Datavideo MP-4100 - Manual (Page 15)

14
Recording Time in a 60GB or 80GB HDD
The estimated recording time on a 60GB HDD is about 46 hours with 30fps (NTSC video)
and highest video recording quality (D1 resolution of 704 x 480)
The estimated recording time on a 80GB HDD is about 61 hours with 30fps (NTSC video)
and highest video recording quality (D1 resolution of 704 x 480)
The estimated recording time on a 120GB HDD is about 92 hours with 30fps (NTSC video)
and highest video recording quality (D1 resolution of 704 x 480)