Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Restore the System

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/adminGd/cucm_b_administration-guide-15/cucm_m_restore-the-system.html

Published

2026-08-31

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

Cisco copyright; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• A DRS backup taken before an upgrade cannot be restored onto the cluster after it has switched to the new version; restoring it needs a node on the exact pre-upgrade version. inferred in context
• After a restore, replication should be checked on every node with utils dbreplication runtimestate; the Replication Status value should be 2 on each node. in context
• A restore can take a few hours depending on database size and the components chosen, and replication after the subsequent nodes restart may take several hours depending on cluster size. in context
• A DRS restore requires the target server's IP address, hostname, DNS configuration and deployment type to match those stored in the backup file. in context
• If the cluster security password has changed since the backup was taken, the restore fails unless the old password is available. in context
• In a DRS restore the publisher (first node) is restored before the subscriber nodes, and the first node must be restarted before the subsequent nodes. in context
• A DRS restore requires the version saved in the backup file to match the version running on the cluster nodes, including the full version string with service updates. in context
• If the cluster security password has changed since the backup was taken, the restore fails unless you have a record of the old password. in context
• A DRS restore also requires the server's IP address, hostname, DNS configuration and deployment type to match those stored in the backup file. in context
• A DRS restore must run on the same product version as the backup, so a backup cannot be restored across versions. in context
• CUCM DRS does not restore across different hostnames, IP addresses, DNS configurations or deployment types, and cannot migrate data between platforms. in context
• CUCM Disaster Recovery System restores only to the same software version as the backup, and all cluster nodes must run that version. in context

Cite this source record

APA

WarmTransfer. (2026, August 31). Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Restore the System. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-cucm-admin-15-restore-system

BibTeX

@misc{warmtransfer-cisco-cucm-admin-15-restore-system,
  title  = {Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Restore the System},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-cucm-admin-15-restore-system},
  note   = {Cisco Systems, accessed 2026-09-24}
}