6 messages in com.mysql.lists.clusterRe: Storage node groups
FromSent OnAttachments
Aslan Carlos20 Mar 2007 14:06 
Alex Davies20 Mar 2007 19:45 
Christiaan den Besten21 Mar 2007 04:03 
Aslan Carlos21 Mar 2007 11:37 
Alex Davies21 Mar 2007 17:46 
Aslan Carlos21 Mar 2007 20:02 
Subject:Re: Storage node groups
From:Alex Davies (al@davz.net)
Date:03/20/2007 07:45:53 PM
List:com.mysql.lists.cluster

Hi,

I think I understand what you are asking.

To ensure that all nodes have all data, you simply have to ensure that the number of replicas is equal to the number of nodes - i.e. 2 replicas in a 2 node cluster. In this scenario, both nodes will hold 100% of the data and either can fail without a problem.

This however will remove some of the performance advantage of a cluster, and will realistically prevent you from storing massive amounts of data in a cost efficient way.

Alex

On 20/03/07, Aslan Carlos <asl@digirati.com.br> wrote:

Hi Community,

I have a question about the node storage group..

I did some tests which I removed all nodes in the same storage group, but the cluster stop when I did this. So my nodes group have 2 node storage ( replica 2 ) .

There a way to do the cluster don't stop when it lost one storage group?

For example: I'm using shared-nothing nodes, well if 2 nodes has some problem, maybe hardware fail, and they is in the same storage group, my cluster go down. so the HA fail in this point.

This don't make sense for me and I don't found any answer about this in nowhere.

How could I make one big group , where all nodes has 100% of data fragments?

Sorry, English isn't my natural language, if anybody don't understand, I'll try to be more clear.

Thanks in avanced.

-- Aslan Carlos de M. Ramos Network Administrator K8 Networks, Digirati Networks Tel: +55(21)2233-5950 Ramal:29 Skype: aslancarlos

-- Alex Davies // http://www.davz.net

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