On 2014-01-28 18:59, Zane Healy<healyzh at aracnet.com> wrote:
On Jan 28, 2014, at 5:31 PM, Paul Koning<paulkoning at comcast.net> wrote:
>But BRU produces something structurally
different from VMS save sets, doesn?t it?
It's been so long since I've
looked at any of this, I honestly don't remember. I was thinking that RSX-11 backups
would be readable by at least some versions of VMS.
No. VMS BACKUP cannot read RSX BRU format savesets. But you can (could)
run BRU on VMS...
>RSTS
Backup actually generates VMS save sets, the same format.
That's good to know.
Right. Different PDP-11 OSes use different formats, so it's not really
meaningful to ask about "PDP-11 backup". You need to specify which
backup format you are talking about.
I think I know of at least four.
RSX used to use something called DSC (which stood for Disc Save and
Compress), which was eventually replaced by BRU.
I assume RSTS/E had some backup format in the older days. With RSTS/E V9
(I think it was), a new backup utility was created, which is the VMS
compatible one.
I'm not aware if RT-11 also had some backup tool, but I would assume so.
Johnny