Reolink cameras that support FTP or ONVIF protocols could be used on NAS.

Applies to: All cameras supporting FTP

  WiFi Cameras PoE Cameras Dual-lens Cameras
Model C1; C1 Pro; C2; C2 Pro; E1 Pro; E1 Zoom; RLC-410W; RLC-410W-5MP; RLC-422W; RLC-511W; RLC-422W-5MP;RLC-510WA;RLC-511WA; RLC-523WA; RLC-542WA; E1 Outdoor; Doorbell WiFi RLC-410; RLC-410-5MP; RLC-411; RLC-411-5MP; RLC-420;RLC-420-5MP; RLC-422-4MP; RLC-422-5MP; RLC-423; RLC-423S; RLC-511; RLC-520;RLC-510A;RLC-520A; RLC-810A;RLC-811A;RLC-820A;RLC-822A;RLC-1220A;RLC-830A; RLC-823A; RLC-823A 16X; RLC-1212A; RLC-824A; RLC-812A; RLC-81MA;RLC-833A; RLC-1224A; E1 Outdoor PoE; Doorbell PoE Duo PoE; Duo WiFi; Duo 2 PoE; Duo 2 WiFi; TrackMix PoE; TrackMix WiFi; Duo Floodlight PoE; Duo Floodlight WiFi
Note: You could add E1 pro to QNAP and Synology, but you could not use FTP to upload E1 Pro's videos to other NAS/hard disks since E1 Pro doesn't support the FTP function

If you want to know more about how to have Reolink camera records to NAS, you may refer to 

How Can I Have My Reolink Camera Recorded to My NAS.