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1. 发明授权

US09158706B2 Selective space reclamation of data storage memory employing heat and relocation metrics 有权
标题翻译：使用热和重定位度量的数据存储存储器的选择性空间回收
公开(公告)号：US09158706B2
公开(公告)日：2015-10-13
申请号：US13285890
申请日：2011-10-31
申请人： Michael T. Benhase , Evangelos S. Eleftheriou , Lokesh M. Gupta , Robert Haas , Xiao-Yu Hu , Matthew J. Kalos , Ioannis Koltsidas , Roman A. Pletka
发明人： Michael T. Benhase , Evangelos S. Eleftheriou , Lokesh M. Gupta , Robert Haas , Xiao-Yu Hu , Matthew J. Kalos , Ioannis Koltsidas , Roman A. Pletka
IPC分类号： G06F12/08 , G06F12/12
CPC分类号： G06F12/122 , G06F3/0608 , G06F3/0652 , G06F3/0683 , G06F12/0253 , G06F12/0871 , G06F12/121 , G06F12/126 , G06F12/128 , G06F2212/222 , G06F2212/7205
摘要： Space of a data storage memory of a data storage memory system is reclaimed by determining heat metrics of data stored in the data storage memory; determining relocation metrics related to relocation of the data within the data storage memory; determining utility metrics of the data relating the heat metrics to the relocation metrics for the data; and making the data whose utility metric fails a utility metric threshold, available for space reclamation. Thus, data that otherwise may be evicted or demoted, but that meets or exceeds the utility metric threshold, is exempted from space reclamation and is instead maintained in the data storage memory.
摘要翻译：通过确定存储在数据存储存储器中的数据的热度量来回收数据存储存储器系统的数据存储器的空间; 确定与数据存储存储器内的数据的重新定位相关的重定位度量; 将与所述热量度量相关的数据的效用度量确定为所述数据的重定位度量; 并使其实用度量值的数据失效，可用于空间回收。因此，否则可能被逐出或降级但满足或超过效用度量阈值的数据被免除空间回收，而是保留在数据存储存储器中。

2. 发明授权

US09135181B2 Management of cache memory in a flash cache architecture 有权
标题翻译：在闪存缓存架构中管理缓存内存
公开(公告)号：US09135181B2
公开(公告)日：2015-09-15
申请号：US13280869
申请日：2011-10-25
申请人： Evangelos Stavros Eleftheriou , Robert Haas , Xiao-Yu Hu
发明人： Evangelos Stavros Eleftheriou , Robert Haas , Xiao-Yu Hu
IPC分类号： G06F13/00 , G06F13/28 , G06F12/08 , G06F12/02
CPC分类号： G06F12/0888 , G06F12/0246
摘要： A method for managing cache memory in a flash cache architecture. The method includes providing a storage cache controller, at least a flash memory comprising a flash controller, and at least a backend storage device, and maintaining read cache metadata for tracking on the flash memory cached data to be read, and write cache metadata for tracking on the flash memory data expected to be cached.
摘要翻译：一种用于在闪存缓存架构中管理高速缓存存储器的方法。该方法包括提供存储高速缓存控制器，至少包括闪存控制器的闪速存储器，以及至少后端存储设备，并且维护读取高速缓存元数据，用于跟踪要读取的闪速存储器缓存的数据，以及写入用于跟踪的高速缓存元数据闪存数据预计将被缓存。

3. 发明授权

US09037951B2 Data management in solid state storage systems 有权
标题翻译：固态存储系统中的数据管理
公开(公告)号：US09037951B2
公开(公告)日：2015-05-19
申请号：US13516627
申请日：2010-12-16
申请人： Roy D. Cideciyan , Evangelos S. Eleftheriou , Robert Haas , Xiao-Yu Hu , Ilias Iliadas , Thomas Mittelholzer
发明人： Roy D. Cideciyan , Evangelos S. Eleftheriou , Robert Haas , Xiao-Yu Hu , Ilias Iliadas , Thomas Mittelholzer
IPC分类号： G06F11/10 , G11C29/00
CPC分类号： G06F11/1008 , G06F11/1012 , G06F11/1068 , G06F11/108
摘要： Methods and apparatus are provided for controlling data management operations including storage of data in solid state storage of a solid state storage system. Input data is stored in successive groups of data write locations in the solid state storage. Each group comprises a set of write locations in each of a plurality of logical subdivisions of the solid state storage. The input data to be stored in each group is encoded in accordance with first and second linear error correction codes. The encoding is performed by constructing from the input data to be stored in each group a logical array of rows and columns of data symbols. The rows and columns are respectively encoded in accordance with the first and second linear error correction codes to produce an encoded array in which all rows correspond to respective first codewords and columns correspond to respective second codewords.
摘要翻译：提供了用于控制数据管理操作的方法和装置，包括固态存储系统的固态存储中的数据的存储。输入数据存储在固态存储器中的连续的数据写入位置组中。每个组包括在固态存储器的多个逻辑子部分的每一个中的一组写入位置。要存储在每个组中的输入数据根据第一和第二线性纠错码进行编码。通过从输入数据中构成数据符号的行和列的逻辑阵列，来构成编码。行和列分别根据第一和第二线性纠错码编码以产生编码阵列，其中所有行对应于相应的第一码字和列对应于相应的第二码字。

4. 发明申请

US20150052413A1 DECODING OF LDPC CODE 有权
标题翻译： LDPC码的解码
公开(公告)号：US20150052413A1
公开(公告)日：2015-02-19
申请号：US14358609
申请日：2011-05-25
申请人： Evangelos S. Eleftheriou , Robert Haas , Xiao-Yu Hu , Dung Nguyen
发明人： Evangelos S. Eleftheriou , Robert Haas , Xiao-Yu Hu , Dung Nguyen
IPC分类号： H03M13/11
CPC分类号： H03M13/1105 , H03M13/1108 , H03M13/2957
摘要： It is provided a method for decoding a sequence of bits encoded by a LPDC code. The method comprises providing a set of bit states, including a first state and a second state, and a set of conditions to change a bit state including a first condition 5 and a second condition. The first condition and the second condition are different. The method comprises reading the value of each bit of the sequence, associating each bit to a respective state of the set according to the values as read, determining that an evaluated condition is met and changing the state of the target bit as a result of the condition being met. The method may then set the value of the target bit of the 10 sequence according to the state thereof. Such a method provides a solution for decoding a sequence of bits encoded by a LDPC code with better performance than the classic bit-flipping algorithm with only a slight increase in complexity.
摘要翻译：提供了一种用于解码由LPDC码编码的比特序列的方法。该方法包括提供一组位状态，包括第一状态和第二状态，以及一组条件以改变包括第一条件5和第二状态的位状态。第一个条件和第二个条件是不同的。该方法包括读取序列的每个比特的值，根据读取的值将每个比特与组的相应状态相关联，确定满足评估条件并改变目标比特的状态作为结果条件得到满足然后，该方法可以根据其状态设置10序列的目标比特的值。这种方法提供了一种解码方案，用于以比典型的比特翻转算法更好的性能来解码由LDPC码编码的比特序列，只有稍微增加的复杂度。

5. 发明授权

US08930624B2 Adaptive cache promotions in a two level caching system 有权
公开(公告)号：US08930624B2
公开(公告)日：2015-01-06
申请号：US13412412
申请日：2012-03-05
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： G06F12/00 , G06F3/06
CPC分类号： G06F12/128 , G06F12/126
摘要： Provided are a computer program product, system, and method for managing data in a first cache and a second cache. A reference count is maintained in the second cache for the page when the page is stored in the second cache. It is determined that the page is to be promoted from the second cache to the first cache. In response to determining that the reference count is greater than zero, the page is added to a Least Recently Used (LRU) end of an LRU list in the first cache. In response to determining that the reference count is less than or equal to zero, the page is added to a Most Recently Used (LRU) end of the LRU list in the first cache.

6. 发明授权

US08688897B2 Cache memory management in a flash cache architecture 失效
标题翻译：缓存内存管理在闪存缓存架构中
公开(公告)号：US08688897B2
公开(公告)日：2014-04-01
申请号：US13080655
申请日：2011-04-05
申请人： Evangelos S. Eleftheriou , Robert Haas , Xiao-Yu Hu , Roman A. Pletka
发明人： Evangelos S. Eleftheriou , Robert Haas , Xiao-Yu Hu , Roman A. Pletka
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28 , G06F9/26 , G06F9/34
CPC分类号： G06F12/0246 , G06F12/0871 , G06F12/0897 , G06F2212/222 , G06F2212/7202
摘要： Provided are a system, method, and computer program product for managing cache memory to cache data units in at least one storage device. A cache controller is coupled to at least two flash bricks, each comprising a flash memory. Metadata indicates a mapping of the data units to the flash bricks caching the data units, wherein the metadata is used to determine the flash bricks on which the cache controller caches received data units. The metadata is updated to indicate the flash brick having the flash memory on which data units are cached.
摘要翻译：提供了一种用于管理高速缓冲存储器以在至少一个存储设备中缓存数据单元的系统，方法和计算机程序产品。高速缓存控制器耦合到至少两个闪存块，每个闪存块包括闪存。元数据表示数据单元与缓存数据单元的闪存块的映射，其中元数据用于确定高速缓存控制器高速缓存接收的数据单元的闪存块。更新元数据以指示闪存块具有缓存数据单元的闪存。

7. 发明授权

US08661196B2 Optimizing locations of data accessed by client applications interacting with a storage system 有权
标题翻译：优化与存储系统交互的客户端应用程序访问的数据的位置
公开(公告)号：US08661196B2
公开(公告)日：2014-02-25
申请号：US13209514
申请日：2011-08-15
申请人： Evangelos S. Eleftheriou , Robert Galbraith , Adrian C. Gerhard , Robert Haas , Xiao-Yu Hu , Murali N. Iyer , Ioannis Koltsidas , Timothy J. Larson , Steven P. Norgaard , Roman Pletka
发明人： Evangelos S. Eleftheriou , Robert Galbraith , Adrian C. Gerhard , Robert Haas , Xiao-Yu Hu , Murali N. Iyer , Ioannis Koltsidas , Timothy J. Larson , Steven P. Norgaard , Roman Pletka
IPC分类号： G06F12/00
CPC分类号： G06F11/1076 , G06F3/061 , G06F3/0662 , G06F3/0685
摘要： A method for optimizing locations of physical data accessed by one or more client applications interacting with a storage system, with the storage system comprising at least two redundancy groups having physical memory spaces and data bands. Each of the data bands corresponds to physical data stored on several of the physical memory spaces. A virtualized logical address space includes client data addresses utilizable by the one or more client applications. A storage controller is configured to map the client data addresses onto the data bands, such that a mapping is obtained, wherein the one or more client applications can access physical data corresponding to the data bands.
摘要翻译：一种用于优化由与存储系统交互的一个或多个客户端应用访问的物理数据的位置的方法，其中所述存储系统包括具有物理存储器空间和数据带的至少两个冗余组。每个数据带对应于存储在几个物理存储器空间上的物理数据。虚拟化逻辑地址空间包括由一个或多个客户端应用程序可使用的客户机数据地址。存储控制器被配置为将客户端数据地址映射到数据带上，使得获得映射，其中一个或多个客户端应用可以访问对应于数据带的物理数据。

8. 发明申请

US20130111106A1 PROMOTION OF PARTIAL DATA SEGMENTS IN FLASH CACHE 有权
标题翻译：在FLASH CACHE中推广部分数据段
公开(公告)号：US20130111106A1
公开(公告)日：2013-05-02
申请号：US13286465
申请日：2011-11-01
申请人： Michael T. BENHASE , Stephen L. BLINICK , Evangelos S. ELEFTHERIOU , Lokesh M. GUPTA , Robert HAAS , Xiao-Yu HU , Matthew J. KALOS , Ioannis KOLTSIDAS , Karl A. NIELSEN , Roman A. PLETKA
发明人： Michael T. BENHASE , Stephen L. BLINICK , Evangelos S. ELEFTHERIOU , Lokesh M. GUPTA , Robert HAAS , Xiao-Yu HU , Matthew J. KALOS , Ioannis KOLTSIDAS , Karl A. NIELSEN , Roman A. PLETKA
IPC分类号： G06F12/08 , G06F12/00
CPC分类号： G06F3/0619 , G06F3/0646 , G06F3/0688 , G06F12/0246 , G06F12/0253 , G06F12/0811 , G06F12/0862 , G06F12/0864 , G06F12/0871 , G06F12/0897 , G06F12/122 , G06F12/127 , G06F12/128 , G06F2212/1016 , G06F2212/154 , G06F2212/222 , G06F2212/283 , G06F2212/604 , G06F2212/702 , G06F2212/7201
摘要： Exemplary method, system, and computer program product embodiments for efficient track destage in secondary storage in a more effective manner, are provided. In one embodiment, by way of example only, for temporal bits employed with sequential bits for controlling the timing for destaging the track in a primary storage, the temporal bits and sequential bits are transferred from the primary storage to the secondary storage. The temporal bits are allowed to age on the secondary storage. Additional system and computer program product embodiments are disclosed and provide related advantages.
摘要翻译：提供了用于以更有效的方式在二次存储中有效地追踪排水的示例性方法，系统和计算机程序产品实施例。在一个实施例中，仅作为示例，对于与用于控制主存储器中的跟踪的定时的顺序位一起使用的时间位，时间位和顺序位从主存储器传送到次存储器。时间位允许在辅助存储器上老化。公开了附加的系统和计算机程序产品实施例并提供相关的优点。

9. 发明授权

US08402242B2 Write-erase endurance lifetime of memory storage devices 有权
标题翻译：存储器存储设备的写擦除耐久寿命
公开(公告)号：US08402242B2
公开(公告)日：2013-03-19
申请号：US12511577
申请日：2009-07-29
申请人： Xiao-yu Hu , Evangelos S. Eleftheriou , Robert Haas
发明人： Xiao-yu Hu , Evangelos S. Eleftheriou , Robert Haas
IPC分类号： G06F12/00
CPC分类号： B62D35/001 , G06F12/0246 , G06F2212/1044 , G06F2212/7205 , G06F2212/7211 , G11C16/349 , G11C16/3495
摘要： A memory management system and method for managing memory blocks of a memory device of a computer. The system includes a free block data structure including free memory blocks for writing, and sorting the free memory blocks in a predetermined order based on block write-erase endurance cycle count and receiving new user-write requests to update existing data and relocation write requests to relocate existing data separately, a user-write block pool for receiving youngest blocks holding user-write data (i.e., any page being updated frequently) from the free block data structure, a relocation block pool for receiving oldest blocks holding relocation data (i.e., any page being updated infrequently) from the free block data structure, and a garbage collection pool structure for selecting at least one of user-write blocks and relocation blocks for garbage collection, wherein the selected block is moved back to the free block data structure upon being relocated and erased.
摘要翻译：一种用于管理计算机的存储器件的存储器块的存储器管理系统和方法。该系统包括一个空闲块数据结构，包括用于写入的空闲存储器块，并且基于块写擦除耐久循环计数以预定顺序对可用存储器块进行排序，并且接收新的用户写入请求以更新现有数据和重定位写请求重新定位现有数据，用于从空闲块数据结构接收持有用户写入数据（即，任何频繁更新的页面）的最小块的用户写入块池，用于接收保存重定位数据的最旧块的重定位块池（即，任何不经常更新的页面）以及用于选择用于垃圾回收的用户写入块和重定位块中的至少一个的垃圾收集池结构，其中所选择的块被移动回到空闲块数据结构被搬迁和删除。

10. 发明申请

US20130013980A1 Data Management in Solid State Storage Devices 审中-公开
标题翻译：固态存储设备中的数据管理
公开(公告)号：US20130013980A1
公开(公告)日：2013-01-10
申请号：US13617571
申请日：2012-09-14
申请人： Roy D. Cideciyan , Evangelos S. Eleftheriou , Robert Haas , Xiao-Yu Hu , Ilias Iliadis
发明人： Roy D. Cideciyan , Evangelos S. Eleftheriou , Robert Haas , Xiao-Yu Hu , Ilias Iliadis
IPC分类号： H03M13/05
CPC分类号： G06F11/108 , G06F11/1008 , G06F11/1068 , H03M13/05
摘要： A mechanism is provided for controlling a solid state storage device in which the solid state storage comprises erasable blocks each comprising a plurality of data write locations. Input data is stored in successive groups of data write locations, each group comprising write locations in a set of erasable blocks in each of a plurality of logical subdivisions of the solid state storage. The input data is error correction encoded such that each group contains an error correction code for the input data in that group. Metadata, indicating the location of input data in the solid state storage, is maintained in memory. An indication of validity of data stored in each data write location is also maintained. Prior to erasing a block, valid input data is recovered from the or each said group containing write locations in that block. The recovered data is then re-stored as new input data.
摘要翻译：提供一种用于控制固态存储装置的机构，其中固态存储器包括每个包括多个数据写入位置的可擦除块。输入数据被存储在连续的数据写入位置组中，每个组包括在固态存储器的多个逻辑分区中的每一个中的一组可擦除块中的写入位置。输入数据被纠错编码，使得每个组包含用于该组中的输入数据的纠错码。指示固态存储器中的输入数据的位置的元数据被保存在存储器中。还保持了存储在每个数据写入位置中的数据的有效性的指示。在擦除块之前，从该块中包含写入位置的该组或每个所述组恢复有效的输入数据。然后将恢复的数据重新存储为新的输入数据。

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