Dell Data Protection | Encryption Guide de l'utilisateur télécharger pdf (Page 81)

Enterprise Edition Administrator Guide 81

Prepare the Environment (or Slaved Drive)

SDE Environment Prerequisite

The computer must be booted into the appropriate recovery image or a slaved drive.

HCA Decryption Environment Prerequisites

The computer must be booted into any Windows-based alternate operating system environment on the computer to

recover, with the hard drive you are trying to recover attached. This can be accomplished by booting to the appropriate

recovery image or by booting from another drive or helper partition that has another version of Windows installed (but not

HCA encrypted). This can be done on any computer running a compatible operating system as long as the drive to be

decrypted is attached and accessible.

HCA Recovery Environment Prerequisites

• An HCA encrypted drive must be attached.

• The computer must be booted to the appropriate recovery

image: the Win PE HCA recovery environment that has HCA

drivers and other required components. HCA recovery outside of this environment will not work.

• The booted environment must have network connectivity to the Dell Device Server.

Establish HCA Card Ownership

When the HCA card is already owned,

the recovery process can still be successful. The recovery process will try to use the

existing backup of the HCA Critical Data and password to establish and maintain the HCA ownership of an

already-owned HCA card. If this attempt fails, then the recovery operation fails. When it fails, reboot and clear the HCA

card’s ownership.

When Installing an HCA Card from Another Computer,

you must clear HCA ownership on the swapped HCA card and

establish new ownership. Since the HCA card from the other computer was previously owned, recovery cannot succeed

until the HCA owner is cleared in the BIOS.

See DDP|HCA Pre-Installation BIOS Configuration for instructions on clearing HCA ownership.

CAUTION

Drives encrypted by HCA will become inaccessible if ownership is cleared. The user will need to perform an HCA

recovery or an HCA decrypt in order to restore access.

Set up a System Password (Legacy HCA only)

Recovery of a computer equipped with legacy HCA requires a system password to be validated prior to recovery. If no

system password is set, you will be prompted to go into the BIOS and set up a password. See DDP|HCA Pre-Installation

BIOS Configuration for instructions on setting up the system password.

Extract the Recovery File (optional)

Running the recovery program at the command line with parameters gives you a little more control over the process and

outcome. Because the compressed recovery bundle that you downloaded from the Server does not respond to command

line switches, the LSARecovery file must be extracted from the bundle. Follow these steps to obtain the LSARecovery file:

Locate the downloaded recovery file.

Right-click it and select

Run as administrator

. The recovery program runs and displays a dialog box.

In Windows Explorer, check the directory where the recovery file is located to find a file called

LSARecovery_

machinename

domain

.com.exe.

Copy the LSARecovery file to another location to save it.

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