Cisco Headend System Release 2.5 用户指南
Chapter 2 Backup Recommendations
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4013779 Rev C
System Backup Frequency
System operators can ensure the integrity of their data only by adhering to a regular
schedule of database and file system backups. The recommendations in this section
provide some guidance regarding the frequency with which system backups should
occur. Adjust these recommendations, if necessary, according to the size of the
system and the frequency with which the data changes.
Full System Backup
A full system backup refers to a backup of the file systems and the database.
System operators should perform a complete system backup prior to making any
A full system backup refers to a backup of the file systems and the database.
System operators should perform a complete system backup prior to making any
substantial modification to the system.
In addition, system operators should perform a complete system backup just prior to
In addition, system operators should perform a complete system backup just prior to
upgrading to new system software, as well as right after the upgrade. The backup
just prior to the upgrade will be used in case the system must be rolled back to the
previous release in the event that the upgrade is unsuccessful.
Important: Clearly label the backup tapes and remove them from the working area
Important: Clearly label the backup tapes and remove them from the working area
so that they cannot be accidentally restored to the new release. New and old backups
are not compatible.
Informix Database Backup
The Informix database contains all headend configuration information, as well as
The Informix database contains all headend configuration information, as well as
data needed to provision and authorize Digital Home Communication Terminals
(DHCTs). System operators should perform a complete backup of the Informix
database once a day. In addition, system operators should perform a complete
backup of the database immediately before and after a channel lineup change or a
major system configuration change.
Note: Refer to
Note: Refer to
Setting Up an Automated Database Backup (on page 65) for a
procedure that sets up an automatic database backup. You can use this procedure
ONLY if your database backup requires one tape.