Seagate BarraCuda Product Manual, Rev. A

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SATA Interface

5.3.3 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 Standard.

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. Users 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.

Table 11 S.M.A.R.T. commands

Code in features register

S.M.A.R.T. command

D0H

S.M.A.R.T. Read Data

D2H

S.M.A.R.T. Enable/Disable Attribute Autosave

D3H

S.M.A.R.T. Save Attribute Values

D4H

S.M.A.R.T. Execute Off-line Immediate (runs DST)

D5H

S.M.A.R.T. Read Log Sector

D6H

S.M.A.R.T. Write Log Sector

D8H

S.M.A.R.T. Enable Operations

D9H

S.M.A.R.T. Disable Operations

DAH

S.M.A.R.T. Return Status

Note

If an appropriate code is not written to the Features Register, the

command is aborted and 0x04 (abort) is written to the Error register.