If the disk has built in encryption, so the storage controller on the disk handles the encrypt/decrypt cycle but presents as an unencrypted disk for all intents and purposes to the user. All thats needed to wipe the disk is to delete the encryption keys. Its a pretty common feature in enterprise disks and i quite like it. Saves a lot of time when decom time rolls arround
If the disk has built in encryption, so the storage controller on the disk handles the encrypt/decrypt cycle but presents as an unencrypted disk for all intents and purposes to the user. All thats needed to wipe the disk is to delete the encryption keys. Its a pretty common feature in enterprise disks and i quite like it. Saves a lot of time when decom time rolls arround