Cisco's Collaboration 14 Preferred Architecture uses the Medium Unified CM OVA. It sizes up to 5,000 users/devices at 5 nodes (publisher, 2 TFTP, 1 subscriber pair) and 5,000 to 10,000 at 7 nodes (publisher, 2 TFTP, 2 subscriber pairs).

Checked 2026-09-25

Vendor
Cisco
Product
Unified Communications Manager
Subsystem
cluster sizing
Deployment
on-premises
Region
not restricted
Release range
Collaboration 14 PA
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Unified CM virtualization and sizing: source note cucm-virtualization-sizing-pa14-medium-ova-node-counts. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-virtualization-sizing-pa14-medium-ova-node-counts

BibTeX

@misc{warmtransfer-claim-cucm-virtualization-sizing-pa14-medium-ova-node-counts,
  title  = {Unified CM virtualization and sizing: source note cucm-virtualization-sizing-pa14-medium-ova-node-counts},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-virtualization-sizing-pa14-medium-ova-node-counts},
  note   = {Source note cucm-virtualization-sizing-pa14-medium-ova-node-counts, checked 2026-09-25}
}

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