Add a new drive - already formatted NTFS

[Kezza]

Now had the core up and running for a while and seems pretty stable I'm wanting to up the storage.

I have a 1TB drive that has movies on it and formatted as NTFS. If I add internally will it work fine with NTFS or is there benefit(or only option) of taking the data off the drive, formatting it ext3 and then reloading the data?

Added benefit of NTFS is I can shutdown slide the drive out and throw in other machine if ever needed.

Cheers