Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
342
21.8
Ports
The ports capability is an HGST feature which is not a requirement under TCG Enterprise SSC. In order to use the
ports capabilities on encryption drives, the user must successfully authenticate. Once a user successfully
authenticates, they may change the state of any of the ports at any time during an active session to either the locked
or unlocked state. The functionality and definition of these ports is shown below in a table.
The feature does make use of the TCG structures and tables. An additional table, the ports table, has been
implemented, and additional entries were made to the Admin SP ACE table and the Admin SP AccessControl Table.
The ports table and the modified TCG SSC tables are shown below
Table 292 Ports Functionality
Port Name
Description
Firmware Download This port has 2 valid states: locked and unlocked.
On encryption drives, the download port is unlocked initially, Lock On
Reset is "Null".
Code can be downloaded onto the drive after the signature is successfully verifi
ed. If the
signature cannot be verified successfully, no firmware can be downloaded to the drive. The
user can change the state of the firmware download port only after authentication.
On non-encryption drives, this port will be set to unlocked at the fac
tory, and the state
cannot be changed by the user. Firmware will be downloaded to the non-
encryption drive
through this port without verification of the signature.
Diagnostics This port has 2 valid states: locked and unlocked. This port allows HGST ac
cess to
modify any TCG table or key. In order to open this port both the SID and the Maker
authorities need to be authenticated. The purpose of this port is to aid HGST in debugging
Table 293 Ports Table
UID
Name
LocOnReset
PortLocked
00 01 00 02 00 01 00 02 Firmware_Dload_Port Null FALSE
00 01 00 02 00 01 00 01 Diagnostic_Port PowerCycle TRUE