[Info-vax] Wide area cluster, metro area network, seeking info

[Stephen Hoffman]

On 2021-06-15 22:54:41 +0000, dthi... at gmail.com said:

> 
>>> VSI _is_ involved and we are working with them on this possibility. At 
>>> this point I think the additional license subscription costs are going 
>>> to kill the HBVS/cluster option, especially if a third node was needed 
>>> (and a third location and connection, and set of licenses). That means 
>>> going with the one-day latency backup option and generating and testing 
>>> the procedures for failing back to the main system when it is available 
>>> again.
> This is just a thinking-outside-the-box thought to bounce off of VSI in 
> the design discussions.  Since OpenVMS doesn't really have a good 
> solution for stabilizing a wide area 2-node cluster without extensive 
> hardware/software investment, you might ask them if they would 
> authorize you to set up a FreeAXP OpenVMS VM at a third site using the 
> Alpha Community License solely to provide a tie-breaking vote for your 
> production two-node cluster, and to do no other work. It never hurts to 
> ask if there's an acceptable lower cost alternative to an expensive 
> situation. This tie-breaker VM could even be hosted at an offsite VM 
> provider like AWS so that your company doesn't have to invest in a 
> physical 3rd site and network presence.

Or more succinctly, ask VSI for "buy two get one free" cluster pricing.

Two cluster PAKs still won't be cheap, if VSI goes for that.

(VSI does not presently have a voting-only cluster member product 
offering at present. The old cluster-client license can't vote.)



-- 
Pure Personal Opinion | HoffmanLabs LLC