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1. 发明授权

US09459809B1 Optimizing data location in data storage arrays 有权
标题翻译：优化数据存储阵列中的数据位置
公开(公告)号：US09459809B1
公开(公告)日：2016-10-04
申请号：US14319566
申请日：2014-06-30
申请人： EMC Corporation
发明人： Xiangping Chen , Miles A. de Forest , Dennis T. Duprey , Karl M. Owen , Jean-Pierre Bono , Walter A. O'Brien, III
IPC分类号： G06F11/00 , G06F3/06 , G06F11/14
CPC分类号： G06F3/0644 , G06F3/061 , G06F3/0617 , G06F3/0649 , G06F3/065 , G06F3/067 , G06F3/0683 , G06F3/0685 , G06F11/1469
摘要： A technique is used for optimizing data location in data storage arrays. A primary storage array is associated with a secondary storage array, the primary storage array and secondary storage array including auto-tiering functionality, where the secondary storage array is configured as a backup storage array for the primary storage array. Tiering metadata is derived for a storage object stored on the primary storage array. The tiering metadata is transmitted to the secondary storage array. Auto-tiering is initiated at the secondary storage array, where the received tiering metadata is provided as input to the secondary storage array's auto-tiering function when auto-tiering replicated storage object associated with the tiering metadata.
摘要翻译：一种技术用于优化数据存储阵列中的数据位置。主存储阵列与辅助存储阵列相关联，主存储阵列和辅助存储阵列包括自动分层功能，其中辅助存储阵列被配置为主存储阵列的备份存储阵列。为存储在主存储阵列上的存储对象导出分层元数据。分层元数据被发送到辅助存储阵列。在辅助存储阵列中启动自动分层，其中当与分层元数据相关联的自动分层复制存储对象时，将接收到的分层元数据作为辅助存储阵列自动分层功能的输入提供。

2. 发明授权

US09286226B1 Storage processor hardware upgrade in a storage system 有权
标题翻译：存储系统中的存储处理器硬件升级
公开(公告)号：US09286226B1
公开(公告)日：2016-03-15
申请号：US14230644
申请日：2014-03-31
申请人： EMC Corporation
发明人： Walter A. O'Brien, III , David W. Harvey , Jeffrey A. Brown , Henry Austin Spang, IV
IPC分类号： G06F12/00 , G06F12/08
CPC分类号： G06F12/0866 , G06F3/06 , G06F11/20 , G06F11/2069 , G06F12/0806 , G06F2212/286
摘要： A method for upgrading storage processors in a storage system includes a first storage processor performing IO requests on a first one or more logical units, and a second storage processor performing IO requests on a second one or more logical units of the plurality of logical units. The method includes causing the first storage processor to stop performing the IO requests on the first one or more logical units and the second storage processor to perform the IO requests on the first one or more logical units. The method includes causing the second storage processor to stop performing the IO requests on the first one or more logical units of the plurality of logical units and a third storage processor to perform the IO requests on the first one or more logical units.
摘要翻译：用于升级存储系统中的存储处理器的方法包括：第一存储处理器，其在第一个或多个逻辑单元上执行IO请求;以及第二存储处理器，在所述多个逻辑单元的第二个一个或多个逻辑单元上执行IO请求。该方法包括使第一存储处理器停止对第一个或多个逻辑单元执行IO请求，而第二存储处理器在第一个或多个逻辑单元上执行IO请求。该方法包括使得第二存储处理器停止在多个逻辑单元的第一个或多个逻辑单元上执行IO请求，以及第三存储处理器来对第一个或多个逻辑单元执行IO请求。

3. 发明授权

US09280427B1 Storage system performance recovery after storage processor failure 有权
标题翻译：存储处理器故障后存储系统性能恢复
公开(公告)号：US09280427B1
公开(公告)日：2016-03-08
申请号：US14230596
申请日：2014-03-31
申请人： EMC Corporation
发明人： Walter A. O'Brien, III , Steven D. Sardella
IPC分类号： G06F11/00 , G06F11/16 , G06F11/20
CPC分类号： G06F11/1666 , G06F11/201 , G06F11/2058 , G06F11/2069 , G06F11/2092
摘要： A method performed by a storage system includes a first storage processor performing input/output (IO) requests on a first one or more logical units, and a second storage processor performing IO requests on a second one or more logical units. If the first storage processor fails, the third storage processor performs the IO requests on the first one or more logical units. If the second storage processor fails, the fourth storage processor performing the IO requests on the second one or more logical units.
摘要翻译：由存储系统执行的方法包括在第一个或多个逻辑单元上执行输入/输出（IO）请求的第一存储处理器，以及在第二个一个或多个逻辑单元上执行IO请求的第二存储处理器。如果第一存储处理器失败，则第三存储处理器在第一个或多个逻辑单元上执行IO请求。如果第二存储处理器发生故障，则第四存储处理器在第二个一个或多个逻辑单元上执行IO请求。

4. 发明授权

US10891057B1 Optimizing flash device write operations 有权
公开(公告)号：US10891057B1
公开(公告)日：2021-01-12
申请号：US14986616
申请日：2015-12-31
申请人： EMC Corporation
发明人： Walter A. O'Brien, III , Steven A. Morley
IPC分类号： G06F12/00 , G06F3/06
摘要： There is disclosed a technique for use in optimizing write operations for flash devices. A system having a plurality of flash based solid state drives receives a write request to overwrite existing data stored on the solid state drives with new data. The write request data is formatted using a write granularity having a first size and the solid state drives are configured with a write granularity having a second size. Corresponding existing data is retrieved. The new data and the existing data are subdivided into multiple corresponding subunits where each subunit has a size equal to the second size. Each new data subunit is compared with each corresponding existing data subunit to identify which new data subunits include modified data. The new data subunits identified as having modified data are written to corresponding locations on the solid state drives.

5. 发明授权

US09037795B1 Managing data storage by provisioning cache as a virtual device 有权
标题翻译：通过将缓存配置为虚拟设备来管理数据存储
公开(公告)号：US09037795B1
公开(公告)日：2015-05-19
申请号：US14085195
申请日：2013-11-20
申请人： EMC Corporation
发明人： Thomas E. Linnell , Walter A. O'Brien, III
IPC分类号： G06F11/20 , G06F12/08 , G06F11/10
CPC分类号： G06F12/0866 , G06F11/1088 , G06F11/2082
摘要： There is disclosed herein techniques for use in managing data storage in a data storage system comprising a cache and data storage devices. In one embodiment, the technique comprises setting a hot spare capacity value for a virtual hot spare device in a data storage system. The technique also comprises detecting the state of data storage devices in a RAID configuration in the data storage system. The technique further comprises determining if a cache in the data storage system has free capacity corresponding to the hot spare capacity value in response to detecting a failure state in connection with at least one of the data storage devices in the RAID configuration. The technique still further comprises provisioning at least a portion of the cache as the virtual hot spare device with a capacity corresponding to the hot spare capacity value in response to determining the cache has free capacity corresponding to the hot spare capacity value.
摘要翻译：这里公开了用于管理包括高速缓存和数据存储设备的数据存储系统中的数据存储的技术。在一个实施例中，该技术包括在数据存储系统中设置虚拟热备用设备的热备用容量值。该技术还包括检测数据存储系统中的RAID配置中的数据存储设备的状态。该技术还包括响应于检测到与RAID配置中的至少一个数据存储设备相关联的故障状态，确定数据存储系统中的高速缓存是否具有与热备用容量值相对应的空闲容量。该技术还包括响应于确定高速缓存具有对应于热备用容量值的空闲容量，将具有对应于热备用容量值的容量的高速缓存的至少一部分配置为虚拟热备用设备。

6. 发明授权

US11061814B1 Managing data storage caching and tiering 有权
公开(公告)号：US11061814B1
公开(公告)日：2021-07-13
申请号：US14039463
申请日：2013-09-27
申请人： EMC Corporation
发明人： Walter A. O'Brien, III , Thomas E. Linnell
IPC分类号： G06F12/02 , G06F3/06
摘要： There is disclosed a technique for use in managing data storage in a data storage system. A first metric indicative of a specified wear rate for a flash drive is determined where the flash drive has a first portion allocated as logical space and a second portion allocated as over-provisioning space. An allocation ratio indicative of the ratio between the first portion and the second portion is determined. The allocation ration is dynamically adjusted to cause the current wear rate to change.

7. 发明授权

US10222984B1 Managing multi-granularity flash translation layers in solid state drives 有权
公开(公告)号：US10222984B1
公开(公告)日：2019-03-05
申请号：US14986615
申请日：2015-12-31
申请人： EMC Corporation
发明人： Walter A. O'Brien, III , Robert W. Beauchamp
IPC分类号： G06F3/06 , G06F12/02 , G06F12/10
摘要： There is disclosed a technique for use in managing multi-granularity flash translation layers in solid state drives. An SSD comprising a flash translation layer (FTL) table and flash memory space is provided. The FTL table is reconfigured into a plurality of multiple sub-tables, where a first sub-table has a first logical page size and a second sub-table has a second logical page size, the first logical page size being smaller than the second logical page size. The flash memory space is reconfigured into multiple flash memory sub-spaces. The first sub-table is mapped to the first flash memory sub-space the second sub-table is mapped to the second flash memory sub-space.

8. 发明授权

US09996273B1 Storage system with data durability signaling for directly-addressable storage devices 有权
公开(公告)号：US09996273B1
公开(公告)日：2018-06-12
申请号：US15198404
申请日：2016-06-30
申请人： EMC Corporation
发明人： Steven Sardella , Walter A. O'Brien, III
IPC分类号： G06F3/06 , G06F13/24
CPC分类号： G06F3/061 , G06F3/065 , G06F3/0659 , G06F3/0688 , G06F13/24
摘要： A storage system in one embodiment comprises at least one processor, a processor memory, an input-output controller, and a directly-addressable storage device having volatile memory and non-volatile memory. The input-output controller generates a plurality of write commands in conjunction with storage of data in the storage system, the write commands including at least a first write command comprising the data and a second write command comprising one or more interrupts. If an address of a given one of the write commands falls within a specified interrupt group window, the write command is copied to the directly-addressable storage device so as to provide at least one of the one or more interrupts to that storage device. The directly-addressable storage device responds to receipt of the interrupt by writing data from the volatile memory to the non-volatile memory and generating a corresponding additional interrupt to the processor.

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