Dell PowerEdge RAID Controller 12 User’s Guide PERC H965i Adapter, PERC H965i Front, PERC H965i MX, and PERC H965e Adapter

The Physical disk erase feature allows data that is saved on disks to be securely erased so that data cannot be recovered. The PERC 12 series controllers provide four methods for erasing disks—Physical Disk Erase, Cryptographic Erase, Sanitize Block Erase, and Sanitize Overwrite.

• Physical disk erase—Erases drives by writing data pattern on disks with varying number of passes. Physical disk erase is supported on non-ISE and non-SEDs.
• Cryptographic Erase—Cryptographically erases disks by changing the media encryption key. This feature is supported on ISE or SEDs. In case of SEDs, unsecures the drives and reverts them to factory security settings. See Instant Secure Erase and Self-Encrypting Drives (SEDs).
• Sanitize Block Erase—Alters information by setting the physical blocks to a vendor specific value.
• Sanitize Overwrite Erase—Alters information by setting physical blocks to a user-specific value. Also, it can do multiple overwrite operations and invert the pattern between consecutive overwrite passes.