Two Media Servers - One Tape Library
Only one media server can
Only one media server can have robot control. Other media server may use additional tape drives in the same robot. However robot control for those media servers will be "Robott control is handled by remote host". Remote host is the media server connected to the robot interface.
See The Netbackup 7.5 Manual Page 254
SAN Client: Support for different kernel versions on Linux Fibre Transport Media servers