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1. 发明申请

WO2013132370A1 ADAPTIVE CACHE PROMOTIONS IN A TWO LEVEL CACHING SYSTEM 审中-公开
标题翻译：自适应高速缓存在两级缓存系统中的推广
公开(公告)号：WO2013132370A1
公开(公告)日：2013-09-12
申请号：PCT/IB2013/051313
申请日：2013-02-18
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , IBM JAPAN LIMITED
发明人： GUPTA, Lokesh, Mohan , ELEFTHERIOU, Evangelos, Stavros , KOLTSIDAS, Ioannis , HU, Xiao-Yu , PLETKA, Roman , HAAS, Robert , BLINICK, Stephen , BENHASE, Michael, Thomas
IPC分类号： G06F12/12 , G06F3/06 , G06F12/08
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 (MRU) end of the LRU list in the first cache.
摘要翻译：提供了一种用于管理第一高速缓存和第二高速缓存中的数据的计算机程序产品，系统和方法。当页面存储在第二高速缓存中时，对于页面的第二高速缓存中维护引用计数。确定页面将被从第二缓存提升到第一高速缓存。响应于确定参考计数大于零，该页被添加到第一高速缓存中的LRU列表的最近最少使用（LRU）末端。响应于确定参考计数小于或等于零，该页面被添加到第一高速缓存中的LRU列表的最近使用（MRU）端。

2. 发明申请

WO2013064935A1 DYNAMICALLY ADJUSTED THRESHOLD FOR POPULATION OF SECONDARY CACHE 审中-公开
标题翻译：动态调整二级缓存的人口数量
公开(公告)号：WO2013064935A1
公开(公告)日：2013-05-10
申请号：PCT/IB2012/055730
申请日：2012-10-19
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , IBM JAPAN LIMITED
发明人： GUPTA, Lokesh, Mohan , ELEFTHERIOU, Evangelos, Stravros , KOLTSIDAS, Ioannis , HU, Xiao-Yu , PLETKA, Roman , HAAS, Robert , BLINICK, Stephen , BENHASE, Michael, Thomas
IPC分类号： G06F12/12 , G06F3/06
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。

3. 发明申请

WO2017103751A1 RECOVERY OF MULTI-PAGE FAILURES IN NON-VOLATILE MEMORY SYSTEM 审中-公开
标题翻译：非易失性存储器系统中多页面故障的恢复
公开(公告)号：WO2017103751A1
公开(公告)日：2017-06-22
申请号：PCT/IB2016/057479
申请日：2016-12-09
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , IBM (CHINA) INVESTMENT COMPANY LIMITED
发明人： PLETKA, Roman , CAMP, Charles, John , FRY, Aaron, Daniel , FISHER, Timothy, John , IOANNOU, Nikolas , TOMIC, Sasa , PARNELL, Thomas
IPC分类号： G06F11/00
CPC分类号： G06F11/1068 , G06F3/0619 , G06F3/064 , G06F3/0688 , G06F12/0246 , G06F2212/1032 , G06F2212/262
摘要： A data storage system includes a controller and a non-volatile memory array having a plurality of blocks each including a plurality of physical pages. The controller maintains a logical-to-physical translation (LPT）data structure that maps logical addresses to physical addresses and implements a first data protection scheme that stripes write data over the plurality of physica1 blocks. In response to a read request requesting data from a target page stripe, the controller detecting errors in multiple physical pages of the target page stripe. In responsive to detecting errors in multiple physical pages of the target page stripe, the controller scans the LPT data structure to identify a set of logical addresses mapped to the target page stripe and triggers recovery of the target page stripe by a higher level controller that implements a second data protection scheme, wherein triggering recovery includes transmitting the set of logical addresses to the higher level controller.
摘要翻译：数据存储系统包括控制器和具有多个块的非易失性存储器阵列，每个块包括多个物理页面。控制器维护将逻辑地址映射到物理地址的逻辑到物理转换（LPT）数据结构，并且实现在多个物理块上分条写入数据的第一数据保护方案。响应于请求来自所述控制器检测所述目标页面条带的多个物理页面中的错误;响应于检测到所述目标页面条带的多个物理页面中的错误，所述控制器扫描所述LPT数据结构以识别映射到所述目标页面条带的逻辑地址集合目标页面条带并且触发由实现第二数据保护方案的更高级别控制器对条带目标页面的恢复，其中触发恢复包括将该组逻辑地址发送到更高级别控制器。

4. 发明申请

WO2017187334A1 DATA DEDUPLICATION WITH REDUCED HASH COMPUTATIONS 审中-公开
标题翻译：数据重复删除哈希计算
公开(公告)号：WO2017187334A1
公开(公告)日：2017-11-02
申请号：PCT/IB2017/052365
申请日：2017-04-25
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , IBM (CHINA) INVESTMENT COMPANY LIMITED
发明人： FISHER, Timothy, John , IOANNOU, Nikolas , PARNELL, Thomas , PLETKA, Roman , TOMIC, Sasa
IPC分类号： G06F12/00
CPC分类号： G06F11/1004 , G06F3/0608 , G06F3/0641 , G06F3/0644 , G06F3/0661 , G06F3/0688 , G06F16/215
摘要： Techniques for data deduplication in a data storage system include comparing a first attribute of a received data page to first attributes of one or more stored data pages. In response to the first attribute matching one of the first attributes, a second attribute of the received data page is compared to second attributes of the one or more data pages. In response to the second attribute of the received data page matching one of the second attributes, a fingerprint of the received data page is compared to fingerprints of the one or more data pages. In response to the fingerprint of the received data page matching one of the fingerprints, the received data page is discarded and replaced with a reference to the corresponding data page already stored in the storage system. In response to first attribute, the second attribute, or the fingerprint of the received data page not matching, the received data page is stored.
摘要翻译：数据存储系统中的数据重复删除技术包括将接收到的数据页面的第一属性与一个或多个存储的数据页面的第一属性进行比较。响应于与第一属性之一匹配的第一属性，将接收到的数据页面的第二属性与一个或多个数据页面的第二属性进行比较。响应于接收到的数据页面的第二属性匹配第二属性之一，将接收到的数据页面的指纹与一个或多个数据页面的指纹进行比较。响应于接收到的数据页面与指纹之一相匹配的指纹，丢弃接收到的数据页面并且用已经存储在存储系统中的对应数据页面的引用替换。响应于第一属性，第二属性或所接收的数据页面的指纹不匹配，存储所接收的数据页面。

5. 发明申请

WO2013064936A1 METHOD AND SYSTEM FOR SELECTIVE SPACE RECLAMATION OF DATA STORAGE MEMORY EMPLOYING HEAT AND RELOCATION METRICS 审中-公开
标题翻译：选择性空间回收数据存储器的方法和系统采用热和转移量度
公开(公告)号：WO2013064936A1
公开(公告)日：2013-05-10
申请号：PCT/IB2012/055801
申请日：2012-10-22
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , IBM (CHINA) INVESTMENT COMPANY LIMITED
发明人： GUPTA, Lokesh, Mohan , ELEFTHERIOU, Evangelos, Stavros , KOLTSIDAS, Ioannis , HU, Xiao-Yu , PLETKA, Roman , HAAS, Robert , BENHASE, Michael, Thomas , KALOS, Matthew, Joseph
IPC分类号： G06F12/06
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： A method and computer program product for reclaiming space of a data storage memory of a data storage memory system, and a computer-implemented data storage memory system are provided. The method includes: 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：提供了一种用于回收数据存储存储器系统的数据存储器的空间的方法和计算机程序产品，以及计算机实现的数据存储存储器系统。该方法包括：确定存储在数据存储存储器中的数据的热量度; 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。

6. 发明申请

WO2018042270A1 WORKLOAD OPTIMIZED DATA DEDUPLICATION USING GHOST FINGERPRINTS 审中-公开
标题翻译：工作量优化的数据重复使用GHOST指纹
公开(公告)号：WO2018042270A1
公开(公告)日：2018-03-08
申请号：PCT/IB2017/054421
申请日：2017-07-21
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , IBM (CHINA) INVESTMENT COMPANY LIMITED
发明人： IOANNOU, Nikolas , PLETKA, Roman , SONG, Cheng-Chung , STOICA, Radu, Ioan , TOMIC, Sasa , WALLS, Andrew
IPC分类号： G06F17/30
摘要： A controller of a data storage system generates fingerprints of data blocks written to the data storage system. The controller maintains, in a data structure, respective state information for each of a plurality of data blocks. The state information for each data block can be independently set to indicate any of a plurality of states, including at least one deduplication state and at least one non-deduplication state. At allocation of a data block, the controller initializes the state information for the data block to a non-deduplication state and, thereafter, in response to detection of a write of duplicate of the data block to the data storage system, transitions the state information for the data block to a deduplication state. The controller selectively performs data deduplication for data blocks written to the data storage system based on the state information in the data structure and by reference to the fingerprints.
摘要翻译：数据存储系统的控制器产生写入数据存储系统的数据块的指纹。控制器在数据结构中维持多个数据块中的每一个的相应状态信息。每个数据块的状态信息可以被独立设置以指示多个状态中的任何一个，包括至少一个去重复状态和至少一个非去重复状态。在分配数据块时，控制器将数据块的状态信息初始化为非重复删除状态，并且此后，响应于检测到数据块的重复写入到数据存储系统，转换状态信息为数据块重复数据删除状态。控制器基于数据结构中的状态信息并参照指纹有选择地对写入数据存储系统的数据块执行重复数据删除。

7. 发明申请

WO2013064917A1 PROMOTION OF PARTIAL DATA SEGMENTS IN FLASH CACHE 审中-公开
标题翻译：在FLASH CACHE中推广部分数据段
公开(公告)号：WO2013064917A1
公开(公告)日：2013-05-10
申请号：PCT/IB2012/054460
申请日：2012-08-30
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , IBM (CHINA) INVESTMENT COMPANY LIMITED , GUPTA, Lokesh, Mohan , ELEFTHERIOU, Evangelos, Stavros , KOLTSIDAS, Ioannis , HU, Xiao-Yu , PLETKA, Roman , HAAS, Robert , BLINICK, Stephen , KALOS, Matthew, Joseph , NIELSEN, Karl, Allen , BENHASE, Michael, Thomas
发明人： GUPTA, Lokesh, Mohan , ELEFTHERIOU, Evangelos, Stavros , KOLTSIDAS, Ioannis , HU, Xiao-Yu , PLETKA, Roman , HAAS, Robert , BLINICK, Stephen , KALOS, Matthew, Joseph , NIELSEN, Karl, Allen , BENHASE, Michael, Thomas
IPC分类号： G06F12/08
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。

8. 发明申请

WO2011101178A1 INTEGRATING A FLASH CACHE INTO LARGE STORAGE SYSTEMS 审中-公开
标题翻译：将闪存集成到大型存储系统中
公开(公告)号：WO2011101178A1
公开(公告)日：2011-08-25
申请号：PCT/EP2011/050154
申请日：2011-01-07
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , PLETKA, Roman , ELEFTHERIOU, Evangelos , HAAS, Robert , HU, Xiao-Yu , HSU, Yu-Cheng , GUPTA, Lokesh, Mohan , HYDE II, Joseph, Smith , BENHASE, Michael, Thomas , SANCHEZ, Alfred, Emilio , ASH, Kevin, John
发明人： PLETKA, Roman , ELEFTHERIOU, Evangelos , HAAS, Robert , HU, Xiao-Yu , HSU, Yu-Cheng , GUPTA, Lokesh, Mohan , HYDE II, Joseph, Smith , BENHASE, Michael, Thomas , SANCHEZ, Alfred, Emilio , ASH, Kevin, John
IPC分类号： G06F12/08
CPC分类号： G06F12/0866 , G06F3/0611 , G06F3/0655 , G06F3/0685 , G06F2212/214 , G06F2212/2146
摘要： An I/O enclosure module is provided with one or more I/O enclosures having a plurality of slots for receiving electronic devices. A host adapter is connected a first slot of the I/O enclosure module and is configured to connect a host to the I/O enclosure. A device adapter is connected to a second slot of the I/O enclosure module and is configured to connect a storage device to the I/O enclosure module. A flash cache is connected to a third slot of the I/O enclosure module and includes a flash-based memory configured to cache data associated with data requests handled through the I/O enclosure module. A primary processor complex manages data requests handled through the I/O enclosure module by communicating with the host adapter, device adapter, and flash cache to manage to the data requests.
摘要翻译： I / O机箱模块设置有一个或多个具有多个用于接收电子设备的插槽的I / O机箱。主机适配器连接在I / O机箱模块的第一个插槽上，并配置为将主机连接到I / O机箱。设备适配器连接到I / O机箱模块的第二个插槽，并配置为将存储设备连接到I / O机柜模块。闪存缓存连接到I / O机箱模块的第三个插槽，并且包括配置为缓存与通过I / O机箱模块处理的数据请求相关联的数据的基于闪存的存储器。主处理器复合体通过与主机适配器，设备适配器和闪存缓存进行通信来管理通过I / O机箱模块处理的数据请求，以管理数据请求。

9. 发明申请

WO2021084365A1 UPDATING CORRECTIVE READ VOLTAGE OFFSETS IN NON-VOLATILE RANDOM ACCESS MEMORY 审中-公开
公开(公告)号：WO2021084365A1
公开(公告)日：2021-05-06
申请号：PCT/IB2020/059745
申请日：2020-10-16
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM (CHINA) INVESTMENT COMPANY LTD. , IBM DEUTSCHLAND GMBH
发明人： PAPANDREOU, Nikolaos , POZIDIS, Charalampos , IOANNOU, Nikolas , PLETKA, Roman , STOICA, Radu , TOMIC, Sasa , FRY, Aaron , FISHER, Timothy
IPC分类号： G06F11/07 , G06F11/10 , G11C16/26
摘要： A computer-implemented method, according to one approach, includes: using a first calibration scheme to calibrate the given page in the block by calculating a first number of independent read voltage offset values for the given page (606). An attempt is made to read the calibrated given page (608), and in response to determining that an error correction code failure occurred when attempting to read the calibrated given page, a second calibration scheme is used to recalibrate the given page in the block (612). The second calibration scheme is configured to calculate a second number of independent read voltage offset values for the given page. An attempt to read the recalibrated given page is also made (614). In response to determining that an error correction code failure did occur when attempting to read the recalibrated given page, one or more instructions to relocate data stored in the given page are sent (618).

10. 发明申请

WO2023275632A1 MIRRORING DATA IN WRITE CACHES OF CONTROLLER OF NON-VOLATILE MEMORY 审中-公开
公开(公告)号：WO2023275632A1
公开(公告)日：2023-01-05
申请号：PCT/IB2022/054831
申请日：2022-05-24
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM ISRAEL SCIENCE AND TECHNOLOGY LTD. , IBM (CHINA) INVESTMENT COMPANY LTD.
发明人： PLETKA, Roman , FISHER, Timothy , YANES, Adalberto , PAPANDREOU, Nikolaos , STOICA, Radu , POZIDIS, Charalampos , IOANNOU, Nikolas
IPC分类号： G06F12/08 , G06F12/0246 , G06F12/0844 , G06F12/0868 , G06F2212/72 , G06F2212/7201 , G06F2212/7203 , G06F3/0604 , G06F3/061 , G06F3/0611 , G06F3/0613 , G06F3/0656 , G06F3/0659 , G06F3/0679
摘要： A data storage system provides persistent storage in bulk non-volatile memory. A controller of the data storage system receives a host write command and buffers associated host write data in both a first write cache in non-volatile memory and a mirrored second write cache in volatile memory. The controller destages the host write data to the bulk non-volatile memory from the second write cache but not the first write cache. The controller services relocation write commands requesting data relocation within the bulk non-volatile memory by reference to the second write cache. Servicing the relocation write commands includes buffering relocation write data in the second write cache but not the first write cache and destaging the relocation write data to the bulk non-volatile memory from the second write cache.

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