True, would be interesting to compare other supported hypervisors to ESXi. 
With limits in ESXi 5.0 free versions many will be looking for alternative 
hypervisors. 
I remember seeing support for Xen in future VCL releases - does it include Xen 
Cloud Platform (XCP) and XenServer 5.6/6 ?   

--
Thank you,

Dmitri Chebotarov
Virtual Computing Lab Systems Engineer, TSD - Ent Servers & Messaging
223 Aquia Building, Ffx, MSN: 1B5
Phone: (703) 993-6175
Fax: (703) 993-3404


On Thursday, May 24, 2012 at 21:03 , Sanders, Arbin D wrote:

> How about other hypervisors? KVM limits?
> 
> Arbin D. Sanders
> 
> Sent from my Motorola Smartphone on the Now Network from Sprint!
> 
> -----Original message-----
> > From: Dmitri Chebotarov <dcheb...@gmu.edu (mailto:dcheb...@gmu.edu)>
> > To: "vcl-u...@incubator.apache.org (mailto:vcl-u...@incubator.apache.org)" 
> > <vcl-u...@incubator.apache.org (mailto:vcl-u...@incubator.apache.org)>
> > Cc: "vcl-u...@incubator.apache.org (mailto:vcl-u...@incubator.apache.org)" 
> > <vcl-u...@incubator.apache.org (mailto:vcl-u...@incubator.apache.org)>, 
> > "vcl-dev@incubator.apache.org (mailto:vcl-dev@incubator.apache.org)" 
> > <vcl-dev@incubator.apache.org (mailto:vcl-dev@incubator.apache.org)>
> > Sent: Thu, May 24, 2012 17:54:59 EDT
> > Subject: Re: Max Number of VMs per Host
> > 
> > This link may be helpful
> > 
> > http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2000935
> > 
> > 
> > 
> > On May 24, 2012, at 5:32 PM, Alexander Patterson 
> > <alexander.patter...@csueastbay.edu 
> > (mailto:alexander.patter...@csueastbay.edu)> wrote:
> > 
> > > I'm not sure from what I have been reading, might want to contact your
> > > VMware Rep and see what they can do if you plan on upgrading to 5.
> > > 
> > > WIth ESXI 4.1
> > > 
> > > Infrastructure limitations
> > > Some limitations in ESX Server 4 may constrain the design of data centers:
> > > Guest system maximum RAM: 255 GB
> > > Host system maximum RAM: 1 TB[
> > > Number of hosts in a high availability cluster: 32
> > > Number of Primary Nodes in ESX Cluster high availability: 5
> > > Number of hosts in a Distributed Resource Scheduler cluster: 32
> > > Maximum number of processors per virtual machine: 8
> > > Maximum number of processors per host: 160
> > > Maximum number of cores per processor: 12
> > > Maximum number of virtual machines per host: 320
> > > VMFS-3 limits files to 262,144 (218) blocks, which translates to 256
> > > GB for 1 MB block sizes (the default) or up to 2 TB for 8 MB block
> > > sizes.However, on a VMFS Boot drive, it is usually very difficult to
> > > use anything other than 1 MB Block size
> > > 
> > > With ESXI 5 there has been some changes to these limits
> > > Guest system maximum RAM: 1 TB
> > > Host system maximum RAM: 2 TB
> > > Number of hosts in a high availability cluster: 32
> > > Maximum number of processors per virtual machine: 32
> > > Maximum number of processors per host: 160
> > > Maximum number of cores per processor: 25
> > > Maximum number of virtual machines per host: 512
> > > VMFS-3 is supported and has the same limits as before
> > > VMFS-5 however has a max volume size of 64 TB and a max file size of 2
> > > TB - 512 B
> > > How much vRAM does a VMware vSphere Hypervisor license provide?
> > > vSphere Hypervisor license provides a vRAM entitlement of 32GB per
> > > server, regardless of the number of physical processors. vSphere
> > > Hypervisor can be used on servers with maximum physical RAM capacity
> > > of 32GB.
> > > 
> > > On Thu, May 24, 2012 at 2:20 PM, Sanders, Arbin D <asand...@nccu.edu 
> > > (mailto:asand...@nccu.edu)> wrote:
> > >> Alexander,
> > >> 
> > >> What if I use the paid version of vSphere5? And I have 96 GB of memory? 
> > >> Could I get more than 20 VMs?
> > >> 
> > >> Arbin Darren Sanders
> > >> 
> > >> IT Manager - Academic Computing
> > >> North Carolina Central University
> > >> 712 Cecil Street
> > >> Suite 3014
> > >> Durham, NC 27707
> > >> 919.530.6307
> > >> 919.530.5097 (Fax)
> > >> 
> > >> For the Latest ITS Updates and Tips Join Us Online
> > >> 
> > >> CONFIDENTIALITY: This email (including any attachments) may contain 
> > >> confidential, proprietary and privileged information, and unauthorized 
> > >> disclosure or use is prohibited. If you received this email in error, 
> > >> please notify the sender and delete this e-mail from your system.
> > >> 
> > >> 
> > >> -----Original Message-----
> > >> From: Alexander Patterson [mailto:alexander.patter...@csueastbay.edu]
> > >> Sent: Thursday, May 24, 2012 5:17 PM
> > >> To: vcl-dev@incubator.apache.org (mailto:vcl-dev@incubator.apache.org)
> > >> Cc: vcl-u...@incubator.apache.org (mailto:vcl-u...@incubator.apache.org)
> > >> Subject: Re: Max Number of VMs per Host
> > >> 
> > >> Hello,
> > >> 
> > >> ESXI 5 is limit by licenses with the amount of ram you can run on each 
> > >> machine.
> > >> The 8 GB vRAM limit is for the upcoming 5.0 free Hypervisor, the 4.x 
> > >> version had no such memory limits.
> > >> VM makes you pay now if you want to use X amount of ram per host with 
> > >> the upcoming version.
> > >> 
> > >> Making 4.1 I Free Version a much more attractive option to go with
> > >> 
> > >> We have each of our blades running ESXI 4.1 with 16 Cores and 48 GB of 
> > >> ram and we have 20 VM's per blade but we give 1.5 GB of ram to each VM.
> > >> 
> > >> More info here
> > >> http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1014006
> > >> 
> > >> -Alex
> > >> 
> > >> On Thu, May 24, 2012 at 2:09 PM, Sanders, Arbin D <asand...@nccu.edu 
> > >> (mailto:asand...@nccu.edu)> wrote:
> > >>> 
> > >>> I am planning on using a free version of vSphere 5 depending on the how 
> > >>> many VMs I can get. I would like to get 50 VMs per host.
> > >>> 
> > >>> 
> > >>> 
> > >>> Arbin Darren Sanders
> > >>> 
> > >>> 
> > >>> 
> > >>> IT Manager - Academic Computing
> > >>> 
> > >>> North Carolina Central University
> > >>> 
> > >>> 712 Cecil Street
> > >>> 
> > >>> Suite 3014
> > >>> 
> > >>> Durham, NC 27707
> > >>> 
> > >>> 919.530.6307
> > >>> 
> > >>> 919.530.5097 (Fax)
> > >>> 
> > >>> 
> > >>> 
> > >>> For the Latest ITS Updates and Tips Join Us Online
> > >>> 
> > >>> 
> > >>> 
> > >>> CONFIDENTIALITY: This email (including any attachments) may contain 
> > >>> confidential, proprietary and privileged information, and unauthorized 
> > >>> disclosure or use is prohibited. If you received this email in error, 
> > >>> please notify the sender and delete this e-mail from your system.
> > >>> 
> > >>> 
> > >>> 
> > >>> From: Dmitri Chebotarov [mailto:dcheb...@gmu.edu]
> > >>> Sent: Thursday, May 24, 2012 12:01 PM
> > >>> To: vcl-dev@incubator.apache.org (mailto:vcl-dev@incubator.apache.org)
> > >>> Cc: vcl-u...@incubator.apache.org (mailto:vcl-u...@incubator.apache.org)
> > >>> 
> > >>> 
> > >>> Subject: Re: Max Number of VMs per Host
> > >>> 
> > >>> 
> > >>> 
> > >>> Here is some info:
> > >>> 
> > >>> 
> > >>> 
> > >>> http://myvirtualcloud.net/?p=1155
> > >>> 
> > >>> 
> > >>> 
> > >>> This is for VMware View which could 
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