Question: Most of 1TB Hard disks run as 7200 RPM recently.But why 2TB is not? Few disks have a 7200 rpm specification.Is there a technical reason?
Answer: It’s not just a simple matter of putting a faster motor in. ?I think that because 2TB drives have an even higher areal density, more advanced silicon is needed to process the data at such high speeds. ?Also, with the increased areal density, data is physically being read faster anyway.
It looks like the 7,200rpm drives have 4 or 5 platters and were made with older technology. ?The new 3 platter 2TB drives step up the areal density, and slow the spindle speed. ?As the silicon technology advances, they will speed up to 7,200rpm again, and then add more platters to increase storage, and then increase areal density and slow down the spindles, and so on…