[cisco-voip] Cluster servers: Cisco Unified Communications Manager Capacity Tool V4.1

[Lelio Fulgenzi]

We have about 7500 end devices not including CTI ports. We have a dedicated publisher and TFTP server (no registered devices) plus 4 subscribers. We have these split across two computer rooms. We probably could have gone with less, but the incremental cost of the hardware let's us sleep better. If one computer room were to completely go dark, we have two subscribers to maintain the almost 4000 devices on the remaining two and not worry about publisher or tftp server being overloaded. 

In the grand scheme of things with a deployment over 5000 phones an extra subscriber or two is peanuts compared to the overall cost. Grab an HP/IBM instead of Cisco badged and the cost goes down further. 


--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN) 
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"Bad grammar makes me [sic]" - Tshirt 


----- Original Message ----- 
From: "FrogOnDSCP46EF" <ciscoboy2006 at gmail.com> 
To: "Ed Leatherman" <ealeatherman at gmail.com> 
Cc: cisco-voip at puck.nether.net 
Sent: Saturday, November 8, 2008 11:16:06 AM GMT -05:00 US/Canada Eastern 
Subject: Re: [cisco-voip] Cluster servers: Cisco Unified Communications Manager Capacity Tool V4.1 

I think 7500 end points is theoretical. Does Cisco has some kind of the test doc on that? 
I'm saying that because in real life I always seen more than 8 servers for more than 5k+ users 
3 servers cluster struggles and runs over 96% utilization. 
I know there are many factors involved but 

Can anyone confirm the number of servers they are having to run more than 5K+ end points? 




On Sat, Nov 8, 2008 at 2:59 AM, Ed Leatherman < ealeatherman at gmail.com > wrote: 


MCS-7845's technically support 7500 endpoints each.. So i guess you could have 3 servers for that cluster with the pub acting as a backup in the event one of the subscriber nodes went down. Not sure I like that design though myself. 





On Fri, Nov 7, 2008 at 9:28 AM, FrogOnDSCP46EF < ciscoboy2006 at gmail.com > wrote: 





Has anybody used this capacity tools? 
I am trying to figure out how many servers I need for a cluster for 10K users. 

This tool only gives me 3 servers, which I am sure aren't enough. 

Any hint appreciate. 


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Smile, you'll save someone else's day! 
Frog 

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-- 
Ed Leatherman 
Assistant Director, Voice Services 
West Virginia University 
Telecommunications and Network Operations 



-- 
Smile, you'll save someone else's day! 
Frog 

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