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3.2.4 S.M.A.R.T. commands
Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.) is an
emerging technology that provides near-term failure prediction for disc
drives. When S.M.A.R.T. is enabled, the Seagate drive monitors prede-
termined drive attributes that are susceptible to degradation over time. If
a failure is likely to occur, S.M.A.R.T. makes a status report available so
that the host can prompt the user to back up data on the drive. Not all
failures are predictable. S.M.A.R.T. predictability is limited to the attrib-
utes the drive can monitor. For more information on S.M.A.R.T. com-
mands and implementation, see the
Draft
Proposed ATA-3 Standard.
This drive is shipped with S.M.A.R.T. features disabled. You must have
a recent BIOS or software package that supports S.M.A.R.T. to enable
the feature. The table below shows the S.M.A.R.T. command codes that
these drives use.
Before executing a S.M.A.R.T. command by writing B0
H
to the Command
Register, the host must do the following:
• Write the value 4F
H
to Cylinder_Low register.
• Write the value C2
H
to the Cylinder_High register.
• Write the appropriate S.M.A.R.T. code to the Features register, as
shown in the table below:
Code in
Features
Register S.M.A.R.T. Command
Supported by
Medalist 3240 and
Medalist 2531
D0
H
Enable/Disable Attribute Autosave Yes
D1
H
Enable S.M.A.R.T. Operations Yes
D2
H
Enable/Disable Attribute Autosave Yes
D3
H
Save Attribute Values Yes
D4
H
Execute Off-line Immediate Yes
D7
H
Write Warranty Threshold Yes
D8
H
Enable S.M.A.R.T. Operations Yes
D9
H
Disable S.M.A.R.T. Operations Yes
DA
H
Return S.M.A.R.T. Status Yes
Medalist 3240 and Medalist 2531 Product Manual, Rev. A 29