Commands - Seagate ST317221A Product Manual

30
40 Ultra DMA mode 0
H
41 Ultra DMA mode 1
H
42 Ultra DMA mode 2
H
43 Ultra DMA mode 3
H
44 Ultra DMA mode 4
H
05 Enable advanced power management.
H
55 Disable read look-ahead (read cache) feature.
H
82 Disable write cache.
H
AA Enable read look-ahead (read cache) feature (default).
H
Note. At power-on, or after a hardware or software reset, the default
values of the features are as indicated above.
3.1.4 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 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.
Code in Features S.M.A.R.T. Command
Register
D0 S.M.A.R.T. Read Data
H
D1 Obsolete
H
D2 S.M.A.R.T. Enable/Disable Attribute Autosave
H
D3 S.M.A.R.T. Save Attribute Values
H
D4 S.M.A.R.T. Execute Off-line Immediate
H
D5 S.M.A.R.T. Read Log Sector
H
U8 Family Product Manual, Rev. A