[cisco-voip] UCS Sizing woes

[Chris Lee]

Cisco recently updated their docwiki on May 22 -

http://docwiki.cisco.com/wiki/Unified_Communications_in_a_Virtualized_Environment


Regards,

Chris

On Tue, May 21, 2013 at 9:12 AM, Ki Wi <kiwi.voice at gmail.com> wrote:

> Anyone used spec based and run into any production issue?
>
> Spec based requires vsphere server to monitor performance, so far i didn't
> sell any solution based on that. Just worried that client will run into any
> issue due to IOPS.
>
>
> On Tue, May 21, 2013 at 5:22 AM, Justin Steinberg <jsteinberg at gmail.com>wrote:
>
>> there are plenty of OVA templates you can deploy where the virtual
>> machine only needs 1 vCPU.  Also, if you go specs based, there are CPUs
>> that go up to 8 cores that you can put in a C220.  Two of those CPUs and
>> you have 16 cores for your VMs.  At that point you are probably going to be
>> concerned about your disk IO if you have DAS
>>
>>
>> On Mon, May 20, 2013 at 11:46 AM, Ki Wi <kiwi.voice at gmail.com> wrote:
>>
>>> That's is really sad. It is really a waste of resources especially if we
>>> purchased TRC servers. Hardly those tiny VMs even use near 24gb of memory :(
>>>
>>>
>>> On Sun, May 19, 2013 at 8:50 PM, Matthew Saskin <msaskin at gmail.com>wrote:
>>>
>>>> Unfortunately, PCCE is a very special use case tested and approved by
>>>> the CCBU.  For all other applications, the rule of no CPU or memory
>>>> oversubscription applies.
>>>> On May 18, 2013 4:39 PM, "Ki Wi" <kiwi.voice at gmail.com> wrote:
>>>>
>>>>>  All along each C220 server (based on TRC spec), i have sized can only
>>>>> accomodate like 3 to 4 Cisco VM . Partly because C220 is only 8 CPU core.
>>>>> If each VM actually takes up 2 vCPU , i can only squeeze 4 VM. If i have a
>>>>> Unity connection VM, i am able to squeeze only 3 VM since CUC will takes up
>>>>> additional CPU core.
>>>>>
>>>>> I discovered that I might be wrong all along after I have read the
>>>>> PCCE sizing. Looks like if my UCS server have 4 cores , my largest VM needs
>>>>> only 4vCPU for example. As long as the total CPU reservation and memory
>>>>> reservation doesn't hit the limit, i could actually squeeze more VM in? Is
>>>>> this true? I know it is true in VMware world (since i am vcp certified) but
>>>>> I was somehow mislead to believe that each vCPU requirement actually maps
>>>>> to 1 physical core.
>>>>>
>>>>>
>>>>> http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/pcce/pcce_901/reference/guide/PCCE_BK_PBD08CF9_00_packaged-cce_chapter_00.html
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>>>
>>>
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>>>
>>
>
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