You're going to need a separate USB drive per VM, and note that it can get tricky under Linux hosting to get the VM to pick up the drive so that the guest VM can use it. I don't run Windows so I don't know if it suffers from the same temperamental behaviour
I am working right now on an "Official" diskless VMWare image that will use a .vmdk virtual disk to run from and save and restore the WUs, keep your eyes open for the next release.
That sounds like the perfect solution
You can get the same or better PPD with 2 clients. Right now @ 3.6GHz I have a 2653 and 3064 running and am getting 5800PPD. A single SMP 2653 can do ~4200PPD if you've got your rig setup right.
Linux SMP or WinSMP? And what's your secret
@notfred good news to hear about .vmdk virtual disk. I briefly tried to set one up and kept getting host/guest driver compatibility errors.
@cob no secrets... A lot of reading, 2 weeks of trial and error, quality components (RAM gets finicky @ 1200MHz), and having a motherboard that allows tRD adjustments is a requirement. Luck also plays a role, WU assignment can very PPD over 2000
The box I'm talking about is running notfred's 1 SMP/2cores (2 SMP Clients on a Q6600) In general however higher PPD is easier to obtain running 2 SMP clients under VMWare Server (tends to get a better WU mix) It was really a fluke that I got this machine running so fast I was trying to build a energy efficient box but it was running so well I just kept cranking it up. It still does quite well on a PP/Watt basis as it runs about 150W under full load. I don't know if this plays factor in performance (maybe from a stable power perspective or non restricted airflow) but this box has NO HD, NO CD, NO Video...Just RAM, CPU, HSF, and USB stick.