Standby Mode; Lsm Operating Modes; Automatic Mode; Manual Mode - StorageTek 4410 Hardware Operator's Manual

LSM Operating Modes

Standby Mode

The controlling software is connected to an ACS in standby mode when these conditions
are true:
• The dual LMU feature has been installed.
• No stations are online to the master LMU.
• At least one station is online to the standby LMU.
In standby mode, the controlling software intercepts mount and dismount messages and
accepts cartridge movement commands from an operator. The controlling software
cannot send requests to the master LMU, because no stations are online. You can resolve
this situation by issuing the switch command; this causes the standby LMU to become
the master LMU. When the standby LMU has assumed master LMU functionality, the
controlling software sends all the pending (or saved) LMU requests to the new master
LMU.
LSM Operating Modes
An LSM operating mode is the way in which an LSM and all the controlling software
attached to it interact. The two operating modes are automatic and manual. Automatic
mode is the normal operating mode of an LSM. An LSM is either in automatic mode to
all hosts or in manual mode to all hosts.

Automatic Mode

An LSM operating in automatic mode does not require your intervention to mount,
dismount, swap, or pass a cartridge. When the LSM is in automatic mode, you can use
console commands or batch utility processing to enter or eject cartridges through the
CAP.

Manual Mode

An LSM operating in manual mode cannot perform any automated operations. You must
manually mount and dismount cartridges.
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