Thank you for the reply, but I still can not get it working...
In the LEGATO messages file I can see next lines:
* rackserver01:/shares/home01/a 2 retries attempted
* rackserver01:/shares/home01/a nsrndmp_save: Performing backup to Non-NDMP type of device
* rackserver01:/shares/home01/a nsrdsa_save: DSA savetime = 1237470477
* rackserver01:/shares/home01/a nsrndmp_save: The Data Server does not support the level(1-9) backups.
* rackserver01:/shares/home01/a nsrndmp_save: LEVEL variable has the value 2
* rackserver01:/shares/home01/a nsrdsa_save: READYhost, ipaddr, port) = (back01, 172.16.1.80, 9443)
rackserver01: /shares/home01/a level=2, 0 KB 00:00:15 0 file
* rackserver01:/shares/home01/a nsrndmp_save: Save session closed with NW server successfully
* rackserver01:/shares/home01/a
So, no matter what, I can only get the full backup. When I try to use incremental, then I have this "The Data Server does not support the leve(1-9) backups.
I pass to the NDMP Data Server next variables: UPDATE=y, HIST=y, DIRECT=y
and I also use on the backup server side following command: nsrndmp_save -M -T dump