An IS department in a major public university records the lectures for 10 of its classes for video streaming to its partner universities in India and China. Each twice-weekly lecture runs for 1.25 hours and a semester is 15 weeks long. A video streaming expert estimates that one minute of digital video requires 6.5 Mbytes using MPEG-4 and Apple's QuickTime software. What is MPEG-4? Calculate how much storage space will be required and recommend a storage device for the department.
MPEG-4 definition
| Semester | 15 weeks |
| Classes | 10 per week |
| Lecture length | 1.25 hours per class |
| Lectures | 2 per class per week |
| Video storage | 6.5 Mbytes per minute |
| Lecture hours | 15*10*1.25*2 |
| Lecture minutes | 15*10*1.25*2*60 |
| Mbytes | 15*10*1.25*2*60*6.5 |
| Gbytes | 15*10*1.25*2*60*6.5/1000 |
| Gbytes | 146.25 |
RAID-1 because of the likely high number of reads compared to writes once the data are loaded.
This page is part of the promotional and support material for Data Management (open edition) by Richard T. Watson |