Hitachi IC25N040ATCS04-0 Specifications - Page 99

Security Mode Feature Set

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11.9 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 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) 11.9.1 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. 11.9.2 Security level The 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. 11.9.3 Password This function can have two 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 CANNOT be locked with the Master Password, but the Master Password can be used for unlocking the locked device. 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 the next power on reset or hard reset. The system manufacturer or dealer who intends to enable the device lock function for end users must set the master password even if only single level password protection is required. Otherwise, the 'default' master password which is set by Hitachi can unlock a device that is locked with a user password. Hitachi Travelstar 60GH & 40GN hard disk drive specifications 86

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11.9 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 a device even if it is removed from the computer.
New commands are supported for this feature as listed below:
('F6'h)
Security Disable Password
('F5'h)
Security Freeze Lock
('F4'h)
Security Erase Unit
('F3'h)
Security Erase Prepare
('F2'h)
Security Unlock
('F1'h)
Security Set Password
11.9.1 Security Mode
The following security modes are provided.
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.
Device Frozen 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 Unlocked 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 Locked Mode
11.9.2 Security level
The following security levels are provided:
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.
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.
High level security
11.9.3 Password
This function can have two types of passwords as described below.
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 the next power on reset or hard reset.
User Password
When the Master Password is set, the device does NOT enable the Device
Lock Function, and the device CANNOT be locked with the Master Password,
but the Master Password can be used for unlocking the locked device.
Master Password
The system manufacturer or dealer who intends to enable the device lock function for end users must set
the master password even if only single level password protection is required. Otherwise, the 'default'
master password which is set by Hitachi
can unlock a device that is locked with a user password.
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
86