I started my life in IT as a SUN Systems Administrator with SunOS 5.2, so the early days of Solaris.
I can still remember the horrors of :
CDE
Printer configuration
partitioning drive slices
“moving” a system by unplugging the ID chip from one motherboard and plugging it in on another one
SCSI terminators (not specifically Sun, but it still fits)
OTOH the hardware ran forever and just continued to work when other systems had long given up the ghost. SPARC hardware was a joy to work with.
I have a SparcStation 5 sitting on a shelf for prosperity’s sake, but it hasn’t been powered on in decades and the capacitors are almost certainly dead. Still have the shiny mouse mat, so the optical mouse would work