Commands - Seagate Barracuda ATA III Family Product Manual

32 Barracuda ATA III Family Product Manual, Rev. B
09 PIO mode 1
H
0A PIO mode 2
H
0B PIO mode 3
H
PIO mode 4 (default)
0C
H
20 Multiword DMA mode 0
H
21 Multiword DMA mode 1
H
22 Multiword DMA mode 2
H
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
45 Ultra DMA mode 5
H
05 Enable advanced power management
H
42 Auto acoustic management
H
FE Performance seek
H
80 Quiet acoustic seek
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
F1 Report full capacity available
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.