I have two QNAP NAS devices on my home network and and number of printers that I want to assign them with static IP's.

Have three X20's units installed, the main x20 unit is running in router mode (pretty much using it standard out of box configuration). 

The LAN IP is 192.168.68.1 subnet mask 255.255.252.0

The DHCP server is assigning address's START 192.168.68.50  END 192.168.68.250 

I see the feature to reserve an IP adress once it has been rnadomly assigned by the DHCP server.

But I want the the static IP address's to be from a continoues block of address's that I can easily remember.

So how do I set the X20 so that the DHCP server doesnt assigned address's to the existing devices on the network with static address's ?

Do I just reduce the END IP range to say 192.168.68.200 and then assign the devices with new static IP's in the 192.168.68.201 to 250 range ?

(I tried this last night be didn't appear to work... but may have got confused as was trying many different things to get all the device reconnected)

thanks.