imsasm is an external Solstice Backup ASM (Application Specific Module) that handles the saving and recovering of user mailboxes. imsasm is used in Solstice Backup (Networker) and invokes the imbackup and imrestore utilities to create and interpret a data stream.
During a save operation imsasm creates a save record for each mailbox or folder in its argument list. The data associated with each file or directory is generated by running the imbackup or imrestore command on the user's mailbox.
When browsing the file details with the nwrecover program, files (mailboxes) saved with imsasm will appear empty, but the full contents will be restored when they are actually recovered.
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See uasm(8) for a general description of ASM and the standard-asm-arguments.
To use imsasm to save the mailbox INBOX for user "joe', the system administrator creates a directive file <ADM_ROOT>/backup/DEFAULT/joe/.nsr with the following contents:
This causes the mailbox to be saved using imsasm.
Note - mkbackupdir will generate the .nsf files automatically. See "mkbackupdir" on page 29 for more information on the mkbackupdir utility.