[Info-vax] What does VMS get used for, these days?

[kemain.nospam at gmail.com]

> -----Original Message-----
> From: Info-vax <info-vax-bounces at rbnsn.com> On Behalf Of Chris Townley
> via Info-vax
> Sent: Thursday, November 03, 2022 1:47 PM
> To: info-vax at rbnsn.com
> Cc: Chris Townley <news at cct-net.co.uk>
> Subject: Re: [Info-vax] What does VMS get used for, these days?
> 
> On 03/11/2022 13:26, Simon Clubley wrote:
> > On 2022-11-02, Arne Vajhøj <arne at vajhoej.dk> wrote:
> >>
> >> And I don't believe in the unique killer feature idea at all - such
> >> get copied very quickly.
> >>
> >
> > It took a quarter of a century for clustering on other operating
> > systems to catch up to VMS clustering.
> >
> > Simon.
> >
> 
> Has it actually caught up?
> 
> --
> Chris
> 

The difference between OpenVMS clustering and other platforms is really a difference in technical strategies between shared disk (OpenVMS, z/OS, Linux GFS) vs. shared nothing (Windows, most Linux, UNIX's).

A good whitepaper which leaves out the OS religion and marketing and that discusses the pro's and con's of each cluster strategy. 

Shared Nothing v.s. Shared Disk Architectures: An Independent View
<http://www.benstopford.com/2009/11/24/understanding-the-shared-nothing-architecture/>

A good extract:
" Shared Disk Architectures are write-limited where multiple writer nodes must coordinate their locks around the cluster. Shared Nothing Architectures are write limited where writes span multiple partitions necessitating a distributed two phase commit."

Regards,

Kerry Main
Kerry dot main at starkgaming dot com






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