Interested in MTTs; BR Question

[djg40]

I am a Limit ring game player, and I am interested in playing some Multi Table Tournaments. However, I am unsure as to how many buy-ins my Bankroll needs to be so that I am sufficiently covering any possible variance.

If anyone can let me know how many buy-ins I should have in my Bankroll to play in some MTTs, it would be much appreciated.

Also, I apologize if this is asked a million times, but I whenever I try to use the search function, it seems that all I find are plenty of topics with little or nothing to do with my search string.

Thank you again.