公开(公告)号：US08966216B1

公开(公告)日：2015-02-24

申请号：US14031130

申请日：2013-09-19

申请人： EMC Corporation

发明人： Marik Marshak ,  Xiaomei Liu ,  Hui Wang ,  Sachin More ,  Adnan Sahin

IPC分类号： G06F12/00 ,  G06F13/00 ,  G06F13/28 ,  G06F3/06

CPC分类号： G06F3/0689 ,  G06F3/061 ,  G06F3/0619 ,  G06F3/0649 ,  G06F3/0665 ,  G06F3/0685 ,  G06F12/0868 ,  G06F2212/1016 ,  G06F2212/281 ,  G06F2212/313

摘要： Described are techniques for configuring data storage. A plurality of devices is selected. It is determined, for each of the plurality of devices, whether data for said each device should be located in a first storage tier or another storage tier. The first storage tier is higher performance storage tier than the other storage tier. For each of the plurality of devices that the determining step determines should be located in the first storage tier, data of said each device is automatically located on a physical storage device of the first storage tier.

摘要翻译： 描述了用于配置数据存储的技术。 选择多个设备。 对于多个设备中的每一个，确定用于所述每个设备的数据是否应当位于第一存储层或另一存储层中。 第一个存储层是比其他存储层更高的性能存储层。 对于确定步骤确定应该位于第一存储层中的多个设备中的每一个，所述每个设备的数据自动位于第一存储层的物理存储设备上。

公开(公告)号：US09317224B1

公开(公告)日：2016-04-19

申请号：US13931453

申请日：2013-06-28

申请人： EMC Corporation

发明人： Dan Aharoni ,  Hui Wang ,  Marik Marshak ,  Amnon Naamad ,  John A. Adams

IPC分类号： G06F3/00 ,  G06F3/06

CPC分类号： G06F3/0689 ,  G06F3/0605 ,  G06F3/0619 ,  G06F3/0649 ,  G06F3/0665 ,  G06F3/0685

摘要： The contributions of a virtual storage unit to the utilization of a data storage system may be quantified. A utilization score may be determined for each virtual storage unit for one or more functional components of the data storage system, for example, a front-end adapter, back-end adapter or interface physical storage unit. A utilization score may be determined for the data storage system as a whole by combining the component utilization scores of the virtual storage unit. Component and/or system utilization scores may be visually presented to a user in a manner that enables the user to assess the relative contributions of the virtual storage units to utilization of the component or overall system, respectively. What-if scenarios may be considered using the utilization scores to determine the consequences of moving one or more virtual storage units from one data storage system to another, and a live migration may result.

摘要翻译： 可以量化虚拟存储单元对数据存储系统的利用的贡献。 可以针对数据存储系统的一个或多个功能部件，例如前端适配器，后端适配器或接口物理存储单元，为每个虚拟存储单元确定使用得分。 可以通过组合虚拟存储单元的组件利用分数来确定整个数据存储系统的使用分数。 组件和/或系统利用分数可以以使得用户能够分别评估虚拟存储单元对组件或整个系统的利用的相对贡献的方式以视觉方式呈现给用户。 可以考虑使用利用率分数来确定将一个或多个虚拟存储单元从一个数据存储系统移动到另一个数据存储系统的后果，并且可能导致实时迁移。

公开(公告)号：US09665288B1

公开(公告)日：2017-05-30

申请号：US14141376

申请日：2013-12-26

申请人： EMC Corporation

发明人： Dan Aharoni ,  Hui Wang ,  Gil Ratsaby ,  Hagay Dagan ,  Amnon Naamad

IPC分类号： G06F12/00 ,  G06F13/00 ,  G06F13/28 ,  G06F3/06 ,  G06F11/34

CPC分类号： G06F3/0604 ,  G06F3/061 ,  G06F3/0649 ,  G06F3/0665 ,  G06F3/0683 ,  G06F3/0685 ,  G06F3/0689 ,  G06F11/30 ,  G06F11/3409 ,  G06F2201/87

摘要： Determining cumulative workload skew is described. Measurements for one or more logical devices are determined. The set of measurements include, for each of N storage tiers, a workload measurement identifying workload directed to the single tier, and a capacity measurement identifying an amount of data stored in the single tier. N points may be determined using the measurements. Each point corresponds to a different storage tier and has a first coordinate identifying a cumulative percentage of data portions stored in the storage tier and all other tiers having a higher performance ranking than the one storage tier, and a second coordinate denoting an aggregated percentage of total workload directed to the foregoing cumulative percentage of data portions. A curve representing a cumulative workload skew may be determined using these N points and a point of origin.

公开(公告)号：US10007434B1

公开(公告)日：2018-06-26

申请号：US15195154

申请日：2016-06-28

申请人： EMC Corporation

发明人： Owen Martin ,  Malak Alshawabkeh ,  Hui Wang ,  Sean Dolan ,  Xiaomei Liu

IPC分类号： G06F3/06 ,  G06F12/02

CPC分类号： G06F3/0605 ,  G06F3/0611 ,  G06F3/0649 ,  G06F3/0683 ,  G06F3/0685 ,  G06F12/023 ,  G06F2212/1041 ,  G06F2212/261

摘要： High performance storage resources are proactively deallocated when a storage group exceeds its service level objective. A load score is calculated for each unit of storage allocated from a high performance physical disk group. A minimum load score is determined that is the lowest load score calculated for the storage units allocated from the high performance disk group to the storage group. When the storage group service level objective is exceeded, a demotion threshold is calculated equal to a product of the minimum load score and a demotion range factor. A demotion set is determined made up of storage units allocated from the high performance disk group having load scores less than or equal to the demotion threshold. Host data stored on the demotion set is migrated to storage from a lower performance disk group, and the high performance units of storage in the demotion set are released for re-allocation.

公开(公告)号：US09507887B1

公开(公告)日：2016-11-29

申请号：US13798225

申请日：2013-03-13

申请人： EMC Corporation

发明人： Hui Wang ,  Marik Marshak ,  Sean C. Dolan ,  Xiaomei Liu

IPC分类号： G06F9/45 ,  G06F17/50

CPC分类号： G06F17/5009 ,  G06F3/0611 ,  G06F3/0647 ,  G06F3/0685

摘要： Described are techniques for performing data storage optimizations. A reserved workload for a first of a plurality of storage tiers is determined. Each of the plurality of storage tiers is characterized by a set of one or more attributes. The first storage tier includes performance characteristics which are any of incomplete, unknown, and unable to be predictively modeled for various workloads. The plurality of storage tiers includes the first tier and a remaining set of additional storage tier(s). Performance is modeled of a first workload distributed among the remaining set of storage tiers. The first workload represents a total workload less the reserved workload. One or more data movements are determined in accordance with the modeling. Each data movement moves a data portion from a first physical device of one of the plurality of storage tiers to a second physical device of another of the plurality of storage tiers.

摘要翻译： 描述了用于执行数据存储优化的技术。 确定多个存储层中的第一个的保留工作量。 多个存储层中的每个存储层的特征在于一组一个或多个属性。 第一个存储层包括性能特征，这些特性是不完整的，未知的，并且无法对各种工作负载进行预测性建模。 多个存储层包括第一层和剩余的一组额外的存储层。 性能是由剩余的存储层集合中分配的第一个工作负载构成的。 第一个工作负载代表了减少预留工作量的总工作量。 根据建模确定一个或多个数据移动。 每个数据移动将数据部分从多个存储层之一的第一物理设备移动到多个存储层中的另一个存储层的第二物理设备。

公开(公告)号：US09383940B1

公开(公告)日：2016-07-05

申请号：US14197618

申请日：2014-03-05

申请人： EMC Corporation

发明人： Stephen Richard Ives ,  John F. Madden, Jr. ,  Michael Dudnik ,  Hagit Brit-Artzi ,  Roii Raz ,  Hui Wang ,  Gabi Hershkovitz ,  Qun Fan ,  Ofer Michael

IPC分类号： G06F3/06

CPC分类号： G06F3/0647 ,  G06F3/0604 ,  G06F3/0617 ,  G06F3/0683 ,  G06F3/0688 ,  G06F2003/0697

摘要： Described are techniques for performing data migration for a source logical volume and a target. The target is configured as storage for another mirror of the source logical volume prior to copying data from the source logical volume to the target, and if the target is configured storage of another logical volume of the data storage system, the configured storage is remapped as storage for another mirror of the source logical volume prior to copying data from the source logical volume to the target. One or more invalid bits are set indicating that the target does not contain a valid copy of data from the source logical volume. Data is copied from the first mirror of the source logical volume to the target. Invalid bits are cleared as data portions of the first mirror of the source logical volume are copied to the target.

摘要翻译： 描述了用于为源逻辑卷和目标执行数据迁移的技术。 在将数据从源逻辑卷复制到目标之前，将目标配置为源逻辑卷的另一个镜像的存储，并且如果目标是数据存储系统的另一个逻辑卷的配置存储，则将配置的存储重新映射为 在将数据从源逻辑卷复制到目标之前，存储源逻辑卷的另一个镜像。 设置一个或多个无效位，指示目标不包含来自源逻辑卷的数据的有效副本。 数据从源逻辑卷的第一个镜像复制到目标。 无效位被清除，因为源逻辑卷的第一个镜像的数据部分被复制到目标。

公开(公告)号：US10049053B1

公开(公告)日：2018-08-14

申请号：US14985518

申请日：2015-12-31

申请人： EMC Corporation

发明人： Malak Alshawabkeh ,  Owen Martin ,  Xiaomei Liu ,  Sean Dolan ,  Hui Wang

IPC分类号： G06F13/00 ,  G06F12/0897 ,  G06F3/06

摘要： An external storage resource pool associated with federated tiered storage is associated with at least one performance tier based on evaluated performance of the external storage resource pool. Performance of the external pool may be evaluated in terms of service level expectations or service level objectives. Workload pattern analysis or performance probability curves may be used to classify the external storage resource pool. Workload distribution may be determined by a margin analysis algorithm that matches workloads and storage resource pool performance characteristics.

公开(公告)号：US09612746B1

公开(公告)日：2017-04-04

申请号：US14751861

申请日：2015-06-26

申请人： EMC Corporation

发明人： Hui Wang ,  Amnon Naamad ,  Xiaomei Liu ,  Owen Martin ,  Sean Dolan ,  Malak Alshawabkeh ,  Alex Veprinsky ,  Adnan Sahin

IPC分类号： G06F3/06

CPC分类号： G06F3/0604 ,  G06F3/0631 ,  G06F3/0683 ,  G06F3/0685

摘要： An efficient linear technique is used to determine allocation of tiered storage resources among data extents based on system performance and SLOs. Efficiency is achieved by first determining a system performance boundary condition via hardware performance modeling under desirable system performance zones. SLOs are then balanced and SLO achievement improved by exchanging workload activities among SG donors and SG receivers while system performance boundary conditions are maintained. Remaining unutilized capacity is the uniformly distributed to further improve SLO achievement.