Cylinders on single platter hard drives

Trismagia

Honorable
Oct 28, 2013
3
0
10,510
Hello everyone. I have a question regarding cylinders on a hard drive. Hard drives that have just one platter... they have cylinders? cylinders only make sense when there are at least two platters? or it has to do with the number of heads?.

Thanks.
 
Solution


I applied a small edit in my original post.

A cylinder is defined by the heads; there are 2 heads per platter.

There is a cylinder between the 2 heads only very, very thin.

Cylinder = SPT x H but of course if it were a one headed...

Trismagia

Honorable
Oct 28, 2013
3
0
10,510


Hi, well... as I see... tracks and cylinders are not the same thing. Cylinders are three-dimensional but it has no sense when considering a single plate HD. Thanks :)
 

Trent Quan-Sing

Honorable
Jun 5, 2013
75
0
10,660


I applied a small edit in my original post.

A cylinder is defined by the heads; there are 2 heads per platter.

There is a cylinder between the 2 heads only very, very thin.

Cylinder = SPT x H but of course if it were a one headed platter (unlikely) then it cant be a cylinder by definition because it is then a circle.

And even then a physicist would dispute it as a cylinder because circles only exist in a world made of 2D objects and this is real life.

360px-Cylinder_Head_Sector.svg.png


Courtesy 'Wikipedia'.
 
Solution