NAS IP changes after reboot. How to keep a fixed NAS IP?
Applicable Products
NAS (QTS / QuTS Hero)
Scenario
After a power outage or reboot, the NAS obtains a different IP from DHCP. PCs that use a hard-coded NAS IP can no longer connect.
Solution
Find the current NAS IP first
Use Qfinder Pro to discover NAS devices on the LAN—even if you don’t know the IP.
Preferred approach: set a DHCP reservation on the router
Bind the NAS MAC address to a fixed IP on your router/DHCP server, so the NAS always receives the same IP.
For QNAP QuRouter (QHora): Bridge Settings → Reserved IP Table → Add an entry to bind NAS MAC to the target IP.
Avoid conflicts: make sure the reserved IP won’t be handed to others. The forum advice also warns about duplicate IPs.
Alternative: configure a static IP on the NAS
In QTS: Control Panel → Network & Virtual Switch → Network → Interfaces → Configure → set IPv4 to Static and fill IP/Subnet/Gateway/DNS.
Key points:
Keep NAS and PCs on the same subnet (e.g., 192.168.100.0/24 → PC=192.168.100.10, NAS=192.168.100.11).
Place the static IP outside the DHCP pool (or reserve it on the router) to prevent conflicts.
