StorageNewsletter reports that Apple has placed an order of 12 Petabytes of storage from Isilon Systems to support iTunes video offerings.

Apple ordered as much as 12PB of capacity from Isilon Systems, notably to manage the video download of its customers using iTunes, according to an inside source of the new division of EMC.

PetabyteImage via mozy.com 

This order will likely make Apple the largest Isilon Systems customer of all of their 181 customer.