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From Chip Childers <chip.child...@sungard.com>
Subject Re: [PROPOSAL] Raise cluster size limit to 16 on VMware
Date Thu, 20 Dec 2012 16:52:29 GMT
Sorry, should have been more clear in my question. What's the math
that got you to 8?

- chip

Sent from my iPhone.

On Dec 20, 2012, at 11:50 AM, Alex Huang <Alex.Huang@citrix.com> wrote:

> Kelven offered a reason earlier.
>
> "8-host limitation comes from the limitation posted from VMFSv3 for
> linked-clone usage. So in CloudStack, it is an artificial limit we post to
> reduce possible runtime problems."
>
> It's due to VMFSv3 and usage of linked clone in CloudStack.
>
> --Alex
>
>> -----Original Message-----
>> From: Chip Childers [mailto:chip.childers@sungard.com]
>> Sent: Thursday, December 20, 2012 8:46 AM
>> To: cloudstack-dev@incubator.apache.org
>> Subject: Re: [PROPOSAL] Raise cluster size limit to 16 on VMware
>>
>> On Thu, Dec 20, 2012 at 10:24 AM, David Nalley <david@gnsa.us> wrote:
>>> On Thu, Dec 20, 2012 at 1:54 AM, Koushik Das <koushik.das@citrix.com>
>> wrote:
>>>> This http://www.vmware.com/pdf/vsphere5/r51/vsphere-51-
>> configuration-maximums.pdf mentions that the max. can be 32 for ESX 5.1.
>> Any specific reason to make it 16? Also it needs to be seen that this limit
>> works across all supported ESX versions.
>>>>
>>>> -Koushik
>>>
>>> Yes - the different versions having different limits complicates things a bit.
>>> 5.1 = 32, 5.0 = 16 4.x = 8?
>>>
>>> --David
>>
>> 4, 5 and 5.1 are all 32 hosts per cluster.  Raw metrics, not using a
>> more complex algo to calculate the more realistic cap.  Just curious,
>> but are there more specific reasons that we are talking about 4.x
>> having a lower number?
>>
>> http://www.vmware.com/pdf/vsphere4/r40/vsp_40_config_max.pdf
>> http://www.vmware.com/pdf/vsphere5/r50/vsphere-50-configuration-
>> maximums.pdf
>> http://www.vmware.com/pdf/vsphere5/r51/vsphere-51-configuration-
>> maximums.pdf
>>
>> -chip
>

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