Admin: TB and “guessed” $/TB(does not include cost of application, overhead, not “substance”)
 
 
Google:	1 :100TB		  5k$/TB/y
Yahoo!	1 :  50TB  		20k$/TB/y
Wall St.	1 :    1TB         400k$/TB/y (reported)
hardware dominant cost only @ Google.
How can we waste hardware to save people cost?