Any Specific limit on maximum number of content revisions

Hi Guys , I just need to know is there any theoratical limit on the number of content revisions that we can set on SEP 12.1.6 MP3 ? I believe we cannot go beyond than 180 that is worth of 2 months of definations.  I know that it will consume excessive Disk space but the at the same time I am also wondering that since SEP 12.1.6 has efficent and optimized mechanism for storing content definations so it shouldn't be a problem.

Would appreciate your feedback and input. Thanks