[Info-vax] Moving away from OpenVMS

JF Mezei jfmezei.spamnot at vaxination.ca
Mon May 21 14:01:10 EDT 2012


John Wallace wrote:

> Bear in mind that for a lot of folks, whether it's right or it's wrong
> according to contributors here, there is a short term goal to get off
> VAX, Alpha, and Itanium, and a longer (but not long) term goal to get
> completely off VMS regardless of the business impact of lost VMS
> functionality e.g. 

I view this differently.

Starting on the day you decide to downsize VMS out of existance, any new
projects go on the target platform. This is where growth happens from
that point on.  This may require some interfaces with legacy VMS to be
built so new apps on Linux can talk to old all on VMS.

Then, you slowly migrate apps from VMS to Linux one by one. As you
reduce the load on the VMS hardware by moving apps one by one, you make
room for growth in traffic for remaining apps.

If you start NOW to plan this move, then you have plenty of time to
execute it, plenty of time to model/shape your new architecture
properly, setup proper procedure for the system management aspects
(backups, recovery, database replication of hardware based disk
mirroring to replace volume shadowing etc).

And if you start now, you still have one or two speed bumps coming for
IA64 if needed.



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