This statistic is only updated at startup and when CA-IDMS writes a DC050001 message.
A DC050001 message is written according to the following algorithm:
If the percent full is less than 78%:-
The DC050001 message is written if the percent full is 12.5% more than the last time the message was written, for example, at 12.5% 25% 37.5% etc.
If the percent full is greater than 78%:-
The DC050001 message is written when the percent full is half as close to 100% as it was the last time, for example, at 80% 90% 95% 97.5% etc.