Mastering vRealize Operations Manager - Second Edition

High Availability and buffers (usable capacity)

Now, we reach the final component of capacity management policies, High Availability (HA) and buffers. The concept of usable capacity is not new to vRealize Operations 6.0, but there are some great improvements, especially around virtual machines.

First and foremost, we need to discuss usable capacity vs. actual capacity. In vCenter Operations Manager 5.x, it was possible to choose whether your remaining capacity was based on usable capacity or actual capacity. Actual capacity is the raw capacity of an object based on its physical configuration. Usable capacity, on the other hand, is the physical capacity minus buffers to reflect a real-world environment.

Since vRealize Operations 6.0, you now ...