If it is desired to backup the NetWare trustee rights that have been assigned to a NFS Gateway volume, the easiest approach would be to make backups of the NFS Gateway shadow files which store that information. These files are stored by default in various subdirectories under SYS:\GATEWAY\ or in another <vol>:\GATEWAY\, as set in the NFS Gateway volume configuration. This will also hold other Netware-specific meta data, like file attributes, LONG name space, etc. Most of this information is easily replaced / rebuilt, but trustee assignments are sometimes numerous and tedious to replace.
An alternative method of using TRUSTBAR.NLM for backing up and restoring trustee rights is discussed in the NFS Gateway on-line doc, section 5.0 and 5.1. See https://www.novell.com/documentation/nfsgynw65/index.html
Backing up files through NFS Gateway will backup the files according to the NetWare virtual meta-data. This does not necessarily preserve the original names or attributes of the files. For example, Unix and Linux file systems typically allow characters which LONG and DOS name space do not allow. Therefore, if a NFS Gateway volume is backed up and later restored, the resulting file names on the Unix or Linux hosts which really holds the files will be a translation of the original names, rather than the actual original names.
In error conditions, NFS Gateway may not show all files the really reside on the remote NFS Server. Errors occurring during the remote operations could artificially truncate directory listings. Backups could therefore be incomplete, without an error being passed between NetWare OS and the backup software.
Similar to all NFS client implementations, because the imported file system does not reside locally on the NetWare, cache inconsistency issues could exist for both data and meta-data.