Basic Media Changer (chdc) Command Summary

 
chdc command 
Capitialized letters indicate command abbreviation
Functionality
Help Show this basic list of chdc commands
?  Same as Help
Query All Query all tape drive, changer mechanism, slot definitions
Query CONFig Shows basic info (ie. units, changers, drives, slots)
Query RESource  Query resources - displays # of drives and slots available or unavailable, loaded, occupied, scratch
Query CONNection  Query connection
Query Slot N Query status of a specified slot
Query Drive N  Query status of a specified tape drive
Query Chm N Displays changer mechanism specification
Query Unit N Queries for information on a specified unit number
Query Vol VVV  Query status of specified volume
Allocate Volume VVV Slot N [SCratch]  Assigns the specified volume name to a particular slot and optionally denotes this volume as a SCRATCH volume
Deallocate Volume VVV Remove definition from table for specified volume
Import Volume VVV [Slot N] [SCratch] Retrieve designated volume or slot from device door on devices with import/export capabilites
Export Volume VVV | Slot N  Remove specified volume from assigned slot and put in export port on device
Load Volume VVV | Slot N | SCratch [Drive N] Load specified volume or slot into assigned drive. Designating "Scratch" will used first available scratch volume in table
Mount Volume VVV | Slot N | SCratch [Drive N] Same as Load
Unload Volume VVV | Slot N | Drive N Unload specified volume from drive and return to appropriate slot
UNMount Volume VVV | Slot N | Drive N Same as Unload
DISMount Volume VVV | Slot N | Drive N Same as Unload
RESet Reset information about loaded volumes