Seagate ST4000VM000 manual A.R.T. commands, Code in features register A.R.T. command

Serial ATA Interface				www.seagate.com
Table 10 Set Features command values (continued)
07H		07H PUIS feature set device spin-up
10H		Enable use of SATA features
55H		Disable read look-ahead (read cache) feature.
82H		Disable write cache.
86H		Disable the PUIS feature set.
90H		Disable use of SATA features.
AAH		Enable read look-ahead (read cache) feature (default).
F1H		Report full capacity available.
Note			At power-on, or after a hardware or software reset, the default values of the features are as indicated above.
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 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. 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.

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.

38 Video 3.5 HDD Product Manual, Rev. H