From Slashdot, I learned that for $3k, one can buy a 1.6TB hard drive similar to normal PC hard drives:
IO Data Device’s new ‘HDZ-UE1.6TS’ exemplifies the recent trend towards demand for higher storage capacities — it’s an external hard drive setup offering a total capacity of 1.6TB. Not much larger than four 3.5″ hard drives, the HDZ-UE1.6TS goes to show that any (rich) consumer can now easily have a boatload of storage space. (At current conversion rates, this would cost nearly $2,900.)
Maybe $3k seems like a lot but I bet that in 5 years, these beasts will cost under $1k and fit inside a normal PC.
The consequences of so much storage (nearly infinite) are still not well understood, but I believe it could bring about new killer applications we can’t even imagine right now.