Re: Is OpenVMS certified yet for 64-way Hard partitions (GS1280 M64).

Doug Phillips wrote:
I understand the all-the-eggs-in-one-basket thing, but at what level
does the application need to be "cluster aware"?

In its design. Consider a "server" process that receives requests and
queues them for processing by itself and assumed that it is the only
process accessing the database/files because all requests are funnelled
through it.

Making this work in a cluster requires substantial changes because you
would now have 2 or more processes accessing the same database.


VMS clustering was "transparent" in the days of interactive sessions
with users at the $ sign all day and running TPU/Compilers. But when you
get into server type applications, the plot thickens. distributing
transactions to spread the load amongst the available nodes is not
trivial unless you can be sure that no client casches IPs adresses and
continuously do DNS requests to make use of DNS load balancing for instance.


It is definitely doable. But it isn't "out of the box" that way for
every type of application.
.

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