11. Endura Decryption Utility
126
Using EDU to Decrypt Data: One Drive
Preparing to Decrypt Data to Tape
Make sure the system is set up as follows:
1.
Make sure Linux is running on the hardware and one SCSI-attach drive is mounted.
2.
Make sure the host is using a file system that can support files equal to the maximum
data capacity of the tape to be decrypted. For LTO-4, the file system must handle 800
GB files
3.
Make sure the host has enough space in the /tmp directory to store the maximum
data capacity of the tape to be decrypted (or, if you know the amount of data on the
tape, the equivalent amount of disk space). For LTO-4, make sure /tmp has 800 GB of
space free.
4.
Log in as a user with permissions to write to the drive. For example, you may need to
log in as a superuser to access it.
5.
Write-protect the tape or tapes storing the encrypted data.
Note:
EDU restores data that has been encrypted through the Spectra library
using QIP-based encryption.
6.
Insert the write-protected tape into the drive. Note the device name (this example
uses
/dev/nst1)
. Have an empty tape on hand.
7.
Copy EDU onto the system (optional but recommended); note the full path and file
name.