Source note · Unified CM virtualization and sizing
A megacluster is a Unified CM cluster with more than 4 pairs of call-processing subscribers. It may have up to 8 pairs, still within 21 server nodes, and customers must engage their Cisco account team, Cisco Advanced Services or a certified partner to deploy one.
Checked 2026-09-25
A megacluster may have up to 8 pairs of call processing subscribers and no more than 21 server nodes.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- cluster sizing
- Deployment
- on-premises
- Region
- not restricted
- Release range
- CSR 14
- Checked
- 2026-09-25
Sources
- Cisco Collaboration Sizing Guide - Collaboration Sizing Guide for CSR 14 — Cisco Systems · tier 2 current vendor documentation · Megacluster section
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM virtualization and sizing: source note cucm-virtualization-sizing-csr14-megacluster. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-virtualization-sizing-csr14-megacluster
BibTeX
@misc{warmtransfer-claim-cucm-virtualization-sizing-csr14-megacluster,
title = {Unified CM virtualization and sizing: source note cucm-virtualization-sizing-csr14-megacluster},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-virtualization-sizing-csr14-megacluster},
note = {Source note cucm-virtualization-sizing-csr14-megacluster, checked 2026-09-25}
}