U Series CE Family Product Manual, Rev. A 31
3.1.4 S.M.A.R.T. commands
S.M.A.R.T. provides near-term failure prediction for disc 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 det ermines
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. pred ictabilit y is limited t o
the attributes the drive can monitor. For more information on S.M.A.R.T.
commands and implementation, see the

Draft

ATA-Rev 6 Standard.

SeaTools diagnostic software activa tes a built-in drive self-test (DST)
S.M.A.R.T. command for D4H that eliminates unnecessary dr i ve r et urns .
The diagnostic software ships with all new driv es 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.
Note. If an appropriate code is not written to the Features Regist er, the
command is aborted and 0x04 (abort) is written to the Error
register.
Code in Features
Register S.M.A.R.T. Command
D0HS.M.A.R.T. Read Data
D1HObsolete
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
D7HObsolete
D8HS.M.A.R.T. Enable Operations
D9HS.M.A.R.T. Disable Operations
DAHS.M.A.R.T. Return Status