|As I have written, also can no longer find any information on ordering VAX/VMS on the HP web, but maybe the contact page ( http://www8.hp.com/us/en/contact-hp... ) has the phone numbers/email addresses.|
Maybe if You post a message on newsgroup comp.os.vms there might be more people listening with contacts to HP.
(I do no longer by something VMS related myself).
As to the VAX hardware for the upgrade: VAX 4000/700 is a Qbus box if I remember right ?
i would believe the installation manual, which doesn't mention restriction for 4000/700. Just go through the checklist in the manual to see if You find anything.
The only problem could be a CDrom drive for the VMS installation: booting the VMS installation either needs a local CDrom drive (SCSI interface ?), or You have to copy the CD to a VMS/Vax bootable disk. (The last VMS/VAX installation on (the smaller) Vax4000/200 I did from a an Infoserver without having a local CD on the Vax.
Sorry for being not more helpfull, but the last time I installed VMS/VAX is more than 10 years now.