[Nadya]

Anyone working with video, 3D animation, storing RAW photography (and taking 100's of photos on a daily basis), and I can imagine a few other purposes. Especially if you want an on-site backup of that data.

I've bought 10TB of storage space every year for the past 3 years and don't see myself stopping. I need the storage space! If these data-heavy hobbies were instead my daytime job I could easily see myself needing 100TB+ in storage (and then 100TB+ of backups). I fill roughly 8TB/year in storage space (4TB of data + 4TB backup data).

Some people believe in redundant backups. I only have redundant backups of extremely important information - which are mostly text documents so don't take up much space. But if someone was storing 3 copies of all of their media assets you end up using a lot of space. For example, 10TB of video turns into 30TB of video. And 180TB is really only 60TB of data, which isn't that much for data heavy hobbies.