Ultrastar 7K2
HGST Hard Disk Drive
Technical Reference Manual
27
Password Security Mode
The Security Mode feature set allows the user to create a device lock password that prevents unauthorized
hard drive access even if the drive is removed from the computer. This feature varies by drive configuration
and may not be available on all configurations.
Master and User Passwords
The manufacturer/dealer can set a master password using the Security Set Password command, without
enabling the device lock function. The user password should be given or changed by a system user.
Master Password Identifier is supported and set to a default value of 00FE. If a Master Password is set via
a Security Set Password Command, a valid Master Password Revision code value of 0001h – FFFEh must
be used. A Master Password Identifier of 0000h is ignored.
When the master password is set, the drive does not enable the device lock function. When the user
password is set, the drive enables the device lock function, and the drive is locked after the next power on
reset or hard reset.
Security Levels
High - If High level security is set and the user password is forgotten, the master password can be used to
unlock the drive and access the data.
Maximum - If Maximum level security is set and the user password is forgotten, data access is impossible.
Only the master password with a Security Erase Unit command can unlock the drive when the device lock
function is enabled and the user password has been forgotten. When the Security Erase Unit command is
used to unlock the drive, all user data is erased.
Data Path Protection (DPP)
DPP prevents possible electronic failures from corrupting data on the hard drive. Although typically a
very rare occurrence, there is the possibility of intermittent failures within the hard drive due to the
electronics or connections on the printed circuit board inducing corruption of the data as it moves from the
interface to the media. By incorporating DPP in our hard drives, HGST protects customer data with the
ability to detect these type of rare events, and prevents incorrect data from being written to the media.
Manufacturing Option Block
The 8-pin jumper block is for factory use only. Placing a jumper on the pins does not enable any features
or affect drive setup or performance. Do not place a jumper on these pins.
Figure 5 Manufacturing Option Block
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