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公开(公告)号：US08095738B2
公开(公告)日：2012-01-10
申请号：US12484963
申请日：2009-06-15
IPC分类号： G06F12/00
CPC分类号： G06F12/0873 , G06F12/0868 , G06F12/0871 , G06F12/121 , G06F2212/261
摘要： A method for allocating space in a cache based on media I/O speed is disclosed herein. In certain embodiments, such a method may include storing, in a read cache, cache entries associated with faster-responding storage devices and cache entries associated with slower-responding storage devices. The method may further include implementing an eviction policy in the read cache. This eviction policy may include demoting, from the read cache, the cache entries of faster-responding storage devices faster than the cache entries of slower-responding storage devices, all other variables being equal. In certain embodiments, the eviction policy may further include demoting, from the read cache, cache entries having a lower read-hit ratio faster than cache entries having a higher read-hit ratio, all other variables being equal. A corresponding computer program product and apparatus are also disclosed and claimed herein.
摘要翻译： 本文公开了一种基于媒体I / O速度在高速缓存中分配空间的方法。 在某些实施例中，这种方法可以包括在读取缓存中存储与更快响应的存储设备相关联的高速缓存条目以及与较慢响应的存储设备相关联的高速缓存条目。 该方法还可以包括在读取高速缓存中实现逐出策略。 这种驱逐策略可以包括从读取的缓存降低响应较快的存储设备的高速缓存条目比缓慢响应的存储设备的缓存条目更快，所有其他变量相等。 在某些实施例中，驱逐策略还可以包括从读取的缓存降级具有比具有较高读取命中率的高速缓存条目更低的读命中率的高速缓存条目，所有其他变量相等。 本文还公开并要求相应的计算机程序产品和装置。
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公开(公告)号：US20120131293A1
公开(公告)日：2012-05-24
申请号：US12950992
申请日：2010-11-19
CPC分类号： G06F3/065 , G06F11/1076 , G06F2211/1014
摘要： Embodiments of the disclosure relate to archiving data in a storage system. An exemplary embodiment comprises making a flash copy of data in a source volume, compressing data in the flash copy wherein each track of data is compressed into a set of data pages, and storing the compressed data pages in a target volume. Data extents for the target volume may be allocated from a pool of compressed data extents. After each stride worth of data is compressed and stored in the target volume, data may be destaged to avoid destage penalties. Data from the target volume may be decompressed from a flash copy of the target volume in a reverse process to restore each data track, when the archived data is needed. Data may be compressed and uncompressed using a Lempel-Ziv-Welch process.
摘要翻译： 本公开的实施例涉及在存储系统中归档数据。 示例性实施例包括在源卷中进行数据的闪速复制，压缩闪存中的数据，其中数据的每个轨道被压缩成一组数据页，并将压缩的数据页存储在目标卷中。 可以从压缩数据盘区池中分配目标卷的数据盘区。 在每一步数据的数据被压缩并存储在目标卷中之后，数据可能会被排除以避免流失的惩罚。 当需要归档数据时，目标卷的数据可以以相反的过程从目标卷的闪存副本中解压缩，以恢复每个数据轨道。 数据可以使用Lempel-Ziv-Welch进程进行压缩和解压缩。
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公开(公告)号：US08918607B2
公开(公告)日：2014-12-23
申请号：US12950992
申请日：2010-11-19
CPC分类号： G06F3/065 , G06F11/1076 , G06F2211/1014
摘要： Embodiments of the disclosure relate to archiving data in a storage system. An exemplary embodiment comprises making a flash copy of data in a source volume, compressing data in the flash copy wherein each track of data is compressed into a set of data pages, and storing the compressed data pages in a target volume. Data extents for the target volume may be allocated from a pool of compressed data extents. After each stride worth of data is compressed and stored in the target volume, data may be destaged to avoid destage penalties. Data from the target volume may be decompressed from a flash copy of the target volume in a reverse process to restore each data track, when the archived data is needed. Data may be compressed and uncompressed using a Lempel-Ziv-Welch process.
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公开(公告)号：US08255627B2
公开(公告)日：2012-08-28
申请号：US12577164
申请日：2009-10-10
IPC分类号： G06F12/00
CPC分类号： G06F12/0804 , G06F11/1008 , G06F11/1076 , G06F12/0866
摘要： A method for efficiently using a large secondary cache is disclosed herein. In certain embodiments, such a method may include accumulating, in a secondary cache, a plurality of data tracks. These data tracks may include modified data and/or unmodified data. The method may determine if a subset of the plurality of data tracks makes up a full stride. In the event the subset makes up a full stride, the method may destage the subset from the secondary cache. By destaging full strides, the method reduces the number of disk operations that are required to destage data from the secondary cache. A corresponding computer program product and apparatus are also disclosed and claimed herein.
摘要翻译： 本文公开了一种高效地使用大型二级高速缓存的方法。 在某些实施例中，这种方法可以包括在二次高速缓存中累积多个数据轨道。 这些数据轨道可以包括经修改的数据和/或未修改的数据。 该方法可以确定多个数据轨道的一个子集是否构成一个完整的步幅。 在子集构成一个完整的步骤的情况下，该方法可能会从二级缓存中退出该子集。 通过降级整个步骤，该方法减少了从二级缓存中恢复数据所需的磁盘操作数。 本文还公开并要求相应的计算机程序产品和装置。
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公开(公告)号：US08549225B2
公开(公告)日：2013-10-01
申请号：US13430613
申请日：2012-03-26
IPC分类号： G06F12/00
CPC分类号： G06F12/0804 , G06F11/1008 , G06F11/1076 , G06F12/0866
摘要： A method for efficiently using a large secondary cache is disclosed herein. In certain embodiments, such a method may include accumulating, in a secondary cache, a plurality of data tracks. These data tracks may include modified data and/or unmodified data. The method may determine if a subset of the plurality of data tracks makes up a full stride. In the event the subset makes up a full stride, the method may destage the subset from the secondary cache. By destaging full strides, the method reduces the number of disk operations that are required to destage data from the secondary cache. A corresponding computer program product and apparatus are also disclosed herein.
摘要翻译： 本文公开了一种高效地使用大型二级高速缓存的方法。 在某些实施例中，这种方法可以包括在二次高速缓存中累积多个数据轨道。 这些数据轨道可以包括经修改的数据和/或未修改的数据。 该方法可以确定多个数据轨道的一个子集是否构成一个完整的步幅。 在子集构成一个完整的步骤的情况下，该方法可能会从二级缓存中退出该子集。 通过降级整个步骤，该方法减少了从二级缓存中恢复数据所需的磁盘操作数。 本文还公开了相应的计算机程序产品和装置。
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6.发明授权Method, system, and program for an adaptor to read and write to system memory 有权用于读取和写入系统内存的适配器的方法，系统和程序公开(公告)号：US08024524B2
公开(公告)日：2011-09-20
申请号：US12537987
申请日：2009-08-07
申请人： Michael Thomas Benhase , James Chien-Chung Chen , Yu-Cheng Hsu , Matthew Joseph Kalos , Carol Spanel , Andrew Dale Walls
发明人： Michael Thomas Benhase , James Chien-Chung Chen , Yu-Cheng Hsu , Matthew Joseph Kalos , Carol Spanel , Andrew Dale Walls
CPC分类号： G06F12/0866 , G06F12/1081
摘要： Provided are a method, system, and program for an adaptor to read and write to system memory. A plurality of blocks of data to write to storage are received at an adaptor. The blocks of data are added to a buffer in the adaptor. A determination is made of pages in a memory device and I/O requests are generated to write the blocks in the buffer to the determined pages, wherein two I/O requests are generated to write to one block split between two pages in the memory device. The adaptor executes the generated I/O requests to write the blocks in the buffer to the determined pages in the memory device.
摘要翻译： 提供了适配器读取和写入系统内存的方法，系统和程序。 在适配器处接收要写入存储器的多个数据块。 数据块被添加到适配器中的缓冲区。 确定存储器设备中的页面并且生成I / O请求以将缓冲器中的块写入到所确定的页面，其中生成两个I / O请求以写入存储器设备中的两个页面之间的一个块分割 。 适配器执行生成的I / O请求，将缓冲区中的块写入存储器设备中确定的页面。
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7.发明申请DETERMINING WHETHER TO USE A FULL VOLUME OR REPOSITORY FOR A LOGICAL COPY BACKUP SPACE 有权确定无论对逻辑复制备份空间使用全部或备注公开(公告)号：US20090150626A1
公开(公告)日：2009-06-11
申请号：US11952021
申请日：2007-12-06
IPC分类号： G06F12/16
CPC分类号： G06F11/1456 , G06F11/1448 , G06F2201/84
摘要： Provided are a method, system, and article of manufacture for determining whether to use a full volume or repository for a logical copy backup space. A determination is made of a source volume to backup using a logical copy operation. The logical copy operation is completed upon indicating the source volume data to backup. During a logical copy duration, point-in-time data in the source volume as of a point-in-time when the logical copy was established is copied to a backup space in response to receiving an update to the point-in-time data. A history of writes to the source volume is processed to determine whether to allocate a full target volume as the backup space providing a corresponding data unit for each data unit in the source volume or allocate a repository as the backup space, wherein the repository uses less storage space than the full target volume. The logical copy operation using the determined full target volume or repository as the backup space is initiated.
摘要翻译： 提供了用于确定是否对逻辑副本备份空间使用完整卷或存储库的方法，系统和制品。 使用逻辑复制操作确定要备份的源卷。 在指定要备份的源卷数据时，完成逻辑复制操作。 在逻辑复制期间，当逻辑副本建立时，源卷中的时间点数据被复制到备份空间，以响应于接收到时间点数据的更新 。 处理对源卷的写入历史以确定是否将完整目标卷分配为备份空间，为源卷中的每个数据单元提供相应的数据单元，或者将存储库分配为备份空间，其中存储库使用较少 存储空间大于完整目标卷。 启动使用确定的完整目标卷或存储库作为备份空间的逻辑复制操作。
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8.发明授权Determining whether to use a full volume or repository for a logical copy backup space 有权确定是否对逻辑副本备份空间使用完整卷或存储库公开(公告)号：US07991972B2
公开(公告)日：2011-08-02
申请号：US11952021
申请日：2007-12-06
CPC分类号： G06F11/1456 , G06F11/1448 , G06F2201/84
摘要： Provided are a method, system, and article of manufacture for determining whether to use a full volume or repository for a logical copy backup space. A determination is made of a source volume to backup using a logical copy operation. The logical copy operation is completed upon indicating the source volume data to backup. During a logical copy duration, point-in-time data in the source volume as of a point-in-time when the logical copy was established is copied to a backup space in response to receiving an update to the point-in-time data. A history of writes to the source volume is processed to determine whether to allocate a full target volume as the backup space providing a corresponding data unit for each data unit in the source volume or allocate a repository as the backup space, wherein the repository uses less storage space than the full target volume. The logical copy operation using the determined full target volume or repository as the backup space is initiated.
摘要翻译： 提供了用于确定是否对逻辑副本备份空间使用完整卷或存储库的方法，系统和制品。 使用逻辑复制操作确定要备份的源卷。 在指定要备份的源卷数据时，完成逻辑复制操作。 在逻辑复制期间，当逻辑副本建立时，源卷中的时间点数据被复制到备份空间，以响应于接收到时间点数据的更新 。 处理对源卷的写入历史以确定是否将完整目标卷分配为备份空间，为源卷中的每个数据单元提供相应的数据单元，或者将存储库分配为备份空间，其中存储库使用较少 存储空间大于完整目标卷。 启动使用确定的完整目标卷或存储库作为备份空间的逻辑复制操作。
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9.发明申请公开(公告)号：US20090216954A1
公开(公告)日：2009-08-27
申请号：US12038557
申请日：2008-02-27
IPC分类号： G06F12/12
CPC分类号： G06F12/0804 , G06F12/0866
摘要： An apparatus, system, and method are disclosed for selecting a space efficient repository. A cache receives write data. A destage module destages the data sequentially to a coarse grained repository such as a stride level repository and destages a directory entry for the data to a coarse grained directory such as a stride level directory if the data satisfies a repository policy. In addition, the destage module destages the data to a fine grained repository such as a track level repository overwriting an existing data instance and destages the directory entry to a fine grained directory such as a track level directory if the data does not satisfy the repository policy.
摘要翻译： 公开了一种用于选择空间有效的储存库的装置，系统和方法。 高速缓存接收写入数据。 如果数据满足存储库策略，则迁移模块会将数据顺序地运行到粗粒度存储库（例如跨级存储库），并将数据的目录条目迁移到粗粒度目录（如stride级目录）。 此外，如果数据不满足存储库策略，则迁移模块会将数据迁移到诸如轨道级别存储库之类的细粒度存储库，以覆盖现有数据实例，并将目录项目迁移到细粒度目录（如磁道级目录） 。
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10.发明授权公开(公告)号：US08312210B2
公开(公告)日：2012-11-13
申请号：US11969185
申请日：2008-01-03
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28 , G06F9/26 , G06F9/34 , G06F7/00 , G06F17/00 , G06F15/00 , G06F13/12 , G06F13/38
CPC分类号： G06F17/30067
摘要： An apparatus, system, and method are disclosed for storing and retrieving compressed data. A compression module compresses a data file organized in logical tracks. A ratio module determines a track compression ratio. The track compression ratio is a ratio of an integer value n to one. A destage module destages a single directory entry for the data file to a directory. The directory entry points to a zeroth track on a hard disk drive. The destage module further destages the data file sequentially to tracks of the hard disk drive from the zeroth track with n logical tracks of the data file stored on one physical track of the hard disk drive. A stage module stages a kth logical track from a physical track of the hard disk drive. The physical track is specified by an integer value of k divided by n.
摘要翻译： 公开了用于存储和检索压缩数据的装置，系统和方法。 压缩模块压缩组织在逻辑轨道中的数据文件。 比率模块确定轨道压缩比。 轨道压缩比是整数值n与1的比率。 一个目的地模块将数据文件的单个目录条目转发到目录。 目录条目指向硬盘驱动器上的第零个磁道。 目的地模块进一步使数据文件从数据文件的顺序轨道到第零轨道，其中存储在硬盘驱动器的一个物理轨道上的数据文件的n个逻辑磁道。 舞台模块从硬盘驱动器的物理轨道分级第k个逻辑磁道。 物理轨道由k除以n的整数值指定。
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