Re: cluster hardware

Hello,

You should try as much as possible to have equal setups.

The quality of the disk setup on the data nodes will effect Local Checkpoints, Global Checkpoints, Backups and Recovery operations, basically anything I/O related.

You might want to check out the new Cluster Evaluation Guide which walks through some fundamentals around design choices.

http://www.mysql.com/why-mysql/white-papers/mysql_cluster_eval_guide.php

The Management Node only performs administrative tasks like backups, dispensing configuration info and arbitration services by default. It does not help balance load or anything like that.

Good luck with the cluster eval, let us know how it goes.

Thanks,

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Jimmy

B. Keith Murphy wrote:
> Being a newbie to clusters this might be a dumb question. I haven't seen it directly answered anywhere so I am going to venture out on a limb and ask...
>
> I understand that each data node in a cluster needs the same amount of RAM . However, how will different cpu counts/hard drive setups and such affect the performance. Not talking celeron vs/quad core, but some systems might have raid and four cores while some might not have raid and only have two cpus. Does the management node monitor things and distribute the nodes or should I try as hard as I can to have equal hardware on the boxes?
>
> thanks,
>
> Keith

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