To make it more clear, are you looking just for backup some files/data or the whole entire volume(s) ?
Also do you want to backup the system or replicate it ? ( replicate is like taking an exact copy of all your system ).
Do you want to backup snapshots, or the real data ? also the backed up data, is it from the kind that used all the time, or there are some period of time that files (data) are not in use, and you may use the backup time in this period of time ?
thank you for your reply . the requirement is for Backup of Files/Data . this would be predominantly only NAS files/Folders created at the branch locations .
Replication of the NAS data would be useful as it would give the exact copy for restore incase of any failure at the branch level NAS appliance .
the data would be of end users , so each user would be accessing his own files/folders on the NAS at the branch location . so it would be beneficial if the solution can provide incremental backup or replication of file/folders on the central device which we plan to power by open-e DSS7 .
do let me know if this scenario should be possible .