DVDs have a much higher data density so naturally you can record more while travelling at the same speed ( whether you actually can spin and record reliably while spinning at the same speed may be a different matter ).
32.
The Armonk, N . Y .-based company is expected to announce Monday that it is the first company to mass-produce computer hard disk drives using a new type of magnetic coating, achieving levels of data density previously thought to be impossible.
33.
:Original poster, I hope you realize that, as data densities increase, transfer rates increase also at any given rotation rate, so a 5400 rpm drive with a higher density platter can easily be faster than a 7200 rpm drive with a lower density platter.
34.
In May 2014 Fujifilm followed Sony and made an announcement that it will develop a 154 TB tape cartridge by the end of 2015, which will have the areal data density of storing 85.9 Gbit / in?( 13.3 Gbit / cm?) on linear magnetic particulate tape.
