I have been documenting my UC7 installs in VMware Server 2 and VMware ESXi at ccie.gresz.ca including a couple of walkthough videos.
You can install CUCM and CUC with 1024 M. CUPS requires just under 1300 M or it won't install (gives you an error on install). CUCCX requires 2048 M to install, but after installation you can bring the VM guest memory back down to 1024 M. I'm running VMware Server 2 on Ubuntu 8.10 server 64-bit with an Intel 2.4GHz quad-core with 8Gig RAM. I've also installed the same five UC7 applications over two old MCS servers (HP DL380 G3) with 6 Gig each running VMware ESXi. I haven't spent a lot of time testing the performance. I guess I will find out more as I continue the integration and start into the IPExpert v3 labs. This is what VMware shows as the resources being used by the various guest servers running in an idle state, but I'm not sure how accurate the reporting is. This is from a default install, no integration or provisioning so far. CUCM7a (pub): 245 M, 0.083 GHz CUCM7b (sub): 163 M, 0.058 GHz CUPS7: 364 M, 0.092 GHz CUC7: 419 M, 0.245 GHz CUCCX7: 153 M, 0.012 GHz
