Apparently, the only place the VAX 380 exists is in a writing sample by Pearson Education. Otherwise, there is no evidence of DEC ever producing something called "VAX 380".
It looks entirely made up because the procedure described is also entirely alien to me, and I had professional experience with both VMS and Ultrix when they were still supported by DEC. (And it's certainly not BSD...)
Apparently, the only place the VAX 380 exists is in a writing sample by Pearson Education. Otherwise, there is no evidence of DEC ever producing something called "VAX 380".
https://www.pearsonhighered.com/assets/samplechapter/0/2/0/5...
It looks entirely made up because the procedure described is also entirely alien to me, and I had professional experience with both VMS and Ultrix when they were still supported by DEC. (And it's certainly not BSD...)
I know I just made it up! I have an 11/23+ and I'm guessing I was thinking of that 3!