Hitachi Freedom Storage Lightning 9900 V series Configuration Manual page 39

TrueCopy TrueCopy is a program product that allows you to perform host-free
remote copy operations between 9900V subsystems in different locations
for data backup and disaster recovery purposes.
UCB unit control block
User account The user account list includes user information such as user ID, password,
list and write permission for each 9900V option.
VLL Virtual LVI/ LUN is a program product that enables you to configure
custom-size logical device images and logical units, which are smaller than
standard-size devices.
Volser volume serial number (mainframe volume identifier, not related to the
LDEV ID)
Hitachi Lightning 9900™ V Series Red Hat Linux Configuration Guide
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