CUCM OVF template

[adamgibs7]

Dears,

Please find the attached snapshot for the OVF template,

i am using cucm_8.6_vmv8_v1.5.ova when i choose 1000 node it uses 2 vCPU and when i use 2500 user nodes it uses only 1 cpu why that's so when the no's of users are increasing the cpu should also increase.

thanks

[Rob Huffman · Accepted solution]

Hi Adam,

Please see this note form the docwiki (for CUCM 8.6 ova);

Notes on 2500 user VM configurations

Note:

The 2500 user VM configuration with one vcpu may exhibit performance issues during CPU/IO-intensive operations (such as installs, upgrades, backups and CDR writes), or if your deployment has certain characteristics such as a large quantity of TFTP files. Changing the VM config to 2 vcpu is recommended as a prevention strategy. Otherwise you may deploy with one vcpu and be TAC-supported, but note that if the root cause of performance issues is found to be insufficient vcpu, Cisco TAC will ask that you change this to 2 vcpu. If your deployment is not experiencing any issues you are not required to change to 2 vcpu and may remain on 1 vcpu.

• Use for publishers, subscribers, standalone TFTP, standalone multicast MOH nodes.ELM or PAWS-M
• User count based on:
  • 1 device per user
  • 2.5K phones per VM
  • 10K max phones per cluster
  • 15K max BHCC per VM
  • 60K max BHCC per cluster
  • Your design/results may vary

From;

http://docwiki.cisco.com/wiki/Virtualization_for_Cisco_Unified_Communications_Manager_(CUCM)#Notes_on_2500_user_VM_configurations

Cheers!

Rob