It would not make any sense to refer to “the” hard drive, if there were multiple hard drives in question.
If there is one hard drive and multiple archival copies of it, news stories should not confuse this.
... On the other hand, Fox & Friends just had a report on this story, and showed the FBI’s subpoena listing serial numbers for “the hard drives.”
So evidently there are several computers, and they got several drives.
Either Rudy just got one of the drives, is only reporting on one of them, or Rudy and / or the media is conflating the contents of several drives into one.