Hi,
vdump does backups of filesets, so make a directory per filesystem on the local machine.
Mount them all on the local machine (for an example mount -t nfs remotesystem:/usr_backup /mnt/usr_backup)
Make clones of every filesystem (for an example clonefset usr_domain#usr usr_clone).
Mount the clones in temporal mount points. (mount -t advfs usr_domain#usr_clone /mnt/usr_clone)
Make one vdump per filesystem, the source filesystem is the cloned one and the destination is the nfs-mounted, for an example: vdump -0f - /mnt/usr_clone | vrestore -xf - -D /mnt/usr_backup .
umount and rmfset all the clone filesets.
umount all nfs-exported filesets.
It's done.