[cisco-voip] help explaining UC on UCS CPU requirements

[Lelio Fulgenzi]

we're on v7. i'd say that's pretty current. ;) 

the investigation is to see how much it would be to replace our current hardware if v9 does not install on it. basically going to compare buying new single server HP hardware vs Cisco UCS TRC configs. 

we'd be OK with CallManager/Connection for a few years, but IPCCx v7 has an end of support date April 30, 2014 which means we have to upgrade both CallManager and IPCCx before that date. so it looks like upgrading next summer. i'd rather not have to wait until a week before the date to upgrade. 

--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (ANNU) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Cooking with unix is easy. You just sed it and forget it. 
- LFJ (with apologies to Mr. Popeil) 


----- Original Message -----
From: "Nate VanMaren" <VanMarenNP at ldschurch.org> 
To: "Lelio Fulgenzi" <lelio at uoguelph.ca>, cisco-voip at puck.nether.net 
Sent: Friday, August 10, 2012 10:05:17 AM 
Subject: RE: [cisco-voip] help explaining UC on UCS CPU requirements 




Lelio , 



Does this mean you're finally getting onto a current CM version? 



-Nate 


From: cisco-voip-bounces at puck.nether.net [cisco-voip-bounces at puck.nether.net] on behalf of Lelio Fulgenzi [lelio at uoguelph.ca] 
Sent: Thursday, August 09, 2012 4:14 PM 
To: cisco-voip at puck.nether.net 
Subject: Re: [cisco-voip] help explaining UC on UCS CPU requirements 




ok, this note answers my question... sorry for the traffic. 

UC apps do not support CPU oversubscription. One VM vCPU must map to one physical core (not one logical core) ( click here for details). 

--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (ANNU) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Cooking with unix is easy. You just sed it and forget it. 
- LFJ (with apologies to Mr. Popeil) 


----- Original Message -----
From: "Lelio Fulgenzi" <lelio at uoguelph.ca> 
To: cisco-voip at puck.nether.net 
Sent: Thursday, August 9, 2012 5:52:26 PM 
Subject: Re: [cisco-voip] help explaining UC on UCS CPU requirements 




OK, my reading was wrong for the C240 M3S. It has a total of 16 CPU, so 16x2.7GHz. 

So either a total of 8 OVAs based on 1:1 vCPU:pCore, or 12 based on reservation. 

The more I'm thinking about it, I'm thinking it's 8 since you want some extra CPU cycles for each server. 


----- Original Message -----
From: "Lelio Fulgenzi" <lelio at uoguelph.ca> 
To: cisco-voip at puck.nether.net 
Sent: Thursday, August 9, 2012 3:59:03 PM 
Subject: help explaining UC on UCS CPU requirements 



I'm wondering if someone can help explain some of the UC on UCS CPU requirements that I'm seeing. I getting a little confused by some of the terminology and stuff in brackets. 

When I read the OVA requirements for a 7500 user node, it says 2 vCPU (with 3600MHz reservation) and physical load calibrated to E5540 2.53 GHz. 

If I want to install this OVA on a UCS C240 M3S (SFF) TRC#1 which has Dual E5-2680 (8-core, 2.7 GHz) do I do some sort of reservation of total CPU Hz available? Or is it simply a 1:1 core assigned, vCPU to pCPU? 

The total Hz available is 8x2.7G=21.6GHz which means I could install 21.6/3.6=6 of these OVAs? 

Or do you do CPU math, 8/2 = 4 OVAs allowed to be installed? 

The math and disk space calculations seem much easier. 



--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (ANNU) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
Cooking with unix is easy. You just sed it and forget it. 
- LFJ (with apologies to Mr. Popeil) 



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