VMWARE guest creation using a template

25 pts.
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NIC
VMware
VMware templates
OK I made a template and all is good, I just need to figure out how to get the deployed server from template to use a different name and not the name of the server used in the template. Sysprep I thought I read somewhere takes care of that but what exactly are the steps? Also where out there is good documentation on how your host should be setup (hardware) to handle X amount of vm's. I heard VM has an assesment tool but charges for it. I just want to know if I want to setup a host that can handle 10 VM's comfortably what amount of RAM should it have as well as how many NICS setup (ie a 4 port PCI card etc) Thanks a ton in advance
ASKED: June 3, 2008  7:18 PM
UPDATED: June 5, 2008  2:51 PM

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You will need to put the sysprep files onto the VMware Virtual Center server. They go in “c:\Documents and Settings\All Users\Application Data\VMware\VMware VirtualCenter\sysprep”. You’ll need to download the Sysprep for Windows 2003 and put it in the svr2003 folder. You can then use the deployment wizzard to change the name.

Personally I setup templates and have the templates setup to use the name that I give the virtual machine in the first step of the wizard.

If you are going to have Windows XP guests you do not need to put anything in the xp folder. It uses the same sysprep as Windows 2003.

If you will use Windows 2008 or Windows Vista as the guest OS you will need to use the latest version of ESX (3.5) and Virtual Center (not sure the newest version).

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  • Eric Siebert
    Your host hardware requirements will vary based on what you will be running on your VM's. If your VM's will be mostly low-medium utilization servers like web server, file/print servers, etc. then you should easily be able to host 10 of them on a multi-core ESX server. As far as memory goes again this will be based on how much memory your VM's will actually need. You can over-commit memory in ESX but it will reduce the performance of your VM's if they start swapping to disk once the host memory is exhausted. ESX does have memory saving techniques such as transparent page sharing which helps reduce the amount of physical memory used by VM's which can help if you do over-commit your host memory. When it comes to NIC's it all depends on how your ESX server is going to be configured, in general I would say 4 NIC's works well with an ESX server but it is best to add more if you are going to use vMotion and/or iSCSI. Also the number of NIC's you will vary based on your VLAN and redundancy needs. 802.1Q VLAN tagging gives you the flexibility to run multiple VLAN's on a single NIC. I think you will be fine with 4 NIC's and for 10 VM's I would have at least 8GB of memory, if you can afford more you would be better off with 12-16, again this will really depend on how much memory you will assign to your VM's. It's best to never give a VM more memory then it needs, you can always increase it later if needed. VMware's Capacity Planner that you mention is only available to business partners. If you contact one they can install it in your environment to help you with sizing your ESX server. Typically the business partners want you to buy ESX and some consulting services from them in exchange for helping you. I've attached a few links that might also help you with this. IBM Insights in Sizing Hardware for Virtualization HP ProLiant server sizer for VMware ESX Server I'm also in the process of writing a blog post on this subject in th next few days, you can read it here when it's published.
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  • Banktech2
    Thanks guys you rock. "Personally I setup templates and have the templates setup to use the name that I give the virtual machine in the first step of the wizard." How do you do that? is it the way your sysprep.ini is setup?
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  • Banktech2
    Also where in the wizard can you use sysprep to change the server name and IP, I don't see it, some things are greyed out like under customize. Only the top radio button is available.
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