Руководство Пользователя для Cisco Cisco Content Security Management Appliance M160

During a full initial backup, a backup of 800GB may take up to 10 hours. Daily backups, may take up to 
3 hours each. Weekly and monthly backups may take longer. These numbers may vary. 

After the initial backup, the backup process transfers only files that have changed since the last backup. 
Thus, subsequent backups should take less time than the initial backup. The time required for subsequent 
backups depends on the amount of data accumulated, how many files have changed, and to what extent 
the files have changed since the last backup. 

Backing up a Security Management appliance copies the active data set from the ‘source’ Security 
Management appliance to a ‘target’ Security Management appliance with minimum disruption on the 
originating ‘source’ appliance. 

The phases of the backup process and their effect on the availability of services are as follows:

Appliance 
capacity 

The disk space capacity of the target appliance must be the same as or greater than 
the capacity of the source appliance. Disk space allocated to each type of data 
(reporting, tracking, quarantine, etc.) on the target appliance cannot be less than the 
corresponding allocation on the source appliance. 

You can schedule a backup from a larger source to a smaller target Security 
Management appliance as long as there is enough space on the target appliance for 
all of the data being backed up, for each type of data. If the source appliance is larger 
than the target appliance, you must reduce the space allocated on the source 
appliance to match the space available on the smaller target appliance. 

To view and manage disk space allocations and capacity, see 

For disk capacity of virtual appliances, see the Cisco Content Security Virtual 
Appliance Installation Guide. 

Multiple, 
concurrent, and 
chained backups 

Only one backup process can run at a time; a backup that is scheduled to run before 
a previous backup has been completed will be skipped and a warning sent. 

Data from a Security Management appliance can be backed up to a single Security 
Management appliance. 

Chained backup (a backup to a backup) is not supported.