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8.7
A
UTHENTICATED FIRMWARE DOWNLOAD
In addition to providing a locking mechanism to prevent unwanted firmware download attempts, the drive also only accepts
download files which have been cryptographically signed by the appropriate Seagate Design Center.
Three conditions must be met before the drive will allow the download operation:
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 appli-
cable to the correct drive model, and have compatible revision and customer status.
8.8
P
OWER 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 6.3 for power requirements on the standard (non-SED) drive models.
8.9
S
UPPORTED 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 9:
• Security Protocol Out (B5h)
• Security Protocol In (A2h)
8.10
S
- CRYPTOGRAPHIC ERASE
ANITIZE
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 CRYPTOGRAPHIC ERASE is a SCSI
CDB Op code 48h and selecting the service action code 3 (CRYPTOGRAPHIC ERASE)
8.11
R
SP
EVERT
The SED models will support RevertSP feature where it 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 barcode.
S
10K.5 SAS P
AVVIO
RODUCT
M
, R
. J
ANUAL
EV
41
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