VMware vSphere vCenter Server 4.0 User Manual
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Figure 4-3. Admission Control with Expandable Resource Pools: Successful Power-On
VM-K1, 2GHz
VM-K2, 2GHz
2GHz
6GHz
RP-KID
VM-M1, 1GHz
RP-MOM
Now, consider another scenario with VM-M1 and VM-M2 (shown in
n
Power on two virtual machines in RP-MOM with a total reservation of 3GHz.
n
You can still power on VM-K1 in RP-KID because 2GHz are available locally.
n
When you try to power on VM-K2, RP-KID has no unreserved CPU capacity so it checks its parent. RP-
MOM has only 1GHz of unreserved capacity available (5GHz of RP-MOM are already in use—3GHz
reserved by the local virtual machines and 2GHz reserved by RP-KID). As a result, you cannot power on
VM-K2, which requires a 2GHz reservation.
Figure 4-4. Admission Control with Expandable Resource Pools: Power-On Prevented
VM-K1, 2GHz
VM-K2, 2GHz
2GHz
6GHz
RP-KID
VM-M1, 1GHz
VM-M2, 2GHz
RP-MOM
Chapter 4 Managing Resource Pools
VMware, Inc.
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