[Info-vax] Marketing ideas for VSI ?

[Dave Froble]

On 12/15/2018 10:33 AM, Kerry Main wrote:

> Actually network latency is primarily based on speed of light (hops also),
> and this has not changed since the speed of light was originally calculated.
>
> Other factors to consider for long distance clusters and how far apart the
> can be is the R/W ration of the application This is because active-active
> clusters with load balancing across both sites requires  synch replication.
> A heavy write app will mean you will likely need to have sites closer
> together than the standard 100km rule of thumb that is usually stated in the
> context of long distance clusters. This causes performance issues if a heavy
> write bogs down the app while it is waiting for writes to occur at both
> sites before the update is considered complete at either site.

For most problems, there can be solutions, if the problem is properly 
analyzed, and one is open to all possible solutions.

CPUs have been hitting this wall for a while now, either in true speed, 
or, in the amount of heat they can tolerate.  One of the solutions there 
is more CPUs, and even switching between them, based upon heat.

Now, I'm not a network person.  I'm lucky if I can properly plug in an 
RJ45 plug.  But, I'd ask, if you have more to push through a pipe than 
the pipe can handle, why not more pipes?

Someone is going to solve this problem.  Might be nice if it was first 
implemented on VMS clusters.

-- 
David Froble                       Tel: 724-529-0450
Dave Froble Enterprises, Inc.      E-Mail: davef at tsoft-inc.com
DFE Ultralights, Inc.
170 Grimplin Road
Vanderbilt, PA  15486