Invisible wrote:
>>   I'm wondering if 15 years from now we will be using files of that size.
> 2^40 = 1 TB (we are here already)

I don't think in one *file*.  One file system, perhaps.

> 2^50 = 1 PB (never yet heard of anybody except huge corporations 
> reaching this)

Amazon has special rates if you're storing more than 5 PB, so it seems 
someone is.

> I wonder how much data you can physically store in a given volume using 
> purely magnetic technologies?

Depends how you define "volume".  Think of the Google File System, spread 
over lots and lots of disks.

-- 
Darren New, San Diego CA, USA (PST)
   Human nature dictates that toothpaste tubes spend
   much longer being almost empty than almost full.

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