Source note · Planning a Unified CM upgrade
From Release 15SU3, ESXi virtual machines must use a CPU mode that supports AVX. Where VMware EVC is configured, its settings must be checked.
Checked 2026-09-25
Starting with Release 15SU3, virtual machines running on ESXi must be configured with a CPU mode that supports the AVX feature.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- virtual machine requirements
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15SU3 and later
- Checked
- 2026-09-25
Sources
- Upgrade and Migration Guide for Cisco Unified Communications Manager and the IM and Presence Service, Release 15 and SUs - Pre-Upgrade Tasks (Manual Process) — Cisco Systems · tier 2 current vendor documentation · Pre-Upgrade Tasks > 15SU3 note on AVX support
Cite this note
APA
WarmTransfer. (2026, September 25). Planning a Unified CM upgrade: source note cucm-upgrade-planning-avx-15su3. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-upgrade-planning-avx-15su3
BibTeX
@misc{warmtransfer-claim-cucm-upgrade-planning-avx-15su3,
title = {Planning a Unified CM upgrade: source note cucm-upgrade-planning-avx-15su3},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-upgrade-planning-avx-15su3},
note = {Source note cucm-upgrade-planning-avx-15su3, checked 2026-09-25}
}