If you are going to set up NFS or try to connect to your NAS from outside your home network, you will likely want to configure your NAS with a static IP address. This will make is easier to mount NFS shares and to set up port forwarding.
If you have experience with Linux (since the NAS runs Busy Box Linux), accessing the NAS via SSH is very powerful. You can tweak configuration items like UID, move data between shares very quickly, and even install packages using QPKG and the Isty Package Management system. I installed “wakeonlan” to allow me to log into the NAS and wake sleeping systems on my LAN.
When you need to copy a file from one share to another, if you mount both shares on your computer, files will be copied from the NAS to your computer and back again over the network. This is very inefficient since you’re really just moving them around on the NAS. You can create a “root” share that points to “/” and give access to this share only to the administrator. When you mount this share, you can see all of your shares as subdirectories. While this is convenient to move files from one share to another instantly, it is also a bit hazardous since you could accidentally delete something, so treat this feature with care.