Re: Virtualized VMS in clusters (general questions)

I think the relatively trivial answer is to run your virtual nodes as
satellite nodes over Ethernet, and then everything just works.

This does work in the current CHARON-* (VAX, Alpha) products.

Is there some way in which I can dedicate a real host Fibre Channel
connection to my virtual machines?

The new versions of the CHARON products will support FC device names. That will allow
you to interoperate on a SAN with other CHARON or physical systems running FC

What about single-system-disk clusters?

This works now, if both systems can access the same disk directly, just as with physical
systems. You could use a multi-port disk box, iSCSI, SAN, etc.

Who arbitrates access to it? Can you do shadowed system disk on it?

The Lock Manager. You could shadow the disk if you were running a multi-site CHARON
cluster, no problem.

On the Itanium-emulated-on-Itanium approach (which isn't supported until
VMS 8.4) can you successfully run a multi-node cluster all on one physical
box with a single system disk?

Good question. Have to ask HP on that one...

But I'm not clear whether the hp/ux virtual switch supports, eg, DECnet,
MOP, SCS packets

There's really no point to it otherwise.

Can you do host-based volume-shadowing on SAN disks that are actually being
presented by non-VMS hosts (if that's how that works at all)?

Presented by other clients connected to the SAN?

How about on container files presented by the host?

That's in CHARON today, whether SAN-connected or local disk.

--Stan Quayle
Quayle Consulting Inc.

----------
Stanley F. Quayle, P.E. N8SQ Toll free: 1-888-I-LUV-VAX
8572 North Spring Ct., Pickerington, OH 43147 USA
stan-at-stanq-dot-com http://www.stanq.com/charon-vax.html
"OpenVMS, when downtime is not an option"


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