VDI Shared RAM
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PDABoy
5 pts.
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Q:
VDI Shared RAM
RAM, VDI, VMware ESX 3.5, Windows Virtualization, Desktop virtualization
I am running ESX 3.5 Servers with 32 CPU x 2.3ghz and 128 gig RAM.

I am wondering how does VMWare share RAM? If I were to give every machine 2 gigs of RAM and 2 processors. How many machines would I be able put on this box? Windows 7 with Office 2007. Knowledge workers. Also how many Windows XP machines would I be able to get with 1 gig of RAM and 2 Gigs of RAM?



Software/Hardware used:
ESX 3.5, 8 Quad Cores 2.3ghz, 128gig RAM DL785 G5
ASKED: Oct 21 2009  5:28 PM GMT
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Mshen
23520 pts.
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A:
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The answer depends on the type of applications running on those machines. There is no way to really tell until you run benchmark tests on a loaded server.

Taking advantage of memory overcommit, you can allocate more than 128 GB of ram to your virtual machines. You also need to consider ESX memory sharing where the ESX server will compare memory pages and free up additional memory by sharing the same memory pages between multiple machines. The actual difference between the number of idle XP machines with 1 GB of ram compared to 2 GB of ram won't be that much if any.
Last Answered: Oct 21 2009  10:01 PM GMT by Mshen   23520 pts.
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