Commands (B0 H ) - Seagate Medalist 2520 Product Manual

Medalist 2520 Product Manual, Rev. A
You can disable the write reallocation, in addition to write cache by using
the Set Feature command Disable Write Cache, feature value 82
feature is not implemented for the Write Long command.
3.2.6 S.M.A.R.T. commands (B0
Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.) is an
emerging technology that provides near-term failure prediction for disc
drives. When S.M.A.R.T. is enabled, the Seagate drive monitors prede-
termined attributes within itself that are susceptible to degradation over
time. S.M.A.R.T. makes a status report available so that the host can
prompt the user to back up the drive if self-monitoring determines that a
failure is likely. Not all failures are predictable. S.M.A.R.T. predictability
is limited to only attributes that the drive can monitor.
The S.M.A.R.T. feature is disabled at the factory. You must have a BIOS,
software driver or application software 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 Seagate drives use.
Note. To implement a S.M.A.R.T. command, the host must write 0x4F
to Cylinder_lo register, 0xC2 to the Cylinder_hi register,
S.M.A.R.T. opcode to the Features register, and B0
Command register. If these values are not included with the
command code, the command is aborted and 0x04 (abort) is
written to the Error register.
Command code Feature description
Return drive attributes
D0
H
Return S.M.A.R.T. status
DA
H
Read Warranty Failure Threshold
D1
H
Enable/Disable Attribute Autosave
D2
H
Write current attribute values to disk
D3
H
Collect off line data
D4
H
Write Warranty Failure Threshold
D7
H
Enable Failure Prediction Operation
D8
H
Disable operation
D9
H
Enable/Disable Automatic off-line data collection
DB
H
This
H.
)
H
to the
H
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