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(nods) Where places have really serious storage needs, big IT uses refrigerator-sized units with many many hard drives in them. The biggest HP unit can hold 15 Petabytes.
A Petabyte is 1000 Terabytes. (A Terabyte is 1000 Gigabytes.) So one of these babies can hold like a couple thousand of our datas. It's configured by top pros and managed by top technicians. Connected with 10GB Ethernet across fiber switches.
When a hard drive dies, a notification goes out and someone just pulls out the bad drive and puts a new one in there, and the system senses the new drive and rebuilds the storage array automatically.
I'm pretty sure at least 10% of usage of this type of storage is for porn. When I worked for a company that used them (for audio), the sales guys from HP said their biggest customer was the big porn website in town.
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