Hitachi HTS541040G9AT00 Specifications - Page 92

Security Mode Feature Set

Page 92 highlights

11.9.6 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, Sleep command, and Hard Reset, but also by the Standby timer. So 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 30 minutes have passed since the last saving, besides above condition. 11.10 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 a device even if it is removed from the computer. New commands are supported for this feature as listed below: Security Set Password Security Unlock Security Erase Prepare Security Erase Unit Security Freeze Lock Security Disable Password ('F1'h) ('F2'h) ('F3'h) ('F4'h) ('F5'h) ('F6'h) 11.10.1 Security mode The following security modes are provided: Device Locked Mode Device Unlocked Mode Device Frozen 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. 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. 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. 11.10.2 Security level The following security levels are provided: High level security Maximum level security When the device lock function is enabled and the User Password is forgotten, the device can be unlocked via a Master Password. 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 the user data is erased. Travelstar 5K100 Hard Disk Drive Specification 78

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Travelstar 5K100 Hard Disk Drive Specification
78
11.9.6
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,
Sleep command, and Hard Reset, but also by the Standby timer.
So 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 30 minutes have passed since the last saving, besides above condition.
11.10
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 a device even if it is removed from the computer.
New commands are supported for this feature as listed below:
11.10.1
Security mode
The following security modes are provided:
11.10.2
Security level
The following security levels are provided:
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)
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.
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 the user data is erased.