I read through the starters guide on how to buy a NAS but I have a special request. I'm looking for a NAS that I can setup to auto delete files after a certain age. The reason why I want this is because I'm setting the NAS as a backup source for my NVR IP camera system. The NVR can auto FTP the footage to the NAS via FTP but it will be up to me to make sure there is enough room to accommodate the daily backups. I wasn't sure if there was any NAS that could do that. I was looking into the QNAP, Netgear or Synology series and tried the demos for both QNAP and Synology but there wasn't anything in there that I could see had the feature. Since I need abundant amount of storage (between 12 to 16TB), I was going to go for a unit that can do 5 or 6 hard drives. The price isn't too much of a concern but more for the auto deletion feature that I need, since I won't have time to manually go through the file browser to delete the old footage. I rather have the NAS automatically delete a certain age and free up the space for me. Any help would be appreciated, thanks!