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This is interesting: Free IT Magazines | Databases help forum



General discussions > Public newsgroups > alt.certification.mcse > Re: Want to know about Servers Clustering

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Author Re: Want to know about Servers Clustering
Simon Geary
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Re: Want to know about Servers Clustering


> I am looking for a book/resource/web link for an excellent, concised
> explanation of Microsoft Servers Clustering.
>

What ever you do, don't buy the MOC book for the clustering exam. It sucks.
Cluster books are few and far between, try the David Libertone book or see
hear:
http://www.microsoft.com/NTServer/S..._faq.asp?RLD=36

> I am more interested in high level concepts and just enough technical
> details.
>
> For example, I want to know how clustering work with applications. How
> does an application recover from a single server failure in a cluster?


Generally speaking, the application is installed on each server and the data
is stored on a shared hard drive (The shared device configuration) Servers
send heartbeats to each other, when one server fails, the other can take
over. (Active-Passive configuration) If the shared drive fails you are
stuffed. There are other configurations you could use though.
>
> Do Applications have to be "cluster-compatible?" or can you just throw
> in any application to it and expect it to work?


For optimum use, applications must be 'cluster aware' like SQL 200
Enterprise and Exchange 2000 Enterprise. But some applications will work
with a cluster anyway if you use the built in 'Application' resource, but
strange things can happen when you do this, so don't use it. If you are dead
clever, you can write your own cluster API.
>
> How (if) clustering set up/ work in a web-farm environment?


You tend not to use clustering for web farms, use NLB instead. For any
database servers behind the web site, use clusters. For any web aplications,
use Application Centre 2000.
>
> How does a cluster work with a central (huge) database? What are
> typical clusters storage methods?


The best (and most expensive) method for a database cluster is a Windows
2000 Datacentre Server Active-Passive configuration with a shared fibre
channel storage array that has a RAID 0+1 configuration. You will need four
big powerful servers, a big storage array and a fibre channel hub.
>
> OK, all your MCSEs, show me your stuff !!!
>
>
>
>
>
> -bobb
>



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Old Post 06-28-02 09:06 PM
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diamondDan
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Re: Want to know about Servers Clustering

In article <afdgvs$j07$1@newsg2.svr.pol.co.uk>, Batman decided to open
his big watermellon eating lips and remove all doubt by saying

Why waste money and time

if you want to get certified don't waste your time studying...passs the
Desperate Dan way braindumps !!!! I got no life N.L.D. no life Dan I spend
my days studying ISP policies so I can brag that I 'flamed someone i dont
even know hahaha im so clever'
go for it kid
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"Simon Geary" <simon_geary@hotmail.com> wrote in message
news:YJgo8.1078$pA6.550865@news6-win.server.ntlworld.com...
>
> > I am looking for a book/resource/web link for an excellent, concised
> > explanation of Microsoft Servers Clustering.
> >

> What ever you do, don't buy the MOC book for the clustering exam. It

sucks.
> Cluster books are few and far between, try the David Libertone book or see
> hear:
> http://www.microsoft.com/NTServer/S..._faq.asp?RLD=36
>
> > I am more interested in high level concepts and just enough technical
> > details.
> >
> > For example, I want to know how clustering work with applications. How
> > does an application recover from a single server failure in a cluster?

>
> Generally speaking, the application is installed on each server and the

data
> is stored on a shared hard drive (The shared device configuration) Servers
> send heartbeats to each other, when one server fails, the other can take
> over. (Active-Passive configuration) If the shared drive fails you are
> stuffed. There are other configurations you could use though.
> >
> > Do Applications have to be "cluster-compatible?" or can you just throw
> > in any application to it and expect it to work?

>
> For optimum use, applications must be 'cluster aware' like SQL 200
> Enterprise and Exchange 2000 Enterprise. But some applications will work
> with a cluster anyway if you use the built in 'Application' resource, but
> strange things can happen when you do this, so don't use it. If you are

dead
> clever, you can write your own cluster API.
> >
> > How (if) clustering set up/ work in a web-farm environment?

>
> You tend not to use clustering for web farms, use NLB instead. For any
> database servers behind the web site, use clusters. For any web

aplications,
> use Application Centre 2000.
> >
> > How does a cluster work with a central (huge) database? What are
> > typical clusters storage methods?

>
> The best (and most expensive) method for a database cluster is a Windows
> 2000 Datacentre Server Active-Passive configuration with a shared fibre
> channel storage array that has a RAID 0+1 configuration. You will need

four
> big powerful servers, a big storage array and a fibre channel hub.
> >
> > OK, all your MCSEs, show me your stuff !!!
> >
> >
> >
> >
> >
> > -bobb
> >

>
>



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