Security Level; Security Mode Feature Set - Hitachi HDS723020BLA642 Specifications

9.6

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.
The following commands are supported for this feature.
Security Set Password
Security Unlock
Security Erase Prepare
Security Erase Unit
Security Freeze Lock
Security Disable Password
9.6.1 Security mode
Following security modes are provided.
Device Locked mode
Device Unlocked mode
Device Frozen mode
9.6.2

Security Level

Following security levels are provided.
High level security
Maximum level security
('F1'h)
('F2'h)
('F3'h)
('F4'h)
('F5'h)
('F6'h)
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.
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 user data is erased.
Hitachi hard disk drive specifications
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