Hi. I'm doing a couple of CAs at my customers, and I keep getting higher recommended numbers of host servers than expected. When I dug a little deeper into the numbers, I realized that this mostly was because of the number of "pages per second", which by default has a limit of 200.

I increased this limit to 1000 just to see what would happen, and the number of recommended host servers dropped from 18 to 5 (!!)

Now, I'm a bit curious about this value:

1. Is 200 really a fair limit for a host server? If not, what would you suggest?

2. The calculated sum of pages/s for the host server in Capacity Planner is the sum of the individual VM's pages/s. Is that really correct, or does the host server have an own performance value for pages/s? How is it sampled in a good way? I can't find it in the VI client.

3. What are your real-life values for pages/s on the hosts?

4. What are your real-life values for pages/s on the VMs?

5. What are your real-life values for pages/s on the physical boxes being polled by CP? Mine are mostly between 30 and 60 (with 3 exception servers around 350) in one company, and between 80 and 200 (with 2 exception servers around 1,100) in another company.

6. Isn't a high pages/s value usually a sign of not having enough RAM, which would indicate that if the server is P2V:d and given some more RAM, the pages/s would drop?

EDIT: http://support.microsoft.com/kb/889654 has some good info on this counter.