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StorageNewsletter.com reports that Apple has placed a order for about 12 petabytes of storage from Isilon Systems. According to an inside source, the company will use this storage to support iTunes video downloaded by its customers. This order will make Apple the largest Isilon’s customer.

A petabyte of data is a huge amount of data; it's 1024 terabytes. Consumer hard drives nowadays top out at 3 TB. If you tried to store a petabyte of data on dual-layer Blu-ray discs (50 GB each), it would take almost 21,000 discs to fit it all... and Apple just bought 12 of those. It'll be interesting to see what they do with all of that storage