I saw my old employer's last Tandem. I wish I could've been there for the decom, it must be quite a procedure to actually turn one off.
The other division still operates Stratus, which makes no sense to me. Why? They ALSO have mainframes, which is what Stratus and Tandem were imitating.
Politics, and inertia.
@Benhm3 @jalefkowit lots of banks here in ZA had Stratus or Tandem for their ATM switches, and mainframes for their actual banking transaction processing. Not sure if that is still the case.