You have to go to a computer store and buy a hard disk drive. The larger the disk (5 gig, 8 Gig) is going to give you longer recording times. I have a 2.5 gig hard disk in my Fostex 8 track. this gives me 60 minutes of 8 track recording time.
Oh yeah...don't be cheap....get the best hard drive you can afford.(Western Digital)
The disk gets a lot of use during recording and editing.
Dom Franco