We ran the same server for nearly 10 years until the original drive failed.
It had had 2 or 3 extra drives, 3 NOSes, 1 case and 3 CPUs and mother boards.
Last seen with one of the newer drives hosting a 4th NOS.
Run out of space - put in extra drive and merge it in, go a bit slow new MB processor - started as 3.11 ended up as 6.0 without original drive via 4.10 (I think) and 4.11 SP4
Except Netware was pretty rubbish at multiprocessor stuff until v5. Actually, didn't really get to grips with it until v6's Linux kernel.
Went well enough as a single processor - ours started as a 386!
Run 486 for a few years then a pentium of some form.
Back in the NW4.11 era multiprocessor was no big deal the server would handle more throughput than an NT box anyway - seen the tests ran by a supplier. Near enough twice the disk performance - about 4x total throughput for same hardware.
Tests were published - Extended Systems did them
I suspect a biased test. Remember I used to look after around 300 Netware (4.11 mostly) servers, and maybe 200 odd Windows (NT3.51/NT4) servers. Depending on users/application, mostly Compaq Prosignia 300 (small stuff) and Compaq Proliant 4500 (larger stuff) type stuff.
To be honest, not much between NW411 and NT3.5/4 performance wise. Netware lost a bucket load of performance between V3 and V4, yet the only real change was moving from Bindery to NDS. If you needed to use TCP/IP across your WAN routers, Netware's performance died even further, as your choices were IP Tunnels or the utterly awful NetWareIP.
Don't get me wrong, Netware was a decent NOS, esp with NDS. But Windows servers made as good file/print servers, and far better application servers. And more reliable to.