Hello Alp Arslan,

What is your current onefs version?  Here is a link to a kb that explains more about how the chimers work. https://dell.to/3nNNd5O

Dear Sir,

I'm preparing for PowerScale IE exam and found conflict on this statement in study material. Both statements are totally reciprocal of each other.

Is it official study material that has conflicting statements? What does it say?

Yes, it's an official document. I'll share screen with you.

Below are statements..

1. By default, If the cluster has more that three nodes, three of the nodes are selected as chimers. 

2. If the cluster four nodes or less, only one node is selected as a chimer.

Hi @DELL-Sam L and @DELL-Josh Cr,

Could you please help me understand the mentioned statement?

It says if the cluster > 3 nodes then 3 nodes are selected as chimers. At the same time, it says if the cluster =< 4 nodes only one node is selected as a chimer.

Sorry guys, I'm still confused

Thanks,

Hi Almonthiry

This may be the case of the study material content have not have been updated (or this question may have been missed).

By default, a cluster has three chimer nodes. Chimer nodes are the three lowest LNNs in the cluster. If a chimer node goes offline, the node with the next-lowest LNN takes its place. In a 3-node cluster, there is only one chimer node (the node with the lowest LNN).

So I would say based on that, the following assumptions:

Cluster nodes =< 4 would be Gen 4/5 nodes (where 3 physical nodes is the minimum required to form a cluster) or a simulator instance.

Cluster nodes > 4 would be Gen 6+ nodes (where 4 physical nodes is the minimum required to form a cluster).

Let me know if that helps..

Cheers..