Shadov sets and diffrent versions of VMS

[Kjartan Konradsson]

Hi there,
I'm in the phase of upgrating my cluster and I'm vondering Is it ok to run 7.3-2 and 7.3-1 at the same time against the same shadow-sets?

Thanks
Kjartan

[Ian Miller.]

hp say those versions of VMS are supported for migration purposes in the same cluster so it should work.

[Uwe Zessin]

As Ian already said, it should not be a problem, because members of a steady shadow set are block-for-block identical.

[Kris Clippeleyr]

Kjartan,

We are even running a cluster with a VAX (VMS V7.3), an Alpha (VMS V7.3-1), and an Itanium box (rx2600, VMS 8.1), with shadowsets. Although officially unsupported, this works.
So, 7.3-2 & 7.3-1 in the same cluster should not pose a problem. I think it's even warranted by HP.

Greetz,

Kris

[Jan van den Ende]

Kjartan,

Shadowing 7.3-1 & 7.3-2 is fully OK.
It is an official rolling upgrade path,
and the official statement on that is that it is "NOT a steady production environment, but intended (and tested) for migration, although VMS Engeneering fully accepts that this temporary migration may well take some weeks or maybe months", although, SHOULD you run into any serious issue, they 'reserve the right' to ask for a clusterwide version consistency before investing in extensive corrective efforts.

I think that should satisfiy most needs...



Jan

[Kjartan Konradsson]

Thank you...