It’s been said that airplanes magically turn money into noise. In a similar way, it can be stated that disk storage turns money into heat. In both cases, benefits like fast, reliable transportation and fast random data access accrue as the result of said magic. Unfortunately, it also means a LOT of money may be involved yielding a lot of noise and heat respectively.
Setting aside the airplane analogy to concentrate on the conversion of money into heat through spinning disk over the long run, what can a storage administrator or CIO due to mitigate the cost of this magical transformation? The answer to reducing the budget in various cases is tape storage.