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1. 发明授权

US5535372A Method and apparatus for efficient updating of CKD data stored on fixed block architecture devices 失效
标题翻译：用于有效更新存储在固定块体系结构设备上的CKD数据的方法和装置
公开(公告)号：US5535372A
公开(公告)日：1996-07-09
申请号：US271335
申请日：1994-07-06
申请人： Michael T. Benhase , David A. Burton , John N. McCauley, Jr. , Robert L. Morton
发明人： Michael T. Benhase , David A. Burton , John N. McCauley, Jr. , Robert L. Morton
IPC分类号： G06F3/06 , G11B5/09
CPC分类号： G06F3/0613 , G06F3/064 , G06F3/0674
摘要： A method and apparatus for updating CKD data stored on fixed block media, and more particularly to creating Track Format Descriptors which are data structures loaded into electronic memory to enable fast writing of data without loading an entire CKD emulated track of data into memory. A control unit is provided with logic to provide Track Format Descriptors which describe the format of the track without the need for the data content of the track to be resident in cache, or electronic memory. An emulated CKD volume corresponds to a volume of data stored on a multi-disk device. Each track on a volume is represented by a Track Format Descriptor. The Track Format Descriptor forms a representation of the format according to the following general procedure. If the format is a predefined format, in other words one that is already known by the control unit then a track form descriptor is formed to represent the format. If the format is easily discernible, it is said to be "well behaved". "Well behaved" formats are ones in which either each record has the same field length, there is no key field, or record numbers start at one and increment by one. A Track Format Descriptor is formed by predicting the format of these so called "well behaved" formats. If the format is not "well behaved" and the format has not been predefined, then the entire data track must be loaded into cache memory, before a fast write operation is performed. The Track Format Descriptor serves as an index to other information data structures which are loaded into memory when required by logic in the control unit.
摘要翻译：一种用于更新存储在固定块介质上的CKD数据的方法和装置，更具体地说，涉及创建作为加载到电子存储器中的数据结构的轨道格式描述符，以便能够快速写入数据，而无需将整个CKD仿真数据轨迹加载到存储器中。控制单元被提供有逻辑以提供描述轨道格式的轨道格式描述符，而不需要轨道的数据内容驻留在高速缓存或电子存储器中。仿真的CKD卷对应于存储在多盘设备上的数据量。卷上的每个曲目由轨道格式描述符表示。轨道格式描述符根据以下一般程序形成格式的表示。如果格式是预定义的格式，换句话说是由控制单元已知的格式，则形成轨迹形式描述符来表示格式。如果格式很容易识别，那么它被称为“表现良好”。 “行为良好”的格式是每个记录具有相同的字段长度，没有键字段，或记录号从一个开始并递增一个。轨道格式描述符是通过预测所谓的“良好行为”格式的格式形成的。如果格式不是“良好的行为”，并且格式尚未预定义，则在执行快速写入操作之前，必须将整个数据轨道加载到高速缓存中。轨道格式描述符用作其他信息数据结构的索引，其在控制单元中的逻辑需要时被加载到存储器中。

2. 发明授权

US09336150B2 Performing asynchronous discard scans with staging and destaging operations 有权
标题翻译：使用分段和分段操作执行异步丢弃扫描
公开(公告)号：US09336150B2
公开(公告)日：2016-05-10
申请号：US13491818
申请日：2012-06-08
申请人： Michael T. Benhase , Lokesh M. Gupta , Matthew J. Kalos
发明人： Michael T. Benhase , Lokesh M. Gupta , Matthew J. Kalos
IPC分类号： G06F12/08 , G06F12/02
CPC分类号： G06F12/0866 , G06F3/0608 , G06F3/0619 , G06F3/0641 , G06F3/0665 , G06F3/0689 , G06F12/0246 , G06F12/0804 , G06F12/0868 , G06F2212/2022
摘要： A controller receives a request to perform staging or destaging operations with respect to an area of a cache. A determination is made as to whether one or more discard scans are being performed or queued for the area of the cache. In response to determining that one or more discard scans are being performed or queued for the area of the cache, the controller avoids satisfying the request to perform the staging or the destaging operations with respect to the area of the cache.
摘要翻译：控制器接收关于高速缓存的区域执行分段或降级操作的请求。确定是否正在为高速缓存的区域执行或排队一个或多个丢弃扫描。为了响应于确定为高速缓存区域执行或排队的一个或多个丢弃扫描，控制器避免满足对高速缓存的区域执行登台或降级操作的请求。

3. 发明授权

US08996789B2 Handling high priority requests in a sequential access storage device having a non-volatile storage cache 有权
标题翻译：在具有非易失性存储高速缓存的顺序存取存储设备中处理高优先权请求
公开(公告)号：US08996789B2
公开(公告)日：2015-03-31
申请号：US13411159
申请日：2012-03-02
申请人： Michael T. Benhase , Lokesh M. Gupta
发明人： Michael T. Benhase , Lokesh M. Gupta
IPC分类号： G06F12/00 , G06F12/08
CPC分类号： G06F12/0804 , G06F12/0868 , G06F12/0897 , G06F2212/1016 , G06F2212/225 , G06F2212/285 , G06F2212/312
摘要： Modified tracks for write requests to a sequential access storage medium in a sequential access storage device are cached in a non-volatile storage, which is a faster access device than the sequential access storage medium. A request queue includes destage requests to destage the modified tracks in the non-volatile storage device to the sequential access storage medium and read requests to access read requested tracks from the sequential access storage medium. A comparison is made of a current position of a read/write mechanism with respect to physical locations on the sequential access storage medium of the tracks subject to the destage requests indicated in the request queue. A determination is made of one of the destage requests to process based on the comparison. The modified track for the determined destage request is written from the non-volatile storage device to the sequential access storage medium.
摘要翻译：用于向顺序访问存储设备中的顺序访问存储介质的写请求的修改轨道被缓存在非易失性存储器中，该非易失性存储器是比顺序访问存储介质更快的访问设备。请求队列包括将非易失性存储设备中的经修改的轨道去往顺序存取存储介质并读取从顺序访问存储介质访问读请求的轨道的请求的到达请求。比较读/写机构相对于在请求队列中指示的流出请求的轨道的顺序存取介质上的物理位置的当前位置。根据比较确定要处理的要求之一。用于确定的流出请求的经修改的轨道从非易失性存储设备写入顺序存取存储介质。

4. 发明授权

US08972661B2 Dynamically adjusted threshold for population of secondary cache 有权
公开(公告)号：US08972661B2
公开(公告)日：2015-03-03
申请号：US13285740
申请日：2011-10-31
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： G06F12/08
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.

5. 发明授权

US08966178B2 Populating a first stride of tracks from a first cache to write to a second stride in a second cache 有权
标题翻译：从第一个高速缓冲存储器中填充轨迹的第一步，以写入第二个高速缓存中的第二个步幅
公开(公告)号：US08966178B2
公开(公告)日：2015-02-24
申请号：US13352230
申请日：2012-01-17
申请人： Kevin J. Ash , Michael T. Benhase , Lokesh M. Gupta , Matthew J. Kalos , Karl A. Nielsen
发明人： Kevin J. Ash , Michael T. Benhase , Lokesh M. Gupta , Matthew J. Kalos , Karl A. Nielsen
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
CPC分类号： G06F12/0868 , G06F12/0804 , G06F12/0897 , G06F12/128 , G06F2212/262 , G06F2212/312 , G06F2212/462
摘要： Provided are a computer program product, system, and method for managing data in a cache system comprising a first cache, a second cache, and a storage system. A determination is made of tracks stored in the storage system to demote from the first cache. A first stride is formed including the determined tracks to demote. A determination is made of a second stride in the second cache in which to include the tracks in the first stride. The tracks from the first stride are added to the second stride in the second cache. A determination is made of tracks in strides in the second cache to demote from the second cache. The determined tracks to demote from the second cache are demoted.
摘要翻译：提供了一种用于管理包括第一高速缓存，第二高速缓存和存储系统的高速缓存系统中的数据的计算机程序产品，系统和方法。确定存储在存储系统中的轨道以从第一高速缓存降级。形成第一步，包括确定的轨道降级。确定在第二高速缓存中的第二步，其中包括在第一步中的轨道。来自第一步的轨道被添加到第二缓存中的第二步。确定第二高速缓存中的步幅中的轨迹以从第二高速缓存降级。确定的从第二个缓存降级的轨迹将被降级。

6. 发明授权

US08959279B2 Populating a first stride of tracks from a first cache to write to a second stride in a second cache 有权
公开(公告)号：US08959279B2
公开(公告)日：2015-02-17
申请号：US13464668
申请日：2012-05-04
申请人： Kevin J. Ash , Michael T. Benhase , Lokesh M. Gupta , Matthew J. Kalos , Karl A. Nielsen
发明人： Kevin J. Ash , Michael T. Benhase , Lokesh M. Gupta , Matthew J. Kalos , Karl A. Nielsen
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
CPC分类号： G06F12/0868 , G06F12/0804 , G06F12/0897 , G06F12/128 , G06F2212/262 , G06F2212/312 , G06F2212/462
摘要： Provided are a computer program product, system, and method for managing data in a cache system comprising a first cache, a second cache, and a storage system. A determination is made of tracks stored in the storage system to demote from the first cache. A first stride is formed including the determined tracks to demote. A determination is made of a second stride in the second cache in which to include the tracks in the first stride. The tracks from the first stride are added to the second stride in the second cache. A determination is made of tracks in strides in the second cache to demote from the second cache. The determined tracks to demote from the second cache are demoted.

7. 发明授权

US08954668B2 Writing of data of a first block size in a raid array that stores and mirrors data in a second block size 有权
标题翻译：在RAID阵列中写入第一个块大小的数据，该阵列数组以第二个块大小存储和镜像数据
公开(公告)号：US08954668B2
公开(公告)日：2015-02-10
申请号：US13113562
申请日：2011-05-23
申请人： Michael T. Benhase , Akihiro Nose , Masaru Sugiura
发明人： Michael T. Benhase , Akihiro Nose , Masaru Sugiura
IPC分类号： G06F12/00 , G06F11/10
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 in 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.
摘要翻译：接收要写入的数据，其中数据以第一块大小的一个或多个块指示。第一块大小的一个或多个块中的每一个被写入尺寸大于第一块大小的第二块大小的连续块中，其中第二块大小的每个连续块只存储一个块第一块大小，并且其中在写入第一块大小的一个或多个块中的每一个之后，其中第二块大小的每个连续块具有剩余的空间。填充数据被写入剩余在第二块大小的每个连续块中的空白空间中。

8. 发明授权

US08935479B2 Adaptive cache promotions in a two level caching system 有权
标题翻译：二级缓存系统中的自适应缓存升级
公开(公告)号：US08935479B2
公开(公告)日：2015-01-13
申请号：US13466861
申请日：2012-05-08
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.
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，该页被添加到第一高速缓存中的LRU列表的最近使用（LRU）端。

9. 发明授权

US08880835B2 Adjusting location of tiered storage residence based on usage patterns 有权
标题翻译：根据使用模式调整分层存储住宅的位置
公开(公告)号：US08880835B2
公开(公告)日：2014-11-04
申请号：US12498424
申请日：2009-07-07
申请人： Michael T. Benhase , Andrew D. Walls
发明人： Michael T. Benhase , Andrew D. Walls
IPC分类号： G06F12/16 , G06F11/34 , G06F3/06
CPC分类号： G06F11/3485 , G06F3/061 , G06F3/0649 , G06F3/0688 , G06F2201/88
摘要： Mechanisms for managing data segments in a tiered storage system are provided. The mechanisms maintain at least one counter for each data segment in the tiered storage system. Each counter in the at least one counter counts a number of access operations to a corresponding data segment for a predetermined time interval. The mechanisms further perform one or more analytical operations based on one or more values of the at least one counter for each data segment to make residence determinations for each data segment. The mechanisms also adjust a storage location of one or more data segments in tiers of the tiered storage system to thereby move the one or more data segments to appropriate tiers of the tiered storage system based on results of the one or more analytical operations.
摘要翻译：提供了在分层存储系统中管理数据段的机制。这些机制为分层存储系统中的每个数据段维护至少一个计数器。所述至少一个计数器中的每个计数器对预定时间间隔对相应的数据段进行多次访问操作。所述机构还基于每个数据段的所述至少一个计数器的一个或多个值进行一个或多个分析操作，以对每个数据段进行居住确定。这些机制还调整分层存储系统的层中的一个或多个数据段的存储位置，从而基于一个或多个分析操作的结果将一个或多个数据段移动到分层存储系统的适当层。

10. 发明授权

US08825956B2 Demoting tracks from a first cache to a second cache by using a stride number ordering of strides in the second cache to consolidate strides in the second cache 有权
标题翻译：通过使用第二高速缓存中的步幅数量排序来将跟踪从第一高速缓存降级到第二高速缓存以整合第二高速缓存中的步幅
公开(公告)号：US08825956B2
公开(公告)日：2014-09-02
申请号：US13779412
申请日：2013-02-27
申请人： Michael T. Benhase , Lokesh M. Gupta
发明人： Michael T. Benhase , Lokesh M. Gupta
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
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.
摘要翻译：在第二高速缓存中配置的步幅信息包括指示步幅中的有效轨迹的数量的信息，其中步幅具有不包括有效数据的有效轨迹和空闲轨迹中的至少一个。确定从第一缓存降级的轨道。形成第一步，包括确定的轨道降级。来自第一步的轨道被添加到没有有效轨道的第二高速缓存中的第二步。基于最近用于将从至少两个步幅的步幅整合到一个步幅中的步幅来选择第二高速缓存中的目标步幅。来自有效轨迹的数据从第二缓存中的至少两个源步骤复制到目标步幅。

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