I have seen other controllers (8880 and 8881) in use 24/7 for years with occasional restart for regular maintenance.
Anyway, I believe your IT would update some software and patches that requires a restart, but the hardware by itself is robust to run 24/7.
Edit: though this is the case I have seen, NI seem to recommend a special version for 24/7 and extended temparature operation - https://www.ni.com/en-in/shop/pxi/ni-pxi-embedded-controller-design-advantages.html#:~:text=Back%20t...
https://forums.ni.com/t5/PXI/What-does-it-mean-that-a-PXI-Embedded-Controller-is-NOT/td-p/1009367
