The logical organisation of volumes within TMS follows closely the physical organisation and is therefore based around volume prefixes. For each different volume prefix a number of TMS LIBRARIES are defined, each corresponding to a possible location for volumes in that series. Most series will have the libraries/locations (where xx is the two lette VID prefix)
Examples of TMS libraries
xx_VAULT the location for volumes physically in the tape vault. Only volumes
in these libraries will be able to mounted on the central systems.
xx_REST a general location for volumes not in the vault
In some cases there will be libraries such as xx_EXPT for volumes at the experiment - but this depends on the way an individual experiment chooses to manage its own volumes.
Certain FATMEN routines require a TMS library as an argument, such as FMALLO, which allocates a volume from a named pool (see below) from a given library.