Smart (B0H); Smart Disable Operations (D9H); Smart Enable/Disable Attribute Auto-Save (D2H); Table 8-14 Smart Feature Registers Values - Seagate Spinpoint M8 Product Manual

8.2.34 SMART (B0h)

Individual SMART commands are identified by the value placed in the Feature resister. Below depicts these
Feature register values.
Feature Value
D0h
D1h
D2h
D3h
D4h
D5h
D6h
D7h
D8h
D9h
DAh
DBh
DCh-DDh
DEh
DFh
8.2.34.1

Smart disable operations (D9h)

This command disables all SMART capabilities within the device including any timer and event count
functions related to this feature. After receipt of this command the device shall disable all SMART operations.
SMART data shall no longer be monitored or saved by the device. The state of SMART (either enabled or
disabled) shall be preserved by the device across power cycles.
After receipt of this command by the device, all other SMART commands (including SMART DISABLE
OPERATIONS commands), with the exception of SMART ENABLE OPERATIONS, are disabled and
invalid and shall be command aborted by the device.
8.2.34.2

Smart enable/disable attribute auto-save (D2h)

This command enables and disables the optional attribute auto-save feature of the device. Depending upon
the implementation, this command may either allow the device, after some vendor specified event, to
automatically save its updated attribute values to non-volatile memory; or this command may cause the auto-
save feature to be disabled. The state of the attribute auto-save feature (either enabled or disabled), shall be
preserved by the device across power cycles.
A value of zero written by the host into the device's Sector Count register before issuing this command shall
cause this feature to be disabled. Disabling this feature does not preclude the device from saving SMART
data to non-volatile memory during some other normal operation such as during a power-on sequence or
during an error recovery sequence.
Spinpoint M8 Product Manual REV 2.6

Table 8-14 SMART Feature Registers Values

SMART READ DATA
Obsolete (SMART Read Threshold)
SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE
Obsolete (SMART Save Attribute Value)
SMART EXECUTE OFF-LINE IMMEDIATE
SMART READ LOG SECTOR
SMART WRITE LOG SECTOR
SMART ENABLE OPERATIONS
SMART DISABLE OPERATIONS
SMART RETURN STATUS
Obsolete (Enable/Disable Auto Offline Scan)
Reserved
Command
Obsolete
Reserved
Reserved
64