# License Usage Calculations

License usage is calculated for the current license consumption and the peak license consumption. Current usage appears in the License Summary Report and peak usage appears in the Subclient Peak Usage Report.

## Current Usage

Current license usage is the current amount of data protected or the current number of entities, such as users, devices, or VMs, protected at any given time. The current license usage changes any time the size of protected data increases or decreases, or any time an entity is added or removed. You can view the current license usage in the License Summary Report.

## Subclient Peak Usage

Subclient peak license usage is the total amount of data protected or the total number of entities protected, such as users, devices, or VMs, throughout an entire month. The peak continues to grow over the course of a month as more data is protected or more entities are added to the CommCell environment. You can view the subclient peak license usage in the Subclient Peak Usage Report.

## Managed Service Providers

If you are a service provider who bills customers, you should use the Subclient Peak Usage Report for this purpose. This report aligns with your billing needs because it includes all clients and entities (users, devices, VMs and so on) that were active early in the month but were deconfigured or deleted later in the month.

The Peak Capacity Usage Growth Report has been replaced by the Subclient Peak Usage Report. For Commvault 11.30 and more recent versions, you must begin using the Subclient Peak Usage Report for billing purposes.

## Example of License Usage Calculations

The following example explains how license usage calculations can change over time during a single month.

### July 1

On July 1, a CommCell environment includes 3 clients that contain a total of 3 TB of protected data.

Clients | Data
--- | ---
Client 1 | 1 TB
Client 2 | 1 TB
Client 3 | 1 TB

Therefore, the current license usage is 3 clients and 3 TB, and the subclient peak license usage is 3 clients and 3 TB.

Calculation | Clients | Data
--- | --- | ---
Current Usage | 3 | 3 TB
Peak Subclient Usage | 3 | 3 TB

### July 10

On July 10, 2 clients that contain 3 TB are added and 1 client that contains 1 TB is removed.

Clients | Data
--- | ---
Client 1 (removed) | 1 TB (removed)
Client 2 | 1 TB
Client 3 | 1 TB
Client 4 | 2 TB
Client 5 | 1 TB

Therefore, the current usage is 4 clients and 5 TB, and the subclient peak usage is 5 clients and 6 TB.

Calculation | Clients | Data
--- | --- | ---
Current Usage | 4 | 5 TB
Peak Subclient Usage | 5 | 6 TB

### July 20

On July 20, 1 client that contains 1 TB is added and 3 clients that contain 4 TB are removed.

Clients | Data
--- | ---
Client 1 (removed) | 1 TB (removed)
Client 2 (removed) | 1 TB (removed)
Client 3 (removed) | 1 TB (removed)
Client 4 (removed) | 2 TB (removed)
Client 5 | 1 TB
Client 6 | 1 TB

Therefore, the current usage is now 2 clients and 2 TB, and the peak subclient usage is now 6 clients and 7 TB.

Calculation | Clients | Data
--- | --- | ---
Current Usage | 2 | 2 TB
Peak Subclient Usage | 6 | 7 TB

### July 31

On July 31, 1 client that was previously removed is added back to the CommCell environment.

Clients | Data
--- | ---
Client 1 | 1 TB
Client 2 (removed) | 1 TB (removed)
Client 3 (removed) | 1 TB (removed)
Client 4 (removed) | 2 TB (removed)
Client 5 | 1 TB
Client 6 | 1 TB

Therefore, the current usage is now 3 clients and 3 TB, and the subclient peak usage is still 6 clients and 7 TB.

Calculation | Clients | Data
--- | --- | ---
Current Usage | 3 | 3 TB
Peak Subclient Usage | 6 | 7 TB

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