Seagate 40 GB 5800rpm Ultra ATA/100 ST340015ACE ユーザーズマニュアル

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 imple-
mentation, see the 

Draft ATA-7 Standard.

SeaTools diagnostic software activates a built-in drive self-test (DST S.M.A.R.T.
command for D4

H

) 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 enabled. You must have a recent
BIOS or software package that supports S.M.A.R.T. to use this feature. The
table below shows the S.M.A.R.T. command codes that the drive supports.

If an appropriate code is not written to the Features Register, the
command is aborted and 0

x04 (abort) is written to the Error register.

D0

H

S.M.A.R.T. Read Data

D1

H

Vendor-specific

D2

H

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

D3

H

S.M.A.R.T. Save Attribute Values

D4

H

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

D5

H

S.M.A.R.T. Read Log Sector

D6

H

S.M.A.R.T. Write Log Sector

D7

H

Vendor-specific

D8

H

S.M.A.R.T. Enable Operations

D9

H

S.M.A.R.T. Disable Operations

DA

H

S.M.A.R.T. Return Status