Transferring data in a digital data processing system
    1.
    发明授权
    Transferring data in a digital data processing system 失效
    在数字数据处理系统中传输数据

    公开(公告)号:US5247618A

    公开(公告)日:1993-09-21

    申请号:US882765

    申请日:1992-05-11

    IPC分类号: G06F11/14 G06F11/16 G06F11/20

    CPC分类号: G06F11/2071 G06F11/16

    摘要: A method and apparatus for transferring data between two storage media, and is used in an illustrative embodiment to transfer data between two storage media in a shadow set, the storage media being accessible to one or more host processors. The method of the preferred embodiment includes the steps of: A. receiving a command from one of the host processors, the command specifying data to be transferred from a first storage medium to a second storage medium; B. transferring the data specified in the command received from the host from the first storage medium to the second storage medium in a series of subtransfers, each of the subtransfers transferring a portion of the data; and C. processing one or more I/O requests to the shadow set received from one or more host processors by, for each received I/O request: a. implementing the I/O request if the I/O request does not involve a section of the shadow set currently involved in one of the subtransfers; and b. stalling the I/O request if the I/O request involves a section of said shadow set currently involved in one of the subtransfers, and implementing the I/O request when the subtransfer has completed.

    摘要翻译: 一种用于在两个存储介质之间传送数据的方法和装置,并且在说明性实施例中用于在影子集中的两个存储介质之间传送数据,该存储介质可由一个或多个主机处理器访问。 优选实施例的方法包括以下步骤:A.从主处理器之一接收命令,指定要从第一存储介质传送到第二存储介质的数据; 在一系列的子传输中,将从主机接收的命令中指定的数据从第一存储介质传送到第二存储介质,每个子传输传送数据的一部分; 以及C.对于每个接收的I / O请求,通过针对每个所接收的I / O请求,处理对从一个或多个主机处理器接收的影子集的一个或多个I / O请求:a。 如果I / O请求不涉及其中一个子传输中当前涉及的影子集的一部分,则实现I / O请求; 和b。 如果I / O请求涉及当前涉及其中一个子传输的所述影子集的一部分,并且在子传输完成时实现I / O请求,则停止I / O请求。

    Log for selective management of specific address in a shadow storage
system
    3.
    发明授权
    Log for selective management of specific address in a shadow storage system 失效
    日志用于对影子存储系统中的特定地址进行选择性管理

    公开(公告)号:US5546536A

    公开(公告)日:1996-08-13

    申请号:US409905

    申请日:1995-03-23

    摘要: A log for managing data in a shadow set of storage media includes a system for maintaining a log of address information associated with at least one write command received from one of a plurality of data processing devices. The system for maintaining a log of address information includes a device for receiving a write command from a data processing device, a device which writes data associated with the write command in a section of one of the storage media, and a device which writes address information in a log indicative of the location of that section. A device is provided which then implements a management operation on data stored on one of the storage media in accordance with the address information stored in the log.

    摘要翻译: 用于管理存储介质的阴影集合中的数据的日志包括用于维护与从多个数据处理设备之一接收的至少一个写入命令相关联的地址信息的日志的系统。 用于维护地址信息日志的系统包括用于从数据处理设备接收写入命令的设备,将写入命令相关联的数据写入存储介质之一的部分的设备和写入地址信息的设备 在指示该部分的位置的日志中。 提供一种装置,然后根据存储在日志中的地址信息对存储在其中一个存储介质上的数据执行管理操作。

    Transferring data between storage media while maintaining host processor
access for I/O operations
    4.
    发明授权
    Transferring data between storage media while maintaining host processor access for I/O operations 失效
    在存储介质之间传输数据,同时保持主机处理器对I / O操作的访问

    公开(公告)号:US5210865A

    公开(公告)日:1993-05-11

    申请号:US925307

    申请日:1992-08-04

    IPC分类号: G06F11/16 G06F11/20

    摘要: A system and method for transferring data from a first storage medium to a second storage medium, each of the storage media being divided into corresponding data blocks, the method comprising steps of: (a) reading data stored in a first data block in the first storage medium, the first data block initially constituting a current data block; (b) comparing data read in the current data block to data stored in a corresponding data block in the second storage medium; (c) if the data compared in step b are identical, reading data stored in a different data block in the first storage medium, the different data block becoming the current data block, and returning to step b; (d) modifying the data stored in one of the storage media such that the data in the current data block is identical to the corresponding data in the second storage medium; and (e) rereading the data in the current data block and returning to step b.

    摘要翻译: 一种用于将数据从第一存储介质传送到第二存储介质的系统和方法,每个存储介质被分成相应的数据块,所述方法包括以下步骤:(a)读取存储在第一数据块中的第一数据块中的数据 存储介质,所述第一数据块最初构成当前数据块; (b)将当前数据块中读取的数据与存储在第二存储介质中相应数据块中的数据进行比较; (c)如果在步骤b中比较的数据相同,则读取存储在第一存储介质中的不同数据块中的数据,将不同数据块变为当前数据块,并返回到步骤b; (d)修改存储在一个存储介质中的数据,使得当前数据块中的数据与第二存储介质中的对应数据相同; 和(e)重新读取当前数据块中的数据并返回到步骤b。

    Internet-based shared file service with native PC client access and semantics and distributed access control
    6.
    发明授权
    Internet-based shared file service with native PC client access and semantics and distributed access control 有权
    基于Internet的共享文件服务,具有本机PC客户端访问和语义以及分布式访问控制

    公开(公告)号:US07136903B1

    公开(公告)日:2006-11-14

    申请号:US09704050

    申请日:2000-11-01

    CPC分类号: G06F17/30067 G06F17/30861

    摘要: A multi-user file storage service and system enable each user of a pre-subscribed user group to communicate with a remote file server node via a wide area network and to access the files of the file group via the respective client node. More than one user of the pre-subscribed user group is permitted to access the file group at the remote file server node simultaneously. Integrity of the files at the remote file server node are maintained by controlling each access to each file at the remote file server node so that each access to files at the remote file server is performed, if at all, on a respective portion of each file as most recently updated at the remote file server node. Additionally, an encrypted key is transferred from the file server node to a particular client node via a secure channel. The encrypted key uses an encryption function and a decryption function not known locally at the remote file server. Furthermore, both privileged access control rights and file sharing mode access control to a particular file of the group of files are delegated to one or more distributed nodes other than the remote file server node which provides the data.

    摘要翻译: 多用户文件存储服务和系统使得预订用户组的每个用户能够经由广域网与远程文件服务器节点通信,并且经由相应的客户端节点访问文件组的文件。 允许预订用户组的多个用户同时访问远程文件服务器节点上的文件组。 通过控制对远程文件服务器节点上每个文件的访问来维护远程文件服务器节点上的文件的完整性,以便在每个文件的相应部分执行对远程文件服务器上的文件的每次访问 最近在远程文件服务器节点更新。 此外,加密密钥通过安全信道从文件服务器节点传送到特定的客户端节点。 加密密钥使用在远程文件服务器本地不知道的加密功能和解密功能。 此外,对提供数据的远程文件服务器节点以外的一个或多个分布式节点,委托给该组文件的特定文件的特权访问控制权和文件共享模式访问控制。

    Internet-based shared file service with native PC client access and semantics
    10.
    发明授权
    Internet-based shared file service with native PC client access and semantics 有权
    基于Internet的共享文件服务,具有本机PC客户端访问和语义

    公开(公告)号:US07058696B1

    公开(公告)日:2006-06-06

    申请号:US09703884

    申请日:2000-11-01

    IPC分类号: G06F15/16

    CPC分类号: G06F17/30067 G06F17/30861

    摘要: A multi-user file storage service and system enables each user of a user group to operate an arbitrary client node at an arbitrary geographic location to communicate with a remote file server node via a wide area network. More than one user of the user group is permitted to access the file group at the remote file server node simultaneously, but the integrity of the files is maintained by controlling access so that each access to one of the files at the remote file server is performed, if at all, on a respective portion of that file as most recently updated at the remote file server node.

    摘要翻译: 多用户文件存储服务和系统使得用户组的每个用户能够操作任意地理位置处的任意客户端节点,以经由广域网与远程文件服务器节点进行通信。 允许用户组的多个用户同时访问远程文件服务器节点上的文件组,但是通过控制访问来维护文件的完整性,以便执行对远程文件服务器中的一个文件的每次访问 (如果有的话)在远程文件服务器节点上最近更新的文件的相应部分上。