公开(公告)号：US07793061B1

公开(公告)日：2010-09-07

申请号：US11824577

申请日：2007-06-29

申请人： Uday K. Gupta ,  Charles H. Hopkins ,  Michael B. Evans

发明人： Uday K. Gupta ,  Charles H. Hopkins ,  Michael B. Evans

IPC分类号： G06F12/16

CPC分类号： G06F11/1441

摘要： Described are techniques for managing data in a data storage system. While the data storage system is operating in a first mode, portions of cached write data not yet destaged to a data storage device are copied from the volatile memory cache to a first area in a flash-based memory. In response to a vault operation event, the data storage system operates in a second mode in which all remaining portions of cached write data from the volatile memory cache not currently included in the first area are copied to a second area of the flash-based memory.

摘要翻译： 描述了用于管理数据存储系统中的数据的技术。 当数据存储系统以第一模式运行时，尚未转移到数据存储设备的高速缓存的写入数据的部分从易失性存储器高速缓存复制到基于闪存的存储器中的第一区域。 响应于文件库操作事件，数据存储系统以第二模式操作，其中来自当前未包括在第一区域中的易失性存储器高速缓存的写入数据的所有剩余部分被复制到基于闪存的存储器的第二区域 。

公开(公告)号：US07523231B1

公开(公告)日：2009-04-21

申请号：US11824578

申请日：2007-06-29

申请人： Uday K. Gupta ,  Andreas L. Bauer ,  Stephen J. Todd ,  Douglas A. Wood ,  Mark A. Parenti ,  Joseph T. Frank ,  Thomas Magorka ,  David C. Butchart ,  Brian James Martin ,  Todd R. Brune ,  Matthew T. Brooks ,  Giridhar G. Basava

发明人： Uday K. Gupta ,  Andreas L. Bauer ,  Stephen J. Todd ,  Douglas A. Wood ,  Mark A. Parenti ,  Joseph T. Frank ,  Thomas Magorka ,  David C. Butchart ,  Brian James Martin ,  Todd R. Brune ,  Matthew T. Brooks ,  Giridhar G. Basava

IPC分类号： G06F3/00 ,  G06F7/04

CPC分类号： G06F3/0629 ,  G06F3/0605 ,  G06F3/0649 ,  G06F3/0683 ,  Y10S707/99939

摘要： Described are techniques for processing a data storage configuration request for an application A first user level of a plurality of user levels at which said data storage configuration request is made is determined. One or more rule sets defining mappings between different ones of said plurality of user levels are provided. Each of the different user levels is associated with a different level of abstraction with respect to processing performed in the data storage system for implementing the data storage configuration request. One of the rule sets is selected in accordance with the application, a data service requested in said data storage configuration request, and a user grouping including said plurality of user levels. The data storage configuration request is serviced using rules of the selected rule set.

摘要翻译： 描述了用于处理应用的数据存储配置请求的技术确定进行所述数据存储配置请求的多个用户级的第一用户级别。 提供了一个或多个定义所述多个用户级别中的不同用户级别之间的映射的规则集。 与数据存储系统中执行的用于实现数据存储配置请求的处理相比，不同用户级别中的每一个与不同的抽象级别相关联。 根据应用，所述数据存储配置请求中请求的数据服务和包括所述多个用户级别的用户分组来选择其中一个规则集。 使用所选规则集的规则对数据存储配置请求进行服务。

公开(公告)号：US06938039B1

公开(公告)日：2005-08-30

申请号：US09608469

申请日：2000-06-30

申请人： Paul M. Bober ,  Uresh Vahalia ,  Aju John ,  Jeffrey L. Alexander ,  Uday K. Gupta

发明人： Paul M. Bober ,  Uresh Vahalia ,  Aju John ,  Jeffrey L. Alexander ,  Uday K. Gupta

IPC分类号： G06F17/30

CPC分类号： G06F17/30079 ,  Y10S707/99938 ,  Y10S707/99952

摘要： A file system is migrated from a source file server to a target file server in a data network while permitting clients to have concurrent read/write access to the file system. The target file server issues directory read requests and file read requests to the source file server in accordance with a network file access protocol to transfer the file system from the source file server to the target file server. Concurrent with the transfer of the file system from the source file server to the target file server, the target file server responds to client read/write requests for access to the file system. In a preferred embodiment, the target file server maintains a hierarchy of on-line nodes off-line nodes. The online nodes represent file system objects that have been completely migrated, and the offline nodes representing file system objects that have not been completely migrated. The target file server executes a background process that walks through the hierarchy in order to migrate the objects of the offline nodes. When an object has been completely migrated, the target file server changes the offline node for the object to an online node for the object.

摘要翻译： 文件系统从源文件服务器迁移到数据网络中的目标文件服务器，同时允许客户端对文件系统进行并行读/写访问。 目标文件服务器根据网络文件访问协议向源文件服务器发出目录读取请求和文件读取请求，以将文件系统从源文件服务器传输到目标文件服务器。 同时将文件系统从源文件服务器传输到目标文件服务器，目标文件服务器响应客户端读/写请求访问文件系统。 在优选实施例中，目标文件服务器维护在线节点离线节点的分层。 在线节点表示已经完全迁移的文件系统对象，并且表示尚未完全迁移的文件系统对象的脱机节点。 目标文件服务器执行后台进程，以便遍历层次结构，以便迁移脱机节点的对象。 当对象已被完全迁移时，目标文件服务器将对象的脱机节点更改为对象的联机节点。