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Install, Upgrade, and Maintenance Guide for Cisco Unity Connection Release 10.x
Chapter 2 Backing Up and Restoring Cisco Unity Connection Components
About Disaster Recovery System
All the tasks related to Cisco Unified Operating System Administration web interface remain in the
locked state when Disaster Recovery System backup or restore is running. This is because DRS locks
the operating system platform API. All the Command Line Interface (CLI) commands continue to work
except for the CLI based upgrade command since the platform API is locked.
The Disaster Recovery System contains two key components:
• Master Agent (MA)
• Local Agent (LA)
The Master Agent coordinates the backup and restore activities with Local Agents. The system
automatically activates both the Master Agent and the Local Agent on all the servers in the cluster.
Disaster Recovery System backup tasks can be configured from web interface or Command Line
Interface (CLI) but configuring from web interface is more preferable. For information on configuring
backup tasks using CLI, see Command Line Interface Reference Guide for Cisco Unified
Communications Solutions, Release 10.0(1), available at
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/cli_ref/10_0_1/CUCM_BK_CBEED39F_
00_cucm-cli-reference-guide-100/CUCM_BK_CBEED39F_00_cucm-cli-reference-guide-100_chapter
_01001.html#d3668e2997a1635.
Components Supported for DRS Backup
You can take the backup specific Unity Connection components. The components are listed under Select
Features:
• CUC: Other Unity Connection server and platform components.
• CONNECTION_GREETINGS_VOICENAMES: All user greetings and recorded names.
• PLM: Unity Connection server licenses.
• CONNECTION_DATABASE: Unity Connection configuration database.
• CONNECTION_MESSAGES_<MAILBOXSTORENAME>: All messages in the named mailbox
store.
• CONNECTION_HTML_NOTIFICATION: All HTML notification messages.
Note Selecting the CONNECTION_GREETINGS_VOICENAMES or
CONNECTION_HTML_NOTIFICATION component automatically includes the
CONNECTION_DATABASE component.
You should take the backup of all the server components when you are taking the backup for the first
time, changing the backup device, upgrading the Unity Connection server to higher releases, migrating
from physical server to virtual machine, or re-installing the server.
Backup Files in DRS
DRS stores the backup of all the server software components in multiple .tar files based on the
component selected.
The .tar backup file includes an XML file called drfComponent.xml that contains a catalog of all the
component files stored during the backup operation. When DRS performs the next backup operation, it
uses the contents of this catalog to determine: