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34
3.2.3 Standby timer timeout period
The Idle command and Standby command Sector Count registers are
used to activate the Standby timer. The host can enable the Standby
timer by placing a value in the sector-count register of the Idle command
or Standby command. The value corresponds to a predetermined period
of drive inactivity. The table below lists the values the Seagate drive uses
and their corresponding timeout period.
Sector Count Register contents
0 (0
)
H
1–12 (1
–C
)
H
H
13–240 (D
–F0
)
H
H
241–251 (F1
–FB
)
H
H
252 (FC
)
H
253 (FD
)
H
254 (FE
)
H
255 (FF
)
H
The drives are shipped with the Standby timer disabled.
3.2.4 Sleep command (99
The drive enters sleep mode after receiving a Sleep immediate command
from the host. The heads are parked and the the spindle is at rest. The
drive leaves Sleep mode after it receives a Hard Reset or Soft Reset from
the host. After receiving the reset, the drive exits Sleep mode and enters
Idle mode with all current emulation and translation parameters intact.
3.2.5 Automatic reallocation
This feature allows the drive to identify grown media defects and to
reallocate the sector without host intervention using both read and write
automatic reallocation.
You can disable read reallocation by using the Set Features command
Disable Read Automatic Reallocation, feature value 84
not used for the Read Long command.
Medalist 2520 Product Manual, Rev. A
Corresponding timeout period
Timeout disabled
value = 60 seconds
(value * 5) seconds
(value – 240 * 30) minutes
21 minutes
8 hours
Reserved
21 minutes 15 seconds
, E6
)
H
H
. This feature is
H
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