Power Requirements; Supported Commands; Revertsp; Ata Security Erase Unit Command On Sed Sata Drives - Seagate Constellation ES Product Manual

1. The download must be an SED file. A standard (base) drive (non-SED) file will be rejected.
2. The download file must be signed and authenticated.
3. As with a non-SED drive, the download file must pass the acceptance criteria for the drive. For example it
must be applicable to the correct drive model, and have compatible revision and customer status.
5.8

Power requirements

The standard drive models and the SED drive models have identical hardware, however the security and
encryption portion of the drive controller ASIC is enabled and functional in the SED models. This represents a
small additional drain on the 5V supply of about 30mA and a commensurate increase of about 150mW in
power consumption. There is no additional drain on the 12V supply. See the tables in Section 2.8 for power
requirements on the standard (non-SED) drive models.
5.9

Supported commands

The SED models support the following two commands in addition to the commands supported by the standard
(non-SED) models as listed in Table 8:
• Trusted Send (5Eh) or Trusted Send DMA (5Fh)
• Trusted Receive (5Ch) or Trusted Receive DMA (5Dh)
5.10

RevertSP

SED models will support the RevertSP feature which erases all data in all bands on the device and returns the
contents of all SPs (Security Providers) on the device to their original factory state. In order to execute the
RevertSP method the unique PSID (Physical Secure ID) printed on the drive label must be provided. PSID is
not electronically accessible and can only be manually read from the drive label or scanned in via the 2D bar-
code.
5.11

ATA Security Erase Unit Command on SED SATA drives

The ATA SECURITY ERASE UNIT command shall support both the Normal and Enhanced erase modes with
the following modifications/additions:
• Normal Erase: Normal erase shall be accomplished by changing the media encryption key for the drive fol-
lowed by an overwrite operation that repeatedly writes a single sector containing random data to the entire
drive. The write operation shall bypass the media encryption. On reading back the overwritten sectors, the
host will receive a decrypted version, using the new encryption key, of the random data sector (the returned
data will not match what was written).
• Enhanced Erase: Enhanced erase shall be accomplished by changing the media encryption key for the
drive.
5.12

Sanitize Device - CRYPTO SCRAMBLE EXT

This command cryptographically erases all user data on the drive by destroying the current data encryption key
and replacing it with a new data encryption key randomly generated by the drive. Sanitize Device is a com-
mand field B4h and Feature field 0011h (CRYPTO SCRAMBLE EXT).
The drive shall support the Sanitize Feature Set as defined in ANSI/INCITS ACS-2 with the exceptions and/or
modifications described in this section.
The drive shall not support the OVERWRITE EXT and BLOCK ERASE EXT sub-commands.
Support of the SANITIZE FREEZE LOCK EXT command shall be determined on a customer-specific basis.
OEM drives shall support the command.
Constellation ES Serial ATA Product Manual, Rev. D 33