It is estimated that 90% of hard drives are destroyed. Why aren't more wiped and reused?
Millions of storage devices are being shredded each year, even though they could be reused. "You don't need an engineering degree to understand that's a bad thing," says Jonmichael Hands.
Storage devices are typically sold with a five-year warranty, and large data centres retire them when the warranty expires. Drives that store less sensitive data are spared, but the CDI estimates that 90% of hard drives are destroyed when they are removed. The least secure method is "clear". All the data is deleted, but it could be recovered using specialist tools. It's good enough if you want to reuse the drive within your company.
By comparison a cryptographic erase takes just a couple of seconds. Many modern drives have built-in encryption, so that the data on them can only be read if you have the encryption key. If that key is deleted, all the data is scrambled. It's still there, but it's impossible to read. The drive is safe to resell.
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