We have been working with QNAP NAS devices for more than 11 years. As you know, storage solutions require more space every day and must be available at all times.
When we received the first of the QNAP NAS solutions, it managed us very well for 3 years and met our expectations. When we realized that the capacity of the first device we bought was not enough and that we could produce very different solutions with the QNAP NAS, we immediately bought our second device and it has progressed in this way and now we have 3 devices.
I do not know if QNAP has such an additional service, I just did not ask for on-site service. Maybe this service works for that matter. But I didn't need it because the support engineers do a great job.
A few years ago I could not access my nas device in any way. The device was on, but there was no connection. I checked everything and registered to the service engineer and then called. He was connected to my system and saw that I could not access the device, he told me to eject all the disks on the NAS device and turn it back on (!) That scared me but still I did the device turned on. Then when we turned it off and re-inserted and opened the discs, it did not turn on again. The device was intact but we could not access my data due to a problem with the raid structure. Turning off the device, connecting the disks and connecting a monitor keyboard to the NAS device, was the only solution to recover from the command line. He explained everything to me one by one for hours and all my data became visible after the operations we did. At the end of the day, I felt like I was trained as a QNAP Support Engineer, and I saw again that the right product was built with the support behind it.