3.2.4
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 deter-
mines 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-4 Stand-
ard.
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
the feature. The table below shows the S.M.A.R.T. command codes that
this drive uses.
Code in
Features
Register S.M.A.R.T. Command
Supported by
ST36540A,
ST35130A and
ST33220A
D0
H
S.M.A.R.T. Read Data
Yes
D1
H
Vendor-specific
Yes
D2
H
S.M.A.R.T. Enable/Disable Attribute
Autosave
Yes
D3
H
S.M.A.R.T. Save Attribute Values
Yes
D4
H
S.M.A.R.T. Execute Off-line Immediate
Yes
D7
H
Vendor-specific
Yes
D8
H
S.M.A.R.T. Enable Operations
Yes
D9
H
S.M.A.R.T. Disable Operations
Yes
DA
H
S.M.A.R.T. Return Status
Yes
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.
30
Medalist 6540, 5130 and 3220 Product Manual, Rev. A
