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VMware - some advice needed

Hi
I am competley new to using VMware. Havent touched it all before. My company hosts servers. And we are looking to hosts multiple servers on the one machine. We host and configure small business servers...can I run multiple sbs (domain controllers) on the same machine?  What are the benifts to using VMware? And someone told me about it being a very good disaster recovery solution, apparantley you can backup the image of the OS...is this true? Anyone advice will be appreicated.
Thanks
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Dan560
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Dan560
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1 Solution
 
KCTSCommented:
While you technically could run multiple SBS servers on a host in VMware, remember that you are only allowed ONE SBS server in any domain, so unless you plan to have multiple independant domains there would be little point.
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Dan560Author Commented:
Well, we are looking to have multiple independant domains,basically one domain controller for each company that pays us a rental fee of the server. So basically they get exchange/sharepoint/OWA etc....I have been warned that you shouldnt have multple small business server not only in the same domain (as I understand that this is big no no) but also under the same network, is this true?
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nappy_dCommented:
Yes you can run multiple sbs domain controllerson the smae VM box.  But at other have pointed out, you cannot have them all in the same domain.  The beauty of VMWare, isthat you can have on a 3.2Ghz machine with 16GB of RAM, as easily as 6 or more Virtual servers.

Things you should consider:

  • at least two or three ESX hosts
  • SAN for storage of your Virtual guest OS's
    • Include a secondary fibre switch for redundancy to your SAN
  • You do not need more than 2GB of server space for ESX to run
  • You can even boot from USB 2GB keys for the ESX Host
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Dan560Author Commented:
Thanks for this, I wont be  having machines on the same domain anyhow. Can you have devices on seperate subnets? For example I may have windows 2003 server,and windows 2003 sbs server, is it possible to set them up on seperate subnets so that there will be no communication between them?
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nappy_dCommented:
Yes, this is done via virtual network switching...

virtswitch.png
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nappy_dCommented:
You can even do vlan Tagging and team NIC ports for greater thru put.

Just to clarify, the reason for the minimum of two or three esx hosts is for redundancy.  Like RAID, if any one of the ESX hosts fails, the others pick up and carries on.
 
 What you do, is spread your multiple virtualized servers as evenly as possible across the two or three or more ESX hosts for resource allocation and performance.
 
 It's pretty neat...not to mention the reduction of server sprawl, heat reduction, cooling requirements and hardware costs over time.........
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Dan560Author Commented:
Excellent thanks for the advice.
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