home *** CD-ROM | disk | FTP | other *** search
- DOCUMENT:Q101473 12-NOV-1993 [W_NT]
- TITLE :INF: Replication Overview in the Windows NT Operating System
- PRODUCT :Windows NT
- PROD/VER:3.10
- OPER/SYS:WINDOWS
- KEYWORDS:
-
- ----------------------------------------------------------------------
- The information in this article applies to:
-
- - Microsoft Windows NT operating system version 3.1
- - Microsoft Windows NT Advanced Server version 3.1
- ----------------------------------------------------------------------
-
- SUMMARY
- =======
-
- Windows NT supports replication to maintain specific, identical sets
- of files and directories on different computers. Changes to
- information on one computer is automatically replicated to other
- computers configured to receive those changes. One common use for
- replication maintains identical login scripts for all servers that
- process login requests in a domain. It can also be used to replicate
- changes to other files, such as database files that are updated
- regularly and must be duplicated exactly on other servers to maintain
- a copy of the database.
-
- MORE INFORMATION
- ================
-
- To support replication, Windows NT requires an export server and an
- import server. The export server must maintain the master copy of the
- files and directories to replicate in an export directory (by default,
- C:\WINNT\SYSTEM32\REPL\EXPORT). An export server can replicate
- directory trees that contain as many as 32 subdirectories. After
- configuring a server to replicate files, the EXPORT directory on the
- export server is automatically shared with two share names, as
- follows:
-
- - NETLOGON as the logon server share that allows the Everyone account
- access with Full Control permission.
-
- - Repl$ as a hidden administrative share that allows the
- Administrators local group access with Full Control permission and
- the Replicator local group account access with Read permission.
-
- Import servers can be computers with Windows NT Advanced Server,
- Windows NT, or OS/2 LAN Manager 2.x servers. Import servers receive
- the master copy of the files and directories from the export directory
- on the export server and place them into an import directory (by
- default, C:\WINNT\SYSTEM32\REPL\IMPORT). After configuring the system
- for replication, the IMPORT directory on each import server is
- automatically shared as the IMPORT share that allows the Everyone
- account access with Full Control permissions.
-
- Replication goes from the export server to the import server(s), not
- the other direction, unless an Advanced Server has been configured as
- both an export and an import server. (A Windows NT workstation cannot
- be configured as an export server.) At regular intervals, the import
- server establishes a session by logging onto the export server. If the
- export server contains files or directories that have been modified
- since the last update, these files are replicated to the import
- server. If any files or directories have been deleted from the import
- server or if new files have been created on the export server, the
- export server replicates the files and directories not present and
- resynchronizes the import directory.
-
- Replication can occur between specific computers or between domains.
- If you activate replication on the import server without specifying
- the name of a computer or of a domain, the import server automatically
- replicates files from the export server in its domain. An export
- server can also export files to a specified domain. Any computer
- configured for import replication in the domain receives any changes
- to files and directories. You can also configure replication to occur
- between machines if a trust relationship exists between their domains.
-
- Additional Information:
-
- See article Q104204 in the Microsoft Knowledge Base for more information.
-
- Additional reference words: 3.10
-
- =============================================================================
-
- THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
- PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
- ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
- EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
- ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
- CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
- MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
- POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
- OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
- SO THE FOREGOING LIMITATION MAY NOT APPLY.
-
- Copyright Microsoft Corporation 1993.