Subcommand - Hitachi ic35l060avv207-0 - Deskstar 60 GB Hard Drive Specifications

11.42.1 S.M.A.R.T. Subcommand
In order to select a subcommand the host must write the subcommand code to the Features Register of
the device before issuing the S.M.A.R.T. Function Set command. The subcommands and their respective
codes are listed below.
Code
D0h
D1h
D2h
D3h
D4h
D5h
D6h
D8h
D9h
DAh
DBh
11.42.1.1 SMART Read Attribute Values (Subcommand D0h)
This subcommand returns the Attribute Values of the device to the host. Upon receipt of the SMART
Read Attribute Values subcommand from the host the device saves any updated Attribute Values to the
Attribute Data sectors and then transfers the 512 bytes of Attribute Value information to the host.
11.42.1.2 SMART Read Attribute Thresholds (Subcommand D1h)
This subcommand returns the Attribute Thresholds of the device to the host. Upon receipt of the SMART
Read Attribute Thresholds subcommand from the host, the device reads the Attribute Thresholds from
the Attribute Threshold sectors and then transfers the 512 bytes of Attribute Thresholds information to the
host.
11.42.1.3 SMART Enable/Disable Attribute Autosave (Subcommand D2h)
This subcommand enables and disables the Attribute Autosave feature of the device. The SMART
Enable/Disable Attribute Autosave subcommand either allows the device to automatically save its
updated Attribute Values to the Attribute Data Sector periodically or causes the Autosave feature to be
disabled. The state of the Attribute Autosave feature (either enabled or disabled) will be preserved by the
device across power cycle.
A value of 00h written by the host into the Sector Count Register of the device before issuing the SMART
Enable/Disable Attribute Autosave subcommand will cause this feature to be disabled. Disabling this
feature does not preclude the device from saving Attribute Values to the Attribute Data sectors during
another normal operation such as during a power-up or power-down.
A value of F1h written by the host into the Sector Count Register of the device before issuing the SMART
Enable/Disable Attribute Autosave subcommand will cause this feature to be enabled. Any other non-
zero value written by the host into this register before issuing the SMART Enable/Disable Attribute
Autosave subcommand will not change the current Autosave status but the device will respond with the
error code specified in Figure 169 on page 0.
The SMART Disable Operations subcommand disables the Autosave feature along with the SMART
operations of the device.

Subcommand

SMART Read Attribute Values
SMART Read Attribute Thresholds
SMART Enable/disable Attribute Autosave
SMART Save Attribute Values
SMART Execute Off-line Immediate
SMART Read Log Sector
SMART Write Log Sector
SMART Enable Operations
SMART Disable Operations
SMART Return Status
SMART Enable/Disable Automatic Off Line
Deskstar 180GXP hard disk drive specifications
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