The only question I'd want answered: What happens if at some point the locking mechanism fails and I'm unable to get it open? Over the years I've read horror stories on other gun boards by members who have had this happen. Has any one here had this happen or know of someone who did.
All depends on the type of safe, and the type of locking mechanism.
Safe locks work in 2-3 stages typically.
The first and most common issues occur with the Keypad or Dial, depending on if you go with electronic or mechanical.
Both have their pros and cons.
90% of the time its something simple like the battery in the keypad died, or is too weak to provide enough power to release the swingbolt in the lock body that is mounted on the inside of the door. To which you would just take the keypad off of the door and replace the battery.
When you punch the code, the swing bolt in the lock body is allowed to be depressed into the lock body, thus allowing the boltwork inside the door to be operated by the handle on the door and retract the locking bars that slide from the door into the frame.
Keypads can sometimes fail, but its not commonplace, and people who constantly change their safe codes can forget the new code, or mess up the programming when doing so and sometimes render both new and old code useless.
Typically most modern and named brand keypad/lock companies (Big names are Sargent & Greenleaf, AmSec (American Security) Lagard, and some others) All have factory reset abilities programmed into their software.
Dial safes are an entirely different animal and if one of those fail, more than likely you will need a locksmith or Safe technician to come with drill points, drill the mechanism to open the door, then replace it and repair the drill points in the safe. Any well trained and certified safe technician should have the proper tools, materials, and access to the drill points to perform this type of service. However it will not be cheap.
So that covers the keypad/dial and some of the more common mechanisms.
Actual safe redundancies get a bit crazier. Most quality safes have a trauma threshold to where if the safe is attacked with a certain amount of force, it would trigger a relocker which are thick bars that will need to be drilled through before the door could be opened again. These are also triggered by drilling and/or flame lancing attacks.
I won't bore you too much but safes can get a bit crazy. If you ever have any issues or even questions, feel free to Private Message me and i'd be more than happy to help.