Seagate STM305004N1AAAS-RK DiamondMax 21 SATA Product Manual - Page 48
S.M.A.R.T. commands, Table 13
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4.3.3 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 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. 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 13: S.M.A.R.T. commands Code in features register D0H D2H D3H D4H D5H D6H D8H D9H DAH S.M.A.R.T. command S.M.A.R.T. Read Data S.M.A.R.T. Enable/Disable Attribute Autosave S.M.A.R.T. Save Attribute Values S.M.A.R.T. Execute Off-line Immediate (runs DST) S.M.A.R.T. Read Log Sector S.M.A.R.T. Write Log Sector S.M.A.R.T. Enable Operations S.M.A.R.T. Disable Operations 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. 42 DiamondMax 21 Serial ATA Product Manual, Rev. C