Cisco Headend System Release 2.5 Guía Del Usuario
4-2
Backing Up and Restoring the DNCS and Application Server
4001155 Rev B
Back Up the DNCS or Application Server File System
Overview
Consider the following points about a backup of the DNCS or Application Server file
system.
Recommended Frequency
Cisco recommends that system operators perform a complete system backup just
Recommended Frequency
Cisco recommends that system operators perform a complete system backup just
prior to upgrading to new system software, as well as after the upgrade.
Backup Script Options
The script that backs up the file system is called backupFileSystems. You can run
Backup Script Options
The script that backs up the file system is called backupFileSystems. You can run
the backupFileSystems script with the following options:
•
•
-l— local-tape-drive. Specifies tape drive to use on local host computer.
(e.g. -- /dev/rmt/0h)
•
-r— remote-tape-drive. Specifies tape drive on a remote host computer.
(e.g. – sparky:/dev/rmt/0h or 192.168.1.10:/dev/rmt/0h)
•
-verbose—Verbose output.
Failure of File System Backups and the ntpd Process
Occasionally, the file system backup of the DNCS or the Application Server may fail.
If the backup fails, system operators should check that the ntpd process is running.
The ntpd process needs to be running for the backup to succeed.
Note: The ntpd process is an operating system daemon that sets and maintains
Note: The ntpd process is an operating system daemon that sets and maintains
system time in synchronization with Internet standard time servers.
If the file system backup fails, system operators should follow this procedure to see
If the file system backup fails, system operators should follow this procedure to see
if the ntpd process is running, and then to start it, if necessary.
1.
From an xterm window on the DNCS or the Application Server (depending
upon which file system backup failed), type ps -ef | grep ntpd and then
press Enter.
Result: The system reports whether the ntpd process is running.
Result: The system reports whether the ntpd process is running.