CUCM performance evaluation

[samhopealpha]

Dear everybody,

I'm now using CUCM 8.6 with a publisher and a subscriber

and about 1000 phones had registered to this cluster

all the IP phones are using

- subscriber as the primary active CUCM, and

- publisher as the standby CUCM

If I am going to add another 300 phones to this cluster,

How do I know the CUCMs have enough resource to handle the extra 300phoens or more?

I have checked the processor and memory on both CUCM via the RTMT

Publisher

processor avg usage : about 75%

memory avg usage : about 90%

Subscriber

Processor avg usage : about 60%

Memory avg usage : about 75%

But those information seems hard to evaluate... what will happen after extra serveral hundreds phone to be added.

Is there any idea ?

Thanks

Sam

[Chris Deren]

What hardware are you using for the servers? If UCS which OVA templates?

Chris

[samhopealpha]

Cisco 7800 Series Media Convergence Servers

[amansin74]

Search for MCS /UCS on the below link:

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/8x/sizing.html#wpxref46680

Hope that helps , coz its just recommendation. For real time evaluation , I also want to know .