HGST Ultrastar 7K4000 (SAS) Hard Disk Drive Specification
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21.13.2 TCG SSC Commands
The table below describes how the required TCG Enterprise SSC commands behave on encryption drives in the locked and
unlocked states. The TCG SSC requires the implementation of the Base, Admin, Locking, and Crypto Templates. As noted,
the Crypto template was not implemented. In addition the SSC does not require any Admin Template tables or methods, so
VERIFY (12) - (AF)
OEM Command access denied if the effective range is locked.
VERIFY (16) - (8F)
OEM Command access denied if the effective range is locked.
VERIFY (32) - (7F/0A)
OEM Command access denied if the effective range is locked.
WRITE (6) - (0A)
OEM Command access denied if the effective range is locked.
WRITE (10) - (2A)
OEM Command access denied if the effective range is locked.
WRITE (12) - (AA)
OEM Command access denied if the effective range is locked.
WRITE (16) - (8A)
OEM Command access denied if the effective range is locked.
WRITE (32) - (7F/0B)
OEM Command access denied if the effective range is locked.
WRITE AND VERIFY (10) - (2E)
OEM Command access denied if the effective range is locked.
WRITE AND VERIFY (12) - (AE)
OEM Command access denied if the effective range is locked.
WRITE AND VERIFY (16) - (8E)
OEM Command access denied if the effective range is locked.
WRITE AND VERIFY (32) - (7F/0C)
OEM Command access denied if the effective range is locked.
WRITE BUFFER (3B)
(T10)
OEM (write
DRAM onto
drive)
OEM.
WRITE BUFFER (3B)
(For FW download)
FW is signed
and
downloaded.
OEM. The write buffer command only functions to write to the
buffer.
WRITE LONG (3F)
OEM Per TCG and T10 specification. Ent_A authorized only.
WRITE SAME (41)
OEM Ent_A authorized only
WRITE SAME (16) - (93)
OEM Ent_A authorized only
WRITE SAME (32) - (7F/0D)
OEM Ent_A authorized only
SECURITY_IN OEM Per TCG spec. Contains TCG payload.
SECURITY_OUT OEM Per TCG spec. Contains TCG payload.
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