10.8.42.11 SMART Enable/Disable Automatic Off-line

COMMAND CODE

 

1 0 1 1 0 0 0 0

REGISTER

 

REGISTER SETTING

NORMAL COMPLETION

DR

 

DRIVE No.

no change

CY

 

 

C24Fh

no change

HD

 

 

 

no change

SN

 

 

 

no change

SC

 

00h/F8h

no change

FT

 

 

DBh

no change

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 save this data to the device’s non-volatile memory. This subcommand may either cause the device automatically initiate or resume performance of its off-line data collection activities; or this command may cause the automatic off-line data collection feature to be disabled.

A value of zero written by the host into the device’s Sector Count register before issuing this subcommand will cause the feature to be disabled. Disabling this feature does not preclude the device from saving attribute values to non-volatile 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 device’s Sector Count register before issuing this command will cause this feature to be enabled. Any other non-zero value written by the host into this register before issuing this subcommand is vendor specific.

Automatic off-line data collection is executed every 24 power-on hours.

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