HP StoreEver MSL Tape Libraries - Manual (Page 17)

Maintaining encryption capability in the event of a power loss
For increased security, the key server token's PIN is stored in volatile memory in the autoloader or
library. Each time the autoloader or library cycles power the PIN must be entered. The autoloader
or library will display a warning message on the OCP and RMI, and send periodic SNMP and
email events, if those options are enabled, until the PIN is entered. The autoloader or library will
not write encrypted data when encryption is enabled until the PIN is entered.
CAUTION: If it is critical that the autoloader or library maintain encryption capability in the event
of a power loss, HP recommends that you plug the autoloader power cable or library power cable
into an uninterruptible power supply.
Maintaining encryption capability in the event of a power loss 17