Hitachi ic35l060avv207-0 - Deskstar 60 GB Hard Drive Specifications page 207

Operations command will be preserved in the Attribute Data Sectors of the device. If the device is
re-enabled, these Attribute Values will be updated as needed upon receipt of a SMART Read Attribute
Values or SMART Save Attribute Values command.
11.42.1.10 SMART Return Status (Subcommand DAh)
This command is used to communicate the reliability status of the device upon the request of the host.
Upon receipt of the SMART Return Status subcommand the device saves any updated Pre-failure type
Attribute Values to the reserved sector and compares the updated Attribute Values to the Attribute
Thresholds.
If the device does not detect a Threshold Exceeded Condition, the device loads 4Fh into the Cylinder Low
register and C2h into the Cylinder High register.
If the device detects a Threshold Exceeded Condition, the device loads F4h into the Cylinder Low register
and 2Ch into the Cylinder High register.
11.42.1.11 SMART Enable/Disable Automatic Off-line (Subcommand DBh)
This subcommand enables and disables the optional feature that causes the device to perform the set of
off-line data collection activities that automatically collect attribute data in an off-line mode and then saves
this data to the nonvolatile memory of the device. This subcommand may either cause the device to auto-
matically initiate or resume performance of its off-line data collection activities or cause the Automatic
Off-line Data Collection feature to be disabled.
A value of zero written by the host into the Sector Count register of the device before issuing this sub-
command causes the feature to be disabled. Disabling this feature does not preclude the device from
saving attribute values to nonvolatile memory during some other normal operation such as during a
power-on or power-off sequence or during an error recovery sequence.
A value of F8h written by the host into the Sector Count register of the device before issuing this sub-
command causes this feature to be enabled. Any other nonzero value written by the host into this register
before issuing this subcommand is vender specific and does not change the current Automatic Off-line
Data Collection status, but the device may respond with the error code specified in Figure 169 on page
204.
Deskstar 180GXP hard disk drive specifications
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