ADJ_LSM entry in vm.conf
The following configuration entry applies to NetBackup servers:
ADJ_LSM = robot_num ACS_ID,LSM_ID ACS_ID,LSM_ID
In an ACS robot with multiple library storage modules (LSMs), pass-through mechanisms can move ejected media to the media access port (MAP). A pass-through mechanism passes media from one LSM to another. This travel time can be excessive when media must pass through several LSMs.
Use this entry to specify the physical orientation of the LSMs in an ACS robot. If this entry is specified in vm.conf, you do not need to know which MAP (or ACS CAP) to select for efficient ejects. NetBackup determines the appropriate MAP to complete the media eject by using a nearest-MAP algorithm.
This nearest-MAP algorithm is based on the physical orientation of the LSMs that defined with this entry. This algorithm is only for the cases where more than one MAP is requested to handle the eject. If this algorithm is used, any MAP_ID entries in vm.conf are ignored.
Note:
nearest-MAP capability is only available by using the vmchange command with the -map option or the Vault administrative interface. It is not available from the NetBackup Administration Console.
Without this entry present, NetBackup assumes that all LSMs are interconnected with pass-through ports, except for the first LSM and the last LSM. The LSMs are interconnected in a line formation.
robot_num is the robot number. ACS_ID and LSM_ID are the coordinates of the LSM.
Figure: Pass-through example is a diagram of LSM interconnections that are described by the following entries:
ADJ_LSM = 700 0,0 0,1 ADJ_LSM = 700 0,0 0,6 ADJ_LSM = 700 0,1 0,2 ADJ_LSM = 700 0,1 0,6 ADJ_LSM = 700 0,2 0,6 ADJ_LSM = 700 0,2 0,3 ADJ_LSM = 700 0,3 0,4 ADJ_LSM = 700 0,4 0,5
The robot has pass-through mechanisms between 7 LSMs.
