I doubt the drives were exactly 'up'. Spinning, yes.
I had a legacy Netware 3.11 server once upon a time... it was up for years and years, and by the time I got to the company it was like a legend. Eventually though there was a power outtage that outstripped the UPS system and required a re-start.
It wouldn't load. We sent the hard drives out to be recovered and they didn't actually exist anymore - the surface had been work away years before, and the server had been running purely in RAM.
Netware was awesome.
I concur. In 1995, my then employer had been running netware for quite few months on DX2 66Mhz for some time. It was running in 1999 when I left.