公开(公告)号：US08352437B1

公开(公告)日：2013-01-08

申请号：US13234787

申请日：2011-09-16

Applicant: Stanley Luke ,  Nils Wygant ,  Aamir Rashid ,  Ravikanth Dronamraju

Inventor： Stanley Luke ,  Nils Wygant ,  Aamir Rashid ,  Ravikanth Dronamraju

IPC: G06F7/00

CPC classification number: G06F3/0605 ,  G06F3/0632 ,  G06F3/0689

Abstract: Data-storage volumes, such as a file system on a storage system, may utilize a particular operating system format. Converting a data-storage volume to a different format may be desirable at times. However, this can be time consuming and resource intensive if data needs to be copied. Accordingly, substantially copying-free, in-place conversion of a data-storage volume from a first format to a second format is provided herein. In one embodiment, a data-storage volume may be converted from a first format to a second format while the data-storage volume is mounted and/or without copying data within the data-storage volume to a separate data-storage volume. Before conversion, features associated with the first format and the second format may be compared to detect incompatibilities that may result from conversion. During conversion, access to the data-storage volume may be blocked. Upon successful conversion, various post conversion operations may be performed.

Abstract translation: 数据存储卷（例如存储系统上的文件系统）可以利用特定的操作系统格式。 有时可能需要将数据存储卷转换为不同的格式。 但是，如果需要复制数据，这可能会耗费时间和资源。 因此，本文提供了数据存储卷从第一格式到第二格式的基本上无复制的原位转换。 在一个实施例中，数据存储卷可以在数据存储卷被安装和/或不将数据存储卷内的数据复制到单独的数据存储卷的同时从第一格式转换为第二格式。 在转换之前，可以比较与第一格式和第二格式相关联的特征，以检测可能由转换产生的不兼容性。 在转换期间，可能会阻止对数据存储卷的访问。 成功转换后，可以执行各种后转换操作。

公开(公告)号：US07925749B1

公开(公告)日：2011-04-12

申请号：US11739239

申请日：2007-04-24

Applicant: Dong Lin ,  Ravikanth Dronamraju ,  Mark Muhlstein ,  Michael L. Federwisch

Inventor： Dong Lin ,  Ravikanth Dronamraju ,  Mark Muhlstein ,  Michael L. Federwisch

IPC: G06F15/167 ,  G06F12/00

CPC classification number: G06F11/2069 ,  G06F11/1484 ,  G06F17/30079 ,  G06F17/30215

Abstract: A system and method for transparent data replication of one or more data containers over migrating virtual servers (vfilers) operating on physical storage systems is provided. A mirroring (or other replication) procedure associated with a vfiler generates an entry in a mirror table maintained by one or more appropriate mirroring applications executing on the physical storage systems. The mirror table identifies source and destination “owners” of a replicated data container by vfiler instead of only by physical storage system. Thus, when a vfiler is migrated from a source physical storage system (“source”) to a destination physical storage system (“destination”), the mirroring application may continue to perform mirroring operations on the data containers at a per vfiler level to thereby improve the utility of migration of the vfiler among the storage systems.

Abstract translation: 提供了一种用于在运行在物理存储系统上的迁移虚拟服务器（vfilers）上的一个或多个数据容器的透明数据复制的系统和方法。 与vfiler相关联的镜像（或其他复制）过程在由物理存储系统上执行的一个或多个适当镜像应用程序维护的镜像表中生成条目。 镜像表通过vfiler识别复制数据容器的源和目标“所有者”，而不是仅通过物理存储系统。 因此，当vfiler从源物理存储系统（“源”）迁移到目标物理存储系统（“目标”）时，镜像应用程序可以继续在每个vfiler级别对数据容器执行镜像操作，从而 提高存储系统中vfiler的迁移效用。

公开(公告)号：US20130238832A1

公开(公告)日：2013-09-12

申请号：US13413898

申请日：2012-03-07

Applicant: Ravikanth Dronamraju ,  Douglas P. Doucette ,  Rajesh Sundaram

Inventor： Ravikanth Dronamraju ,  Douglas P. Doucette ,  Rajesh Sundaram

IPC: G06F12/00 ,  G06F12/08

CPC classification number: G06F3/0641 ,  G06F3/0608 ,  G06F3/0685 ,  G06F12/0866 ,  G06F2212/217 ,  G06F2212/461

Abstract: Methods and apparatuses for performing deduplication in a hybrid storage aggregate are provided. In one example, a method includes operating a hybrid storage aggregate that includes a plurality of tiers of different types of physical storage media. The method includes identifying a first storage block and a second storage block of the hybrid storage aggregate that contain identical data and identifying caching statuses of the first storage block and the second storage block. The method also includes deduplicating the first storage block and the second storage block based on the caching statuses of the first storage block and the second storage block.

Abstract translation: 提供了用于在混合存储集合中执行重复数据消除的方法和装置。 在一个示例中，方法包括操作包括多个不同类型的物理存储介质的混合存储集合。 该方法包括识别包含相同数据并识别第一存储块和第二存储块的高速缓存状态的混合存储聚合的第一存储块和第二存储块。 该方法还包括基于第一存储块和第二存储块的高速缓存状态对第一存储块和第二存储块进行重复数据删除。

公开(公告)号：US08073816B1

公开(公告)日：2011-12-06

申请号：US12426597

申请日：2009-04-20

Applicant: Stanley Luke ,  Nils Wygant ,  Aamir Rashid ,  Ravikanth Dronamraju

Inventor： Stanley Luke ,  Nils Wygant ,  Aamir Rashid ,  Ravikanth Dronamraju

IPC: G06F7/00

CPC classification number: G06F3/0605 ,  G06F3/0632 ,  G06F3/0689

Abstract: Data storage volumes, such as a file system on a storage system, may utilize a particular operating system format. Converting a volume to a different format may be desirable at times. However, this can be time consuming and resource intensive if data needs to be copied. Accordingly, substantially copying-free, in-place conversion of a data-storage volume from a first format to a second format is provided herein. In one embodiment, it is determined whether the volume can be converted, for example, by comparing compatibility of features between the first and second formats. A desired feature list is retrieved and respective features are checked for compatibility. Access to the volume is blocked during the conversion, and the volume is converted if the features are found to be compatible. If the conversion is successful, post conversion operations are performed, including unblocking the volume and notifying clients that the volume is available for access.

Abstract translation: 诸如存储系统上的文件系统的数据存储卷可以利用特定的操作系统格式。 有时可能需要将卷转换成不同的格式。 但是，如果需要复制数据，这可能会耗费时间和资源。 因此，本文提供了数据存储卷从第一格式到第二格式的基本上无复制的原位转换。 在一个实施例中，例如通过比较第一格式和第二格式之间的特征的兼容性来确定是否可以转换该卷。 检索所需的特征列表并检查相应的特征以获得兼容性。 在转换过程中阻止对卷的访问，如果发现功能兼容，则会转换卷。 如果转换成功，则执行后转换操作，包括解除卷并通知客户端卷可用于访问。

公开(公告)号：US08751725B1

公开(公告)日：2014-06-10

申请号：US13359991

申请日：2012-01-27

Applicant: SushilKumar Gangadharan ,  Mark Smith ,  Ravikanth Dronamraju

Inventor： SushilKumar Gangadharan ,  Mark Smith ,  Ravikanth Dronamraju

IPC: G06F12/00

CPC classification number: G06F12/0638 ,  G06F3/061 ,  G06F3/0656 ,  G06F3/068

Abstract: Among other things, one or more techniques and/or systems are provided for storing data within a hybrid storage aggregate comprising a solid state storage tier and a non-solid state storage tier. In particular, frequently accessed data and/or randomly accessed data may be identified and stored within the solid state storage tier to mitigate mechanical latency that may arise from accessing such data from the non-solid state storage tier. Infrequently accessed data and/or sequentially accessed data may be identified and stored within the non-solid state storage tier to utilize cost effective storage space while mitigating undesirable mechanical latency associated with accessing such data.

Abstract translation: 除其他之外，提供了一种或多种技术和/或系统用于在包括固态存储层和非固态存储层的混合存储聚合体内存储数据。 特别地，经常访问的数据和/或随机访问的数据可被识别并存储在固态存储层内，以减轻从非固态存储层访问这些数据可能产生的机械等待时间。 不经常访问的数据和/或顺序访问的数据可以被识别并存储在非固态存储层中，以利用成本有效的存储空间，同时减轻与访问这样的数据相关联的不期望的机械延迟。

公开(公告)号：US20130238851A1

公开(公告)日：2013-09-12

申请号：US13413877

申请日：2012-03-07

Applicant: Koling Chang ,  Rajesh Sundaram ,  Douglas P. Doucette ,  Ravikanth Dronamraju

Inventor： Koling Chang ,  Rajesh Sundaram ,  Douglas P. Doucette ,  Ravikanth Dronamraju

IPC: G06F12/08

CPC classification number: G06F12/0871 ,  G06F3/061 ,  G06F3/0647 ,  G06F3/0656 ,  G06F3/0685 ,  G06F12/0895

Abstract: Methods and apparatuses for operating a hybrid storage aggregate are provided. In one example, such a method includes operating a first tier of physical storage of the hybrid storage aggregate as a cache for a second tier of physical storage of the hybrid storage aggregate. The first tier of physical storage includes a plurality of assigned blocks. The method also includes updating metadata of the assigned blocks in response to an event associated with at least one of the assigned blocks. The metadata includes block usage information tracking more than two possible usage states per assigned block. The method can further include processing the metadata to determine a caching characteristic of the assigned blocks.

Abstract translation: 提供了用于操作混合存储集合体的方法和装置。 在一个示例中，这种方法包括操作混合存储聚合体的第一层物理存储作为混合存储聚合体的第二物理存储层的缓存。 第一层物理存储包括多个分配块。 该方法还包括响应于与所分配的块中的至少一个相关联的事件来更新所分配的块的元数据。 元数据包括跟踪每个分配块的两个以上可能使用状态的块使用信息。 该方法还可以包括处理元数据以确定所分配块的高速缓存特性。

公开(公告)号：US08452856B1

公开(公告)日：2013-05-28

申请号：US12850486

申请日：2010-08-04

Applicant: Arthur F. Lent ,  Nagender Somavarapu ,  Mohammed Nazeem ,  Aditya Rajeev Kulkarni ,  Ravikanth Dronamraju

Inventor： Arthur F. Lent ,  Nagender Somavarapu ,  Mohammed Nazeem ,  Aditya Rajeev Kulkarni ,  Ravikanth Dronamraju

IPC: G06F15/16 ,  G06F15/177

CPC classification number: H04L67/42 ,  G06F3/0617 ,  G06F3/0647 ,  G06F3/067

Abstract: The techniques introduced here provide a storage server migration that is non-disruptive to client applications. The techniques described here allow the migration of data from a source storage server to a destination storage server without the need for planned downtime typically associated with storage server migration. Using the techniques described here, data migration operations are performed while client applications continue to run and access data from the source storage server. Once data migration operations are complete, all applications and clients are transitioned to the destination storage server without disruption to the client applications.

Abstract translation: 这里介绍的技术提供了一种不会破坏客户端应用程序的存储服务器迁移。 这里描述的技术允许将数据从源存储服务器迁移到目标存储服务器，而不需要通常与存储服务器迁移相关联的计划停机时间。 使用这里描述的技术，在客户端应用程序继续运行并从源存储服务器访问数据时执行数据迁移操作。 一旦数据迁移操作完成，所有应用程序和客户端都将转换到目标存储服务器，而不会中断客户端应用程序。

公开(公告)号：US08429081B1

公开(公告)日：2013-04-23

申请号：US10777956

申请日：2004-02-12

Applicant: Ravikanth Dronamraju ,  Jamshid Mahdavi

Inventor： Ravikanth Dronamraju ,  Jamshid Mahdavi

IPC: G06F21/00

CPC classification number: G06F21/10

Abstract: Techniques are provided for securely delivering media data. A requestor is directed to a secure streaming portal after being authenticated. A requesting application contacts the secure streaming portal and requests media data. A configuration header having a key for decrypting the media data is sent to the requesting application using secure communications. The media data is dynamically encrypted using the key and streamed to the requesting application. The requesting application uses the key and decrypts the encrypted media data for consumption.

Abstract translation: 提供了安全传送媒体数据的技术。 认证后，请求者被引导到安全流媒体门户。 请求的应用程序联系安全流媒体门户并请求媒体数据。 具有用于解密媒体数据的密钥的配置报头使用安全通信发送到请求应用。 使用密钥动态加密媒体数据，并将其流式传输到请求应用。 请求的应用程序使用密钥并解密加密的媒体数据以进行消费。

公开(公告)号：US08095590B1

公开(公告)日：2012-01-10

申请号：US10899876

申请日：2004-07-27

Applicant: Vernon Roger Holm ,  Ravikanth Dronamraju ,  Jamshid Mahdavi

Inventor： Vernon Roger Holm ,  Ravikanth Dronamraju ,  Jamshid Mahdavi

IPC: G06F15/16

CPC classification number: H04L12/1863 ,  H04L45/24 ,  H04L45/48

Abstract: Techniques are provided for distributing data over a network. One or more source nodes distribute data to an intermediate node. The intermediate node accumulates the data, dynamically selects a first path for distributing the data to a first destination node, and dynamically selects a second path for distributing the data to a second destination node. In an embodiment, the data is simultaneously distributed over the first and second paths from the intermediate node.

Abstract translation: 提供了通过网络分发数据的技术。 一个或多个源节点将数据分发到中间节点。 中间节点累积数据，动态地选择用于将数据分发到第一目的地节点的第一路径，并且动态地选择用于将数据分发到第二目的地节点的第二路径。 在一个实施例中，数据同时从中间节点分布在第一和第二路径上。