A media processing unit (MPU) is a normalized measure of the cost of using a predefined set of granular resources within a media server session.

The concept of an MPU is used to:

• Describe the potential capacity of a media server instance. This is known as an MPU rating.

• Describe the potential aggregate capacity of a cluster or network of media servers.

• Estimate the cost of a media server session utilizing specific resources (required by one or more applications).

• Provide a model for capacity planning across multiple products and applications sharing the same media server instances.