[Info-vax] WHY IS VSI REQUIRING A HYPERVISOR FOR X86 OPENVMS?

[Phillip Helbig undress to reply]

In article <memo.20210101114248.3580A at jgd.cix.co.uk>, jgd at cix.co.uk
(John Dallman) writes: 

> In article <98286971-2cf9-4732-a390-e2fb2e467f1fo at googlegroups.com>,
> ultradwc at gmail.com (D W) wrote:
> 
> > As for hardware failures I would I think OpenVMS clustering is a 
> > far superior solution than the VM solution.
> 
> Yes, in some ways. But the VM solution is familiar to most companies' IT
> departments, and VMS clustering is not. 

My guess is that almost all existing VMS customers use clustering, and 
that almost all future VSI customers are current VMS customers.
 
> Also, modern x86-64 hardware is /fast/, and a single VMS instance should
> be able to do the work of several Alpha boxes, or a couple of Itaniums.

But increased power is only one of many reasons for clustering.

> In the common situation where VMS usage has been shrinking as a
> proportion of a company's IT, replacing several old machines with a
> single VMS VM will be attractive to management. 

Unless they need a solution where the application can survive the loss 
of a data centre.