40 Barracuda SATA Product Manual, Rev. B
Serial ATA (SATA) Interface www.seagate.com
4.3.3 S.M.A.R.T. commands
S.M.A.R.T. provides near-term failure prediction for disk drives. When S.M.A.R.T. is enabled, the drive monitors
predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines that a
failure is likely, S.M.A.R.T. makes a status report available to the host. Not all failures are predictable. S.M.A.R.T.
predictability is limited to the attributes the drive can monitor. For more information on S.M.A.R.T. commands and
implementation, see the Draft ATA-5 Standa rd.
SeaTools diagnostic software activates a built-in drive self-test (DST S.M.A.R.T. command for D4H) that eliminates
unnecessary drive returns. The diagnostic software ships with all new drives and is also available at:
http://seatools.seagate.com.
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 this feature. The table below shows the S.M.A.R.T. command codes that the drive
uses.
Code in features register S.M.A.R.T. command
D0HS.M.A.R.T. Read Data
D2HS.M.A.R.T. Enable/Disable Attribute Autosave
D3HS.M.A.R.T. Save Attribute Values
D4HS.M.A.R.T. Execute Off-line Immediate (runs DST)
D5HS.M.A.R.T. Read Log Sector
D6HS.M.A.R.T. Write Log Sector
D8HS.M.A.R.T. Enable Operations
D9HS.M.A.R.T. Disable Operations
DAHS.M.A.R.T. Return Status
Note If an appropriate code is not written to the Features Register, the command is aborted and
0x 04 (abort) is written to the Error register.