[cisco-voip] Add new vCPU of CUCM server

[Anthony Holloway]

Great technical point there Dan. I did mean cores and not sockets.  This
conversation has me now wondering about the need to adjust the CPU
reservation in MHz under Resources > CPU.

In the 10.5 OVA it lists the following for the 5000 device option:

The 5000 user node
        Cisco Unity Connection (CUC) configuration that supports up to
	5000 users per node.
	Details:
        - Number of virtual CPUs: 2
           - For Xeon 5600 and 7500 processors - minimum of 2.53 GHz
each (5.06 GHz reserved or
           - For Xeon E7 processors - minimum of 2.4 GHz each (4.8 GHz reserved)
        - Amount of RAM: 6 GB
        - Hard disks: 1 x 200 GB (contains aligned partitions for CUC
application)
        - OS support: Red Hat Enterprise Linux 6 (64-bit)

Source:
http://www.cisco.com/web/software/282074348/113178/CUC_10.5_vmv8_v1.5.ova.README.txt

So, would one be expected to adjust the following setting to 5.06GHz or
4.8GHz?  Or simply leave it be?

[image: Inline image 2]


On Tue Feb 24 2015 at 10:23:48 AM Daniel Pagan <dpagan at fidelus.com> wrote:

>  Just to add to Anthony’s email, I suggest making sure to add to the vCPU
> socket count, not number of vCPU cores per socket. Also note that you can
> increase your vCPU socket count but should **not** decrease it – this is
> not supported.
>
>
>
> - Dan
>
>
>
> *From:* cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] *On Behalf
> Of *Anthony Holloway
> *Sent:* Monday, February 23, 2015 6:51 PM
> *To:* Claiton Campos; cisco-voip at puck.nether.net
> *Subject:* Re: [cisco-voip] Add new vCPU of CUCM server
>
>
>
> Yes.  You would need to shutdown the VM first, and then just add the new
> vCPU count under Edit Settings of the VM.  It's the disks which you cannot
> simply increase from within VMWare.
>
>
>
> This is something I did recently during an upgrade of CUCM from 8x to 10x
> on a C210M2 which was using the 2500 user OVA.
>
>
>
> This is what I read which prompted me to change mine:
>
>
>
> “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.”
>
>
>
> Source: http://docwiki.cisco.com/wiki/Virtualization_for_
> Cisco_Unified_Communications_Manager_(CUCM)#Notes_on_2500_
> user_VM_configurations
>
>
>
> On Mon Feb 23 2015 at 5:42:14 PM Claiton Campos <claitoncampos at gmail.com>
> wrote:
>
>  Hello , someone has come to change the amount of vCPU a CUCM server in production? Recently 'm having problems with high throughput publisher server and as directed by the TAC is suggested to add a new vCPU to the server. My question is whether the server recognizes this new vCPU .
>
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>
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