The NetBackup Administrator's Guide for Windows, Volume
I details that files and directories with path lengths greater
than 1023 are automatically excluded from backups. For MAPI mailbox
backups and for GRT-enabled backups, the path length limit applies
to individual mailbox folders and messages. When a legacy mailbox
backup encounters an item that exceeds the limit, the backup job
reports a final status of 1. This status indicates that some items
were not backed up, and the job details tell you which items were
skipped. For granular backups NetBackup checks the pathname length
limit and reports exceptions, during browsing and restoring of the
granular backup image. It logs the pathnames that exceed the limit
in the unified logging ncflbc
or
ncfgre
logs. Then it reports the
items that were skipped during restore to the View Status window.