write head reads and writes tracks of data with respect to the at least one disk surface. Modified tracks from write requests to write to the at least one disk surface on the at least one disk platter are cached in a non-volatile storage device for caching modified tracks. Modified tracks are cached in the non-volatile storage device to later destage to the at least one disk surface.
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公开(公告)号：US20130031295A1
公开(公告)日：2013-01-31
申请号：US13452527
申请日：2012-04-20
IPC分类号： G06F12/02
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.
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28.发明申请MANAGING UNMODIFIED TRACKS MAINTAINED IN BOTH A FIRST CACHE AND A SECOND CACHE 有权管理在第一个缓存和第二个缓存中维护的未修改的跟踪公开(公告)号：US20120303898A1
公开(公告)日：2012-11-29
申请号：US13113937
申请日：2011-05-23
IPC分类号： G06F12/08
CPC分类号： G06F12/0897 , G06F12/0871
摘要： Provided are a computer program product, system, and method for managing unmodified tracks maintained in both a first cache and a second cache. The first cache has unmodified tracks in the storage subject to Input/Output (I/O) requests. Unmodified tracks are demoted from the first cache to a second cache. An inclusive list indicates unmodified tracks maintained in both the first cache and a second cache. An exclusive list indicates unmodified tracks maintained in the second cache but not the first cache. The inclusive list and the exclusive list are used to determine whether to promote to the second cache an unmodified track demoted from the first cache.
摘要翻译： 提供了一种用于管理在第一高速缓存和第二高速缓存中保持的未修改轨道的计算机程序产品，系统和方法。 第一个缓存在存储器中具有未修改的轨道，需要输入/输出（I / O）请求。 未修改的轨道从第一缓存降级到第二缓存。 包含的列表指示在第一高速缓存和第二高速缓存中保持的未修改轨道。 排他列表指示在第二缓存中维护的未修改轨道，但不指示第一缓存。 包含列表和排他列表用于确定是否向第二缓存提升从第一高速缓存降级的未修改轨道。
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29.发明申请公开(公告)号：US20120303891A1
公开(公告)日：2012-11-29
申请号：US13113562
申请日：2011-05-23
申请人： Michael T. Benhase , Nose Akihiro , Masaru Sugiura
发明人： Michael T. Benhase , Nose Akihiro , Masaru Sugiura
IPC分类号： G06F12/00
CPC分类号： G06F12/00 , G06F3/061 , G06F3/064 , G06F3/0689 , G06F11/10 , G06F11/2087
摘要： Data that is to be written is received, wherein the data is indicated in one or more blocks of a first block size. Each of the one or more blocks of the first block size is written in consecutive blocks of a second block size that is larger is size than the first block size, wherein each of the consecutive blocks of the second block size stores only one block of the first block size, and wherein each of the consecutive blocks of the second block size has empty space remaining, subsequent to the writing of each of the one or more blocks of the first block size. Filler data is written in the empty space remaining in each of the consecutive blocks of the second block size.
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公开(公告)号：US20120303861A1
公开(公告)日：2012-11-29
申请号：US13113931
申请日：2011-05-23
CPC分类号： G06F12/0804 , G06F11/1076 , G06F11/1666 , G06F12/0866 , G06F12/0897 , G06F2212/262
摘要： Provided are a computer program product, system, and method for populating strides of tracks to demote from a first cache to a second cache. A first cache maintains modified and unmodified tracks from a storage system subject to Input/Output (I/O) requests. A determination is made to demote tracks from the first cache. A determination is made as to whether there are enough tracks ready to demote to form a stride, wherein tracks are written to a second cache in strides defined for a Redundant Array of Independent Disk (RAID) configuration. A stride is populated with tracks ready to demote in response to determining that there are enough tracks ready to demote to form the stride. The stride of tracks, to demote from the first cache, are promoted to the second cache. The tracks in the second cache that are modified are destaged to the storage system.
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