Some backup programs run from the server and some of those compress on the server. NVMe is useful for that.My experience is that if you do that on the client everything goes over the network twice as well as over the PCIe bus twice.
If you use screen sharing, you can work on the server.
I am thinking mainly about the cron job on the server to backup disk A to B. Could use compression if the files are not video, photo, LibreOffice. The OP has not mentioned they type of files to put on the NAS.
On another note. When looking at adaptors for the Pi 5 PCIe, I found a bunch that have hidden down in the tech specs: PCIe 2
Statistics: Posted by peterlite — Thu Feb 12, 2026 2:29 am