I designed and managed the MSFT network for an international bank between 2003 and 2005. At the end, we had 170 or so physical servers, with an average spec of 4 cores and 4 GB RAM. Thanks to MOM 2005, I knew the average CPU utilisation was around 12% … perfect for virtualisation.
Assuming that workload trebled over the years (and it wouldn’t have), that would be:
- 2040 Cores at 12 %, giving us 244 logical processors requires (not very scientific but you get the gist), and that’s not accounting for increased horsepower in newer processors.
- 2040 GB RAM, which is half of the max of 4 TB in a host, without using Dynamic Memory.
- 510 VMs
It’s amazing to think that all of this could run on a single Windows Server 2012 RC Hyper-V host.