[cisco-voip] Server Sizing

[Nate VanMaren]

We are running  about 8k phones or so on 7 severs
Pub
TFTP/IPVMS A+B
SUB 1A+1B
SUB 2A+2B

They're all 7845 class HP boxes.

I don't know that I would do it any other way.
From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Wes Sisk
Sent: Thursday, May 12, 2011 11:36 AM
To: Daniel
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Server Sizing

Daniel,

Thanks for clarifying that.

A bit of disclaimer: participation in this mailer comes with no warranty, validation, our guarantee.  This is helping out in a community. For formal design guidance contact your Cisco account team.

TFTP and IPVMS in general will consume less resources.  TFTP mostly requires memory and CPU for building and caching files in memory. IPVMS mostly requires CPU for originating and mixing audio streams.


Otherwise to your question:
What would be the recommended architecture for subscribers?
- Currently looking at having 3 x 7845 for Subs for about 7500 phones including Softphones

Option#1
- 2 CCM Groups to have all phones split 50-50
                CUCM Group1                  CUCM Group2
                Sub A                                    Sub B
                Sub B                                     Sub A
                Sub C                                     Sub C

Option#2
- 2 CCM Groups to have all phones split 50-50
                CUCM Group1                  CUCM Group2
                Sub A                                    Sub B
                Sub C                                     Sub C
                Sub B                                     Sub A


In Option #1 if SubA goes down then SubB is hosting all of Group2 and concurrently attempting to register all phones from Group1. That could be a bottle neck. It could cause Group2 to affect service for Group1.  This risk arises with only 1 failure (either SubA or SubB fails).

In Option#2 if SubA and SubB fail then SubC has to register all phones. This risk arises with 2 failures (SubA fails AND SubB fails).

Regards,
Wes


On 5/10/2011 10:41 PM, Daniel wrote:
The publisher is not running any call processing.

I was asking for opinions on sizing the last two TFTP and IPVMS servers with less resources.


On Wed, May 11, 2011 at 11:18 AM, Wes Sisk <wsisk at cisco.com<mailto:wsisk at cisco.com>> wrote:
With more than 3 nodes in the cluster the publisher generally should not run call processing. It should be a dedicated publisher.

Regards,
Wes


On 5/10/2011 5:48 PM, Daniel wrote:
Hi Guys,

I'm setting up a new cluster that has 7 nodes, publisher, 4 subscribers, and 2 dedicated servers with each running TFTP and IPVMS.

This is all UC on UCS. The publisher and subscirbers have been setup with the 7500 user OVA/F file. I would like to get peoples thoughts on setting the last two servers that are each running TFTP and IPVMS only (no call processing) to be setup with the 2500 user OVA/F file?

It will use less space from our SAN etc.. does it need to be the same size since they're not doing call processing?

cheers,

Dan



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