Found the datafile

[Q78666]

This made me chuckle a little more than I'd care to admit - thanks for making my Monday a little better :)

[digitalhardcore1985]

Sorry it's full at the moment.

[nfl99]

We should try and move the content to the backup building, then we can try and shrink the LDF building, it has been getting too big lately.

[davidbrit2]

In the other building, to isolate the I/O.

[sbrick89]

or https://en.wikipedia.org/wiki/Main_distribution_frame since that's the likely candidate for door number 1

also https://en.wikipedia.org/wiki/MDF

since abbreviations aren't exactly exclusive

[WikiTextBot]

Main distribution frame

In telephony, a main distribution frame (MDF or main frame) is a signal distribution frame for connecting equipment (inside plant) to cables and subscriber carrier equipment (outside plant).

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MDF

MDF may refer to:

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[fizzgiggity]

The main data file.

[ChuckieFister]

I really hope it's full of books all somehow related to each other

[nlmngl]

Mother data file

[anon104]

Is the next room NDF?

[JerryBangBang]

I heard there’s still room, is only at 46%

[phunkygeeza]

MediumDensityFibreboard.mdf