OT: how many rankmount units is a tower-case

[Aryeh M. Friedman]

Glen Barber wrote:
> On Sun, Jan 4, 2009 at 8:21 AM, Aryeh M. Friedman
> <aryeh.friedman at gmail.com> wrote:
>   
>> I have a server that is a full tower case and want to co-locate it and
>> all the providers list pricing in rackmount units.... so what value of x
>> in xU should I get?
>>     
>
> When it comes to rackmounts, 1U = 1.75 inches.  2U would be 3.5
> inches, etc.  I'll let you do the measuring and math. ;)
>
>
>   
Small related question is there any long term harm to laying a disk on
it's side (i.e. it lays flat when the tower is up right but on it's side
squeezed into a rack)