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11. 发明授权

US06904547B2 Method and apparatus for facilitating validation of data retrieved from disk 有权
标题翻译：便于验证从磁盘检索的数据的方法和装置
公开(公告)号：US06904547B2
公开(公告)日：2005-06-07
申请号：US10039417
申请日：2002-01-04
申请人： Robert S. Gittins , Richard S. Brown
发明人： Robert S. Gittins , Richard S. Brown
IPC分类号： G06F11/00 , G11B20/18 , H04L1/22
CPC分类号： G11B20/18
摘要： One embodiment of the present invention provides a system that facilitates validation of data retrieved from a secondary storage device. The system operates by receiving a write request to write new data to a block of the secondary storage device, and calculating a new checksum value from the new data. The system also retrieves a current checksum value and an old checksum value associated with the block of the secondary storage device. Next, the system performs a checksum write operation to a validation device to update the current checksum value and the old checksum value, and then performs a data write operation to the secondary storage device to write the new data to the block of the secondary storage device.
摘要翻译：本发明的一个实施例提供一种有助于验证从辅助存储设备检索的数据的系统。该系统通过接收写入请求来将新数据写入辅助存储设备的块，并从新数据计算新的校验和值。系统还检索与辅助存储设备的块相关联的当前校验和值和旧校验和值。接下来，系统对验证装置执行校验和写入操作，以更新当前校验和值和旧校验和值，然后对辅助存储设备执行数据写入操作，以将新数据写入辅助存储设备的块。

12. 发明授权

US06349359B1 Method and apparatus for maintaining data consistency in raid 有权
标题翻译：保持数据一致性的方法和装置
公开(公告)号：US06349359B1
公开(公告)日：2002-02-19
申请号：US09220988
申请日：1998-12-23
申请人： Robert S. Gittins , Dale R. Passmore
发明人： Robert S. Gittins , Dale R. Passmore
IPC分类号： G06F1200
CPC分类号： G06F11/1076
摘要： A method and apparatus for storing associated data in a computing system having two or more storage devices arranged in a RAID configuration. The storage devices have a prewrite area for pre-storage of the data, and data region for persistent storage of the data. A scoreboard memory structure is created for monitoring the state of the prewrite area, and data in the prewrite area is conditionally invalidated based upon the information contained in the scoreboard memory structure. By conditionally invalidating the prewrite data, the write performance of the RAID storage system is improved.
摘要翻译：一种用于在具有以RAID配置布置的两个或多个存储设备的计算系统中存储关联数据的方法和装置。存储设备具有用于预存储数据的预写区域和用于数据的持久存储的数据区域。创建记分板存储器结构，用于监视预写区域的状态，并且基于包含在记分板存储器结构中的信息有条件地使预写区域中的数据无效。通过有条件地使预写数据无效，RAID存储系统的写入性能得到改善。

13. 发明授权

US5802364A Metadevice driver rename/exchange technique for a computer system incorporating a plurality of independent device drivers 失效
标题翻译：用于包含多个独立设备驱动程序的计算机系统的Metadevice驱动程序重命名/交换技术
公开(公告)号：US5802364A
公开(公告)日：1998-09-01
申请号：US632006
申请日：1996-04-15
申请人： Steven T. Senator , Dale R. Passmore , Robert S. Gittins
发明人： Steven T. Senator , Dale R. Passmore , Robert S. Gittins
IPC分类号： G06F13/10 , G06F3/06 , G06F9/44 , G06F9/445 , G06F9/46 , G06F11/14 , G06F15/163 , G06F9/00
CPC分类号： G06F3/0601 , G06F11/14 , G06F8/71 , G06F9/4411 , G06F9/52 , G06F2003/0697
摘要： A metadisk driver functionally intermediate a computer operating system and one or more metadrivers and underlying layered drivers provides a driver rename/exchange function which does not depend on any particular driver having knowledge of the private data structures of any of the other drivers. The rename/exchange technique implemented thereby may be conducted while the underlying devices are on-line and comprise atomic operations which are, therefore, recoverable inasmuch as the operation will have either been completed or will not be committed in the event of any interruption.
摘要翻译：功能上位于计算机操作系统和一个或多个元定位器和下层分层驱动器之间的元区驱动器提供驱动器重命名/交换功能，其不依赖于具有任何其他驱动器的私有数据结构知识的任何特定驱动器。由此实现的重命名/交换技术可以在底层设备在线并且包括原子操作的同时进行，因此原子操作因此可以被恢复，因为操作将已经完成或者在任何中断的情况下将不会被提交。

14. 发明授权

US5604490A Method and system for providing a user access to multiple secured subsystems 失效
标题翻译：提供用户访问多个安全子系统的方法和系统
公开(公告)号：US5604490A
公开(公告)日：1997-02-18
申请号：US304325
申请日：1994-09-09
申请人： George R. Blakley, III , L. Brooks Hickerson , Ivan M. Milman , Robert S. Gittins , Douglas B. Scheer , John H. Wilson
发明人： George R. Blakley, III , L. Brooks Hickerson , Ivan M. Milman , Robert S. Gittins , Douglas B. Scheer , John H. Wilson
IPC分类号： G06F21/00 , G06F12/14
CPC分类号： G06F21/41 , G06F21/6236
摘要： An improvement relating to the security of an operating system for either a stand alone computer system or for a networked computer system. The operating system provides improved security for programs available on the computer system having different security protocols. The operating system unifies these security protocols for each user based on unique user credentials. The system operates, upon request to start a program procedure by the user, to authenticate the identity of the user based on information unique to that user. Following which, the system generates a user handle associated with the user. The system then notifies each of the security protocols of the user handle associated with the user. The system then generates new user credentials for each of the security protocols. These user credentials are associated with the user handle and then the user handle is mapped to the unique user's credentials for each program procedure. Once this is accomplished, the system invokes an alternate process and tags the process with the user handle. Once a request from the alternate process for access to an object accessed through the server is requested, the system then grants access to the object based on the new user credentials associated with the user handle. The new user credentials are typically based on an association of the user identifier, the user handle, and the unique user credentials from before.
摘要翻译：关于独立计算机系统或联网计算机系统的操作系统的安全性的改进。操作系统为具有不同安全协议的计算机系统上可用的程序提供改进的安全性。操作系统基于唯一的用户凭据统一了每个用户的这些安全协议。根据用户启动程序程序的要求，系统根据该用户唯一的信息对用户的身份进行认证。之后，系统生成与用户相关联的用户句柄。系统然后通知与用户相关联的用户句柄的每个安全协议。然后，系统为每个安全协议生成新的用户凭据。这些用户凭据与用户句柄相关联，然后将用户句柄映射到每个程序过程的唯一用户凭据。一旦完成，系统将调用一个替代过程，并使用用户句柄标记该过程。一旦请求来自替代进程的访问通过服务器访问的对象被请求，则系统基于与用户句柄相关联的新的用户凭证来授予对对象的访问。新的用户凭证通常基于用户标识符，用户句柄和来自之前的唯一用户凭证的关联。

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