topic Re: Failover and Giveback in a Four Node Cluster in ONTAP Discussions

Failover and Giveback in a Four Node Cluster

TMADOCTHOMAS — Wed, 04 Jun 2025 15:30:00 GMT

Tonight I need to perform our first failover and giveback since switching from a two node to a four node cluster. Any special considerations, especially as it relates to epsilon and quorum? We are on 8.3.2 P5.

Re: Failover and Giveback in a Four Node Cluster

Naveenpusuluru — Wed, 01 Feb 2017 15:49:24 GMT

Hi @TMADOCTHOMAS

Beforing performing takeover please make sure that you are aware of epsilon.

You can not takover the node which contains epsilon. By using below commands u wll come to know which node is hosting epsilon.

set adv

cluster show

You need to move the epsilon from the node which you are planning to tak over.

Also please take a look at CFO and SFO.

Please make sure that all the aggregates are came back to original node while you are perfroming give back using below command.

storage failover show-giveback

Make sure that you conncted to console or service processor.

Re: Failover and Giveback in a Four Node Cluster

TMADOCTHOMAS — Wed, 01 Feb 2017 15:58:12 GMT

Thank you Naveen!

Re: Failover and Giveback in a Four Node Cluster

Naveenpusuluru — Wed, 01 Feb 2017 16:05:39 GMT

Hi @TMADOCTHOMAS

This might help you to change epsilon

cluster modify -node node01 -epsilon false

cluster modify -node node02 -epsilon true

Re: Failover and Giveback in a Four Node Cluster

TMADOCTHOMAS — Tue, 07 Feb 2017 14:19:37 GMT

Thank you!