Re: Upgrading VMS
From: H Vlems (nospam_at_what.ever.com)
Date: 07/08/05
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Date: Fri, 8 Jul 2005 20:26:27 +0200
"David D Miller" <ddmiller@raytheon.com> schreef in bericht
news:OF2D01669F.D0936041-ON07257038.004D2332-07257038.004DB1E9@mck.us.ray.com...
>
>
>
>
> G'day:
>
> How do you make a decision to upgrade? Is your decision ruled by Policy?
> By convenience (nothing else to do today)? Or do you have an objective
> criteria that you apply?
>
> Specifically, is 7.3 good enough (in some sense) or is 7.3-2 a better bet?
>
> I suppose the same question could be applied to patches -- but then again,
> maybe you apply the same process.
>
> Thanks, dave.
>
One reason to perform an upgrade that I haven't seen yet is standardization.
If the site you work
for runs, say, 80 VMS systems then some standard is desirable. Between V4.x
and V7.3 several
commands got changed, some more than others. SHOW NET delivers different
output, SHOW LICENSE
under V5 is more verbose than in later versions and certain BACKUP
qualifiers got a different value.
Not to mention the enhancements Guy Peleg made to DCL. Once you're used to
them and put them in
DCL command files they're certainly not backwards compatible.
So if one system needs a VMS upgrade, it follows that the others ought to go
as well. That may be painful
but usually the cost of keeping a wild mix of VMS versions in a production
environment and consequently
the human errors that follow tend to be more expensive.
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