Seagate Medalist ST3636A Product Manual page 76

Chapter 7
Page 64
Code
(hex) Subcommand
Disable S.M.A.R.T. Operations This subcommand disables all
D9
S.M.A.R.T. capabilities within the drive. After receipt of the Disable
Smart Operations subcommand the drive will disable all S.M.A.R.T.
operations. Attribute Values will no longer be monitored or saved by the
drive. The state of S.M.A.R.T. (either enabled or disabled) will be
preserved by the drive across power cycles.
Upon receipt of the Disable Smart Operations subcommand from the
host, the drive asserts BSY, disables S.M.A.R.T. capabilities and
functions, clears BSY and asserts INTRQ.
After receipt by the drive of the Disable Smart Operations sub-
command from the host, all other S.M.A.R.T. subcommands with the
exception of Enable Smart Operations subcommand are disabled and
invalid. They will be aborted by the drive (including the Disable Smart
Operations subcommand), returning the error code specified at the end
of this command description.
Any Attribute Values accumulated and saved to non-volatile memory
prior to receipt of the Disable Smart Operations command will be
preserved in the drive's non-volatile memory. If the drive is re-enabled,
these Attribute Values will be updated, as needed, upon receipt of a
Read Attribute Values or Save Attribute Values command.
Return S.M.A.R.T. Status is used to communicate the reliability status
DA
of the device to the host. Upon receipt of the Return S.M.A.R.T. Status
subcommand the device asserts BSY, saves any updated Attribute
Values to non-volatile memory and compares the updated Attribute
Values to the Attribute Thresholds and checks the Pre-Failure/Advisory
bit in the Status Flags.
If the device does not detect a Threshold Exceeded Condition, the
device loads 4F
High register, clears BSY, and activates +IRQ.
If the device does detect a Threshold Exceeded Condition, the device
loads F4 into the Cylinder Low register, 2C
H
register, clears BSY, and activates +IRQ.
DB - DF Reserved
E0 - EF Vendor Specific
into the Cylinder Low register, C2
H
ST3636A/ST31082A/ST31276A
Command Set
into the Cylinder
H
in the Cylinder High
H