It is a *lot* different.
What RAC is supposed to do for an application ( i.e. run on a
node, you don't know/don't care which one ), GC does for apps
in general.
It's still vapor ware in many respects. Look up Sun N1, they claim
to be making use of it internally. The pieces for it are only partly
in place though.
http://wwws.sun.com/software/learnabout/n1/
It's still a few years out I think.
Jared
| <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED] 08/25/2003 12:54 PM
|
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> cc: Subject: Re: Re: Grid |
how different is the concept of a grid from RAC?
>
> From: "Tanel Poder" <[EMAIL PROTECTED]>
> Date: 2003/08/25 Mon PM 03:39:30 EDT
> To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
> Subject: Re: Grid
>
> In my understanding, Oracle 10 won't support the "real" grid. Instead it'll
> probably a concept of having singe huge database on a huge storage array/SAN
> and having a bunch of cheap (linux) servers in RAC which can then distribute
> their workload automatically and using service_names mechanism they can
> transparently allocate/deallocate nodes for some specific work.
>
> This is only an assumption, I haven't seen or touched 10g myself, even
> though I would like to :)
>
> Tanel.
>
> ----- Original Message -----
> To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]>
> Sent: Monday, August 25, 2003 9:09 PM
>
>
> > While I was cleaning up the other day, I noticed a magazine sticking out
> of
> > the middle (sadly, closer to the top) of my still-to-be-read list. The
> cover
> > story of Physics Today (Feb. 2002) is "The Power of Grid Computing". It is
> a
> > pretty good review article on the subject. If anyone is interested, the
> URL
> > is http://www.aip.org/pt/vol-55/iss-2/p42.html
> >
> > The major point seems to be that the grid is simply just a way to share
> > distributed resources. However, utilizing these resources needs an
> > infrastructure in place. It "requires uniform mechanisms for such critical
> > tasks as creating and managing services on remote computers, supporting
> > single sign-on to distributed resources, transferring large datasets at
> high
> > speeds, forming large distributed virtual communities, and maintaining
> > information about the existence, state, and usage policies of community
> > resources...Providing the infrastructure and tools that make large-scale,
> > secure resource sharing possible and straight-forward is the Grid's raison
> > d'etre."
> >
> > In addition, this means that computing resources can be parcelled out like
> a
> > utility. If you need extra CPU, buy it and use it from your utility when
> you
> > need it. You don't need to own the hardware for your peak load. It also
> > becomes easier to share data and applications between colleagues at
> > different locations.
> >
> > I can see how databases are part of this picture, but I am not sure how
> > Oracle will try and place itself at the center of this trend (unless they
> > mangle the concept of Grid in the process).
> >
> > Henry
> >
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.net
> > --
> > Author: Henry Poras
> > INET: [EMAIL PROTECTED]
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Tanel Poder
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