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How identical does RAC nodes has to be?

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  #1  
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charles
 
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Default How identical does RAC nodes has to be? - 12-22-2010 , 02:05 PM






We are trying to add a new node to our existing cluster.

The new node has 4x8c, while the existing ones have 4x4, definitely
different chip sets.

Does not matter? Can we mix those two kinds of server together?

Thanks for your help

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joel garry
 
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Default Re: How identical does RAC nodes has to be? - 12-22-2010 , 04:32 PM






On Dec 22, 12:05*pm, charles <dshprope... (AT) gmail (DOT) com> wrote:
Quote:
We are trying to add a new node to our existing cluster.

The new node has 4x8c, while the existing ones have 4x4, definitely
different chip sets.

Does not matter? *Can we mix those two kinds of server together?

Thanks for your help
FWIW, 2-day RAC ( http://download.oracle.com/docs/cd/B...ntro_tdprc.htm
and http://download.oracle.com/docs/cd/E.....htm#TDPRC118
) says:
"Oracle RAC does not support machines having different chip
architectures in the same cluster. However, you can have machines of
different speeds and sizes in the same cluster."

Whatever that means. And we all know how 2 day DBA's are always right
and never lie.

jg
--
@home.com is bogus.
As Larry Ellison once said “Success is not enough, you need to see
others fail”.

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  #3  
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onedbguru
 
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Default Re: How identical does RAC nodes has to be? - 12-25-2010 , 10:34 AM



On Dec 22, 5:32*pm, joel garry <joel-ga... (AT) home (DOT) com> wrote:
Quote:
On Dec 22, 12:05*pm, charles <dshprope... (AT) gmail (DOT) com> wrote:

We are trying to add a new node to our existing cluster.

The new node has 4x8c, while the existing ones have 4x4, definitely
different chip sets.

Does not matter? *Can we mix those two kinds of server together?

Thanks for your help

FWIW, 2-day RAC (http://download.oracle.com/docs/cd/B...8252/intro_tdp...
andhttp://download.oracle.com/docs/cd/E11882_01/rac.112/e17264/intro_tdp....
) says:
"Oracle RAC does not support machines having different chip
architectures in the same cluster. However, you can have machines of
different speeds and sizes in the same cluster."

Whatever that means. *And we all know how 2 day DBA's are always right
and never lie.

jg
--
@home.com is bogus.
As Larry Ellison once said “Success is not enough, you need to see
others fail”.
It means that you can not mix a PowerPC with Intel or Intel with
Solaris as these actually use different binary sets and Endian-ness
may come into play as well -- I am not completely sure about Intel vs
AMD.

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  #4  
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onedbguru
 
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Default Re: How identical does RAC nodes has to be? - 12-25-2010 , 10:37 AM



On Dec 22, 3:05*pm, charles <dshprope... (AT) gmail (DOT) com> wrote:
Quote:
We are trying to add a new node to our existing cluster.

The new node has 4x8c, while the existing ones have 4x4, definitely
different chip sets.

Does not matter? *Can we mix those two kinds of server together?

Thanks for your help

The identical in network device names, PCI slots etc as these can mess
with device naming in the system. All device names (network, hba
etc...) should be identical.

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