that gives you some idea how much disk space you need for the database with given number of symbols, retention length and interval. It also gives absolute minimum free RAM size required to process one symbol data of specified length and interval.
Very nice utility - May I please make a suggestion - you may want to allow the user to spicify the duration of trading in a day - as the utility in its present form seems to presume trading for 1440 minutes - 24 hours, however most of times trading happens for fewer hours
For example, here in India - mostly trading happens for around six hours (Except for Commodities)
Again - thank you very much for the nice tool to see reality.