[Info-vax] Clustering V9.2 with V7.3, was: Re: VSI OpenVMS V9.1 Field Test beginning.

[Stephen Hoffman]

On 2021-07-06 23:54:09 +0000, Dave Froble said:

> Beware the "wrath of Hoff" descending upon you ...
> 
> :-)
> 
> Seriously, the issues will be complex enough, without VSI having to 
> support two protocols.

Clustering already "runs" up to two protocol versions at once, when 
necessary. For lack of better terminology, "old" and "current". This is 
necessary for rolling upgrades.

> It's past time for SAS to be a bit more secure, so just go there and 
> get it over with.

SCS, not SAS.

> After all, who would be affected?  Perhaps Phillip, and maybe someone 
> else.  DECnet works fine for transferring data one time.  One could 
> even place everything on LD volumes for one time transfer.  And of 
> course there is always image backups.

If you're still running production OpenVMS VAX, you're not in a rush to 
cluster with and upgrade to x86-64. You're just not.

If you're still running OpenVMS VAX, you're probably not replacing 
anything—not anything you can avoid replacing—until the production line 
and/or the whole facility is replaced and rebuilt.

And in the unlikely event you really do want to use or to add a cluster 
to migrate three architectures forward from a production OpenVMS VAX 
configuration—and I'm skeptical that there's more than a rounding error 
of examples here that want to add multi-architecture clustering with 
OpenVMS x86-64 to an OpenVMS VAX production configuration—then the 
OpenVMS VAX configuration and the rest of the cluster must all be under 
VSI support.

Here are the warranty and migration configurations: 
https://vmssoftware.com/products/clusters/


-- 
Pure Personal Opinion | HoffmanLabs LLC