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Western Digital Hard Disk Drive OEM Specification
Figure 14 Sanitize Device state machines
9.20.3.2
SD1: Sanitize Frozen State
In SD1: Sanitize Frozen state, the device will abort Sanitize operation commands.
While in this state, Sanitize Device state machine does not change state if the device processes a SANITIZE
STATUS EXT command.
Transition SD1:SD0:
If the device processes a hardware reset or a power-on reset, then the device transitions to
the SD0: Sanitize Idle state.
9.20.3.3
SD2: Sanitize Operation State
In the SD2: Sanitize Operation state, the device is processing a sanitize operation.
While in this state, Sanitize Device state machine does not change state if the device processes:
a)
a hardware reset or power-on reset; and
b)
a SANITIZE STATUS EXT command.
Transition SD2:SD3:
If a sanitize operation completes with an error, then the device transitions to the SD3: Sanitize
Operation Failed state.
Transition SD2:SD4:
If a sanitize operation completes without an error, then the device transitions to the SD4:
Sanitize Operation Succeeded state.
9.20.3.4
SD3: Sanitize Operation Failed State
In the SD3: Sanitize Operation Failed state, the device has completed processing a sanitize operation without
success.
While in this state, Sanitize Device state machine does not change state if the device processes:
a)
a hardware reset or power-on reset; and
b)
a SANITIZE STATUS EXT command with the CLEAR SANITIZE OPERATION FAILED bit cleared to zero.
Transition SD3:SD0:
If
a)
the Sanitize operation was initiated by a Sanitize operation command with the FAILURE MODE bit set to
one; and
b)
the SANITIZE STATUS EXT command has been successfully processed with the CLEAR SANITIZE
OPERATION FAILED bit set to one,
then the device transitions to the SD0: Sanitize Idle state.
Transition SD3:SD2:
If the device processes a supported sanitize operation command that reports command
completion with no error, then the device transitions to the SD2: Sanitize Operation state.
9.20.3.5
SD4: Sanitize Operation Succeeded State
In the SD4: Sanitize Operation Succeeded state, the device has completed processing a successful sanitize
operation.
Transition SD4:SD0:
If the device processes
a)
a hardware reset;
b)
a power-on reset; or
c)
a SANITIZE STATUS EXT command
then the device transitions to the SD0: Sanitize Idle state.
Transition SD4:SD2:
If the device successfully processes a supported Sanitize operation command, then the
device transitions to the SD2: Sanitize Operation state.
