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Travelstar 5K160 (SATA) Hard Disk Drive Specification
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12.8.6 S.M.A.R.T operation with power management modes
The device saves attribute values automatically on every head unload timing except the emergency
unload, even if the attribute auto save feature is not enabled. The head unload is done not only by
Standby, Standby Immediate, or Sleep command, but also by the automatic power saving functions
like ABLE-3 or Standby timer. So basically it is not necessary for a host system to enable the
attribute auto save feature, when it utilizes the power management. If the attribute auto save
feature is enabled, attribute values will be saved after 30minutes passed since the last saving,
besides above condition.
12.9 Security Mode Feature Set
Security Mode Feature Set is a powerful security feature. With a device lock password, a user can
prevent unauthorized access to hard disk device even if the device is removed from the computer.
New commands are supported for this feature as below.
Security Set Password
(‘F1’h)
Security Unlock
(‘F2’h)
Security Erase Prepare
(‘F3’h)
Security Erase Unit
(‘F4’h)
Security Freeze Lock
(‘F5’h)
Security Disable Password
(‘F6’h)
12.9.1 Security mode
Following security modes are provided.
Device Locked mode
The device disables media access commands after power on. Media access
commands are enabled by either a security unlock command or a security
erase unit command.
Device Unlocked mode
The device enables all commands. If a password is not set this mode is
entered after power on, otherwise it is entered by a security unlock or a
security erase unit command.
Device Frozen mode
The device enables all commands except those which can update the device
lock function, set/change password. The device enters this mode via a
Security Freeze Lock command. It cannot quit this mode until power off.
12.9.2 Security Level
Following security levels are provided.
High level security
When the device lock function is enabled and the User Password is
forgotten the device can be unlocked via a Master Password.
Maximum level security
When the device lock function is enabled and the User Password is
forgotten then only the Master Password with a Security Erase Unit
command can unlock the device. Then user data is erased.
12.9.3 Password
This function can have 2 types of passwords as described below.
Master Password
When the Master Password is set, the device does NOT enable the Device
Lock Function, and the device can NOT be locked with the Master
Password, but the Master Password can be used for unlocking the device
locked.
User Password
The User Password should be given or changed by a system user. When the
User Password is set, the device enables the Device Lock Function, and
then the device is locked on next power on reset. If Software Setting
Preservation is disabled, the device is locked on COMRESET as well.