Q152313: XADM: Using the AT Backup Command with Microsoft Exchange
Article: Q152313
Product(s): Microsoft Exchange
Version(s): winnt:4.0,5.0,5.5
Operating System(s):
Keyword(s): kbusage
Last Modified: 28-MAR-1999
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The information in this article applies to:
- Microsoft Exchange Server, versions 4.0, 5.0, 5.5
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SUMMARY
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You can use the AT command to automate your Online backup procedures. The AT
command requires that the Schedule service is running on the NT Server.
The AT command to run an online backup of the Microsoft Exchange Directory Store
and Information Store is:
AT NTBACKUP BACKUP DS \\servername IS \\servername /B /T NORMAL
-or-
AT <time> Batchfile
MORE INFORMATION
================
The AT command ships with Windows NT and is located by default in the
Winnt\system32 directory. The account that the schedule process is started by
should have the proper access rights to the resources that you are trying to
backup up (see NT System guide, Chapter 15, page 479 for more information). The
AT scheduler requires the administrator logon. The default startup is System
account which will restrict permissions to access network resources such as
printers and shares.
To fully utilize the AT command, modify the Schedule Startup in Control panel,
Services to use "This Account" and use an Administrator equivalent account and
password.
Sample Batch File For On-line Backup:
rem ** 3/7/96 Backup Written by Joseph Pagano
rem ** This will backup the IS and DS on both WNTEXS1 and WNTEXD1.
ntbackup backup DS \\WNTEXS1 IS \\WNTEXS1 /v /d "WNTEXS1 IS-DS" /b /t
Normal /l c:\winnt35\backup.log /e
ntbackup backup DS \\WNTEXD1 IS \\WNTEXD1 /a /v /d "WNTEXS1 IS-DS" /b /t
Normal /l c:\winnt35\backup.log /e
exit
Information on command line parameters is in the Microsoft Exchange
Administration Guide, Chapter 15, page 462 and in the Books Online.
Ntbackup.exe Switch Notes
Note: In a batch file, limit the command line to 256 characters. Exceeding this
limit might result in files not being backed up and might stop the process
without any warning.
The syntax for this command is as follows:
ntbackup operation path [/a][/v][/r][/d"text"][/b][/hc:{on | off}]
[/t{option}][/l"filename"][/e][/tape:{n}]
Parameters:
operation - Specifies the operation, backup.
Path - If you are backing up a drive, specifies one or more paths
of the directories to be backed up. If you are backing up
Microsoft Exchange Server components, specifies the
component and the server using the following format:
{DS server /IS server}
where Server is the name of the server you are backing up
preceded by two backslashes (for example, \\berkeley). DS
indicates that you are backing up the directory, and IS
indicates that you are backing up the information store.
/a - Causes backup sets to be added after the last backup set on
the tape. When /a is not specified, the program reuses the
tape and replaces previous data. When more than one drive
is specified but /a is not, the program overwrites the
contents of the tape with the information from the first
drive selected and then appends the backup sets for the
remaining drives.
/v - Verifies the operation.
/r - Restricts access.
/d "text" - Specifies a description of the backup contents.
/b - Specifies that the local registry be backed up.
/hc:on or - Specifies that hardware compression is on or off.
/hc:off
/t {option} - Specifies the backup type. Option can be one of the
following:
Normal - All selected files or Microsoft Exchange
Server components are backed up and
marked as such on the disk.
Copy - All selected files or Microsoft Exchange
Server components are backed up, but they
are not marked as such on the disk.
Incremental - Among the selected files or Microsoft
Exchange Server components, only those
that have been modified are backed up and
marked as such on the disk.
Differential - The selected files or Microsoft Exchange
Server components that have been modified
are backed up, but they are not marked as
such on the disk.
Daily - Among the selected files, only those that
have been modified that same day are
backed up, but they are not marked as
such on the disk. This can be useful if
you want to take work home and need a
quick way to select the files that you
worked on that day. This option is not
available when backing up Microsoft
Exchange Server components.
/l "filename" - Specifies the filename for the backup log.
/e - Specifies that the backup log include exceptions only.
/tape:{n} - Specifies the tape drive to which the files should be
backed up. N is a number from 0 to 9 that corresponds to
the tape drive number listed in the registry.
Additional query words:
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Keywords : kbusage
Technology : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2
Version : winnt:4.0,5.0,5.5
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