[mythtv-users] Hitachi 3T drives - reliable?

[Joe Hickey]

On Thu, Jan 20, 2011 at 10:12 AM, Calvin Harrigan
<charriglists at bellsouth.net> wrote:
>> On 20 January 2011 13:49, Simon Hobson<linux at thehobsons.co.uk>  wrote:
>>
>>> For whatever reason, 2TB seems to be a common limit (I know it is in
>>> older
>>> versions of Windows). 2TB is 2^31 bytes, so the maximum value for a
>>> signed
>>> 32 bit integer.
>>
>> sure, but those are block devices. So the limitation is 2^31 sectors;
>> with 4kB sectors, you have a long way to go after 3TB no ?
>>
> Ummmm, isn't 2^31 = 2.14 billion there's about?  Not 2 trillion?


I'll second that -- calculation off by a factor of 1024.  2^31 is about 2GB.
BUT - there is a relationship if you consider 512 byte blocks.  In that case,
2^32 * 512 bytes == 2TB.

I'm not sure if that's a reason for the limitation or if it's just
pure coincidence.