NSRMMDBASM(8)               Legato NetWorker 4.0               NSRMMDBASM(8)


NAME
       nsrmmdbasm - NetWorker module for saving and recovering media
       databases

SYNOPSIS
       nsrmmdbasm [ standard-asm-arguments ]

DESCRIPTION
       The nsrmmdbasm is a standard, external ASM (Application Specific Mod­
       ule) that assists in the saving and recovery of the NetWorker media
       multiplexor's database files.

       See uasm(8) for a general description of ASM's and the [standard-asm-
       arguments].  It is intended that nsrmmdbasm only be invoked by
       saveindex(8) or recoverindex(8) operations.

       Actions performed by nsrmmdbasm, specific to the NetWorker applica­
       tion during a save are:

       Architecture independence:
              The high speed access methods and data structures implemented
              by the database code are machine dependent.  This ASM saves
              only the records (and not access indexes) in an architecture
              independent manner.  Therefore, NetWorker media databases may
              be saved from one machine architecture and recovered to anoth­
              er.

       Conservation:
              Since only changed records are saved, and not internal index­
              es, considerable network bandwidth and tape space are con­
              served.

       The recover operation of this ASM is the inverse of the save opera­
       tion.

FILES
       /nsr/mm/.nsr        This save directive causes most files in the di­
                           rectory to be skip during normal save operations.

       /nsr/mm/mmvolume    The file which is saved and recovered by this
                           ASM.

       /nsr/mm/mmvolume.r  A named pipe shared with nsrmmdbd(8) where this
                           ASM recovers data.

       /nsr/mm/mmvolume.s  A temporary file that this ASM reads when backing
                           up data.

SEE ALSO
       nsr(5), nsr_layout(5), nsrmmd(8), nsrmmdbd(8), nsrindexasm(8), recov­
       er(8), saveindex(8), uasm(8)






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