about cluster

  • let me know if there is any risk to removing a node from the SQL instances on the cluster…they need to get the hardware there is nothing currently running on node2 but there is a live DB running on node1

    They need to have the hardware removed from node 2. this is active/passive senario.

    I can take care of suspending backups and monitoring – but want to know the risk involved and if it can be done live….of removing this server from the cluster…what affect does it have on the other node?

  • - you need to keep in mind it takes +- 30 seconds to fail over a sql instance.

    - Applications will have to reconnect.

    - Let's hope your applications can cope with this 30sec unavailability.

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  • Is thier anyway i can make node 2 offline and upgrade hardware.

  • Yes. Log into node 1 and open Windows Cluster Administrator. Enter the cluster name and connect to it. Click on the Cluster Group and make sure Node 1 is the Owner. If not, right click on the Cluster Group and click Move Group to fail it over to Node 1.

    Since Node 2 is now the passive node you can take it down and upgrade the hardware.

  • what will happen if the node one goes down in case of upgrading hardware at node 2, how the failove works at that time.

  • the failover will not work until the cluster admin can failover to an available active node

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