Integrated File System
Since its origin AS/400 uses a 3 level file hierarchy
files are called " native ".
TBT/400 operates on this hierarchy in its file history
functionality in different ways, according to its parameterization
• Monofile / Multimembers : simplest method,
but all files are required to have the somr record length.
• Multifiles / Monomember : method raising
the preceding restriction but polluting the library by the
multiplication of the files objects.
• Multifiles / Multimembers : compromise
between the two preceding methods, the file names including
the record length.
• Multifiles/Multimembers : improvement
of the preceding method, the file name also including the
The IFS (Integrated File System) is a component of the
OS/400 allowing access in " Stream " mode in input as
well as output, access that are similar to the PC and UNIX
More and more AS /400 applications are now using the " Root "files
instead of " native " files.
Thus, TBT/400 has adapted itself to this need and allows
to manage this type of file in transmission as well as
To that purpose, a major directory is created in the IFS " Root " for
each TBT/400 instance used.
Of course, this possibility coexists with the conventional
management of TBT/400.
TBT/400 also processes the historization and cleaning of
these IFS files.