On Tue, 28 Jan 2014, Johnny Billquist wrote:
    >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.
 
 
Wasn't there a DSC/DSC2 in VMS 1.5 and 2.x/3.x?
  I'm not aware if RT-11 also had some backup tool,
but I would assume so.
        Johnny
 
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Cory Smelosky
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