Seagate Medalist ST3636A Product Manual page 75

Command Set
Technical Reference Manual
Code
(hex) Subcommand
Enable/Disable Attribute Autosave enables and disables the
D2
Attribute AutoSave feature of the device. This feature is automatically
enabled when S.M.A.R.T. is enabled. Enable/Disable Attribute
Autosave may be set to automatically save its updated Attribute
Values to non-volatile memory periodically ; or this subcommand may
be used to disable the AutoSave feature. The state of the Attribute
AutoSave feature (either enabled or disabled) will be preserved by the
device across power cycles.
A value of zero written by the host into the drive's Sector Count
register before issuing the Enable/Disable Attribute Autosave
subcommand will cause this feature to be disabled. A value of F1
written by the host into the device's Sector Count register before
issuing the Enable/Disable Attribute Autosave subcommand will
cause this feature to be enabled.
Upon receipt of the subcommand from the host, the device asserts
BSY, enables or disables the AutoSave feature (depending upon
Sector Count ), clears BSY and activates IRQ.
During execution of its AutoSave routine the device does not set BSY
nor clear DRDY. If the device receives a command from the host
while executing its AutoSave routine it will respond to the host within
two seconds.
Save Attribute Values causes the drive to immediately save any
D3
updated Attribute Values to the drive's non-volatile memory. Upon
receipt of this subcommand from the host, the drive asserts BSY,
writes any updated Attribute Values to non-volatile memory, clears
BSY and asserts INTRQ.
Reserved
D4 - D6
Vendor Specific
D7
Enable S.M.A.R.T. Operations enables access to all S.M.A.R.T.
D8
capabilities within the drive. Prior to receipt of an Enable Smart
Operations subcommand Attribute Values are neither monitored nor
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. Once
enabled, the receipt of subsequent Enable Smart Operations
subcommands shall not affect any of the Attribute Values.
Upon receipt of this subcommand from the host, the drive asserts
BSY, enables S.M.A.R.T. capabilities and functions, clears BSY and
asserts INTRQ.
Chapter 7
H
Page 63