Calculating current database after-image volume

There are several ways to determine how much after-image data your database is currently generating. To determine the highest volume at any one time, you must sample at a small interval, such as one minute, for several days or over a month to arrive at average usage per month. Then, take the maximum value of your sample. If your network is close to capacity, the difference between the average load and the maximum load may be enough to saturate the network, causing additional network problems.

You can calculate after-image volume by using any of the following typical methods:

It is important to note that none of these methods takes into account spikes in after-image activity.