A safe connotes something smaller than a vault, and may be movable, while a vault is generally built in-place and would be torn down rather than moved.
The computer jargon use of vault may be due to its connotation of greater security. It is also attractive because it is less common, and is only a noun (in this sense) and thus quicker to interpret, whereas safe can be noun, verb, or adjective (and heavily used in the latter sense in the computer security context).
"As you are able" simply refers to ability without detailing what kind of ability. It applies equally to physical ability, mental/emotional ability, temporal/geographical ability, etc. In most cases the meaning is based on context, but sometimes it is left up to the listener to determine for themselves how to receive the instruction.
It must also be noted that in this context "as" can be replaced with "if."
Often, in church, you hear "Please kneel, as you are able." In this context it usually refers to a physical ability to be able to bend your knees or be able to lift yourself back up into your seat, which can be daunting tasks to the elderly. It applies equally well to a parent holding an infant or sleeping child, even though they have the physical strength (ability) to kneel.
You may hear the following from someone who is giving you advice on what to do while vacationing in Hawaii. "You should spend a day picking pineapples if (as) you are able." Here the context suggests that you probably have the physical ability to pick pineapples, but the constraint on ability is more likely due to time or which island you will be staying on.
Best Answer
When it is said that "the files are corrupt", it isn't clear whether the files were corrupt from the time they were created, due to problems with data entry, ETC., or that the files became corrupt after a problem.
Saying that "the files are now corrupted" implies that there was a clean state for the files in the past, and that they need to be returned to the clean state for the software to work properly.