I got my information from the OP of the Burst coin announcement thread.

File storage(disclaimer: still figuring out a good way to do this. this will take a while.)

That's all I know about it.

I asked if the file storage facility was functional yet on the Burst coin thread, and was told it's not ready yet in the reply quoted below.

File storage(disclaimer: still figuring out a good way to do this. this will take a while.)

Forgive my ignorance because I'm new to burst, but can you use the coin to store files yet?

Not as of yet