Missing cards? They just might be empty, unused slots
in the
backplane.
That sounds like you've got the basic compliment. As I recall from my days
running a network of them, the base DN10K has four cards (Network, video,
CPU and memory). Extra slots were available for an FPU, more memory (and
maybe a disk controller?). The CPU should be easy to identify by the
presence of a MC68010 chip.
The DN10K's typically did not have their own disk drives; instead they
booted (and paged!) off of a "partner" server node having the disk. The
network adapters (in a plastic box that screwed onto the back) were
spectacularly flaky on those machines.
The DN10K's had a switching power supply with a subtle audible
hissing/buzzing noise corresponding closely to the machine's
activity. With experience, the power supply noise was almost as
informative as a blinking-light front panel. For example, it'd make a
distinctive rhythmic chirp when the network was interrupted and the paging
algorithm was frantically re-trying the operation to clear the page
fault. If not fixed ASAP, the screen would break apart with an ugly
"PARTNER NOT FOUND" message.
Between the flaky network adapters and the one-fails-they-all-die ring
network topology, keeping a DN10K network running was challenging.
Cheers,
jp