how to known that harddisk is design "how many layer(s)/disc. ?

hi guys, do you known that "Harddisk drive" have "one disc/platters, double disc/platters or third disc/platters?

if choose harddisk, choose one disc/platters is good performance than third disc/platters?

also, how to known that harddisk is design "how many layer(s)/disc.
and Each disc/platters = GB size?
brosure found ?

or use some harddisk software to found I need (how many disc/platters) and each disc cap. ?GB

thanks!

 

thanks, some manufacturer's web site not said this harddisk use that
platters.

 

Curious, why do you need to know this information? As Pete said, the number of platters is not important to the user, or the operating system, or even the file system. You cannot manipulate or access by platter the data on the individual platters. That's why that information is often not published on websites. So, I think there may be some confusion that perhaps we can clear up.