I used to manage Tru64 (Alpha) and OpenVMS (VAX and Alpha). Mostly Oracle DB and whatever they called their App development suite (horrible, horrible software) for a University's ERP system (called Banner) and infrastructure (Multinet on OpenVMS/VAX for DNS, DHCP, mail, etc). After that I moved on to AIX on Power5 for Oracle on HACMP and Veritas Cluster. Such a different world from what we have now.
I have an old AlphaServer ES47 running OpenVMS and Power5 560Q running AIX in my garage
I forget that what I miss was not the system, but the community on the system. Solo VMS is a lonely experience.
the only dec hardware I ever touched that ran windows was an AlphaServer 1000, and my assignment was to get it back to running VMS. though, I'll admit now, i goldbricked a bit and spent some time trying out Digital UNIX first.
We also had a bunch of 1000 and 1000a's, and an AlphaStation running AltaVista firewall all on NT.
An ALR 6x6 (6* Pentium Pros) was faster for Windows than the fully loaded out AS4100 IIRC. Except that the 4100 supported more memory and PCI slots IIRC.
I worked at a mostly DEC shop for a while. They had transitioned their main product from VAX to Alpha. Most of the systems ran Digital Unix and VMS, but there was an AlphaServer with NT 4.