Logical Libraries - HP StorageWorks MSL2024 User's And Service Manual

NOTE:
The Library can only obtain encryption keys from one source. Using the Encryption Kit will prevent
application-managed encryption.
Encryption is primarily designed to protect the media once it is offline and to prevent it being accessed
from another machine. You will be able to read and append the encrypted media without being
prompted for a key as long as it is being accessed by the machine and application that first encrypted
it.
There are two main instances when you will need to know the key:
• If you try to import the media to another machine or another instance of the backup application
• If you are recovering your system after a disaster
NOTE:
Encryption with keys that are generated directly from passwords or passphrases may be less secure
than encryption using truly random keys. Your application should explain the options and methods
that are available. Please refer to your application's user documentation for more information.
If you are unable to supply the key when requested to do so, neither you nor HP Support will be able
to access the encrypted data.
This guarantees the security of your data, but also means that you must be careful in the management
of the encryption key used to generate the tape.
CAUTION:
You should keep a record or backup of your encryption keys and store them in a secure place separate
from the computer running the backup software.
For more information about AES encryption, encryption keys, and using hardware encryption with
your HP Ultrium tape drive, see the White Papers on
tapewhitepapers.html.
For detailed instructions about enabling encryption please refer to the documentation supplied with
your backup application or with the HP StorageWorks 1/8 G2 and MSL Encryption Kit. This will also
highlight any default states, for example when copying tapes, that may need changing if using
encrypted tapes.

Logical libraries

You can configure a Tape Library with multiple tape drives into logical libraries. Each logical library
must contain at least one tape drive. Each logical library is configured independently, allowing use
by different backup applications and with different backup policies. For example, one logical library
could perform a backup operation for one department while the second logical library restores data
for another department. Or, one logical library could have encryption enabled while another has
encryption disabled. Data cartridges in one logical library cannot be shared with other logical libraries.
All logical libraries have access to the mailslot, if the mailslot is enabled. The Tape Library prohibits
a cartridge that was placed in the mailslot by one logical library from being moved into another
28 Features and overview
http://h18006.www1.hp.com/storage/