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VM Sizing requirement

Solved905 views13th March 2023node calculator redundancy virtual machines
7
Kemaine lee Lara [DevOps Advocate]20 13th March 2023 0 Comments

Hello,

We are planning to build the DMA on virtual environment. We used the Node Calculator to get the estimated resources required on our project.

May someone advise if my understanding below is correct.

  • For DMA high-availability we need 4x DMA node + 4x DMA node is this correct?
  • For Cassandra and Elastic Search, do we need also to duplicate the VM similar to above DMA? or we can have 3x Cassandra VM and 4x Elasticsearch VM then from the Hypervisor we can provision the redundancy.

Bruno Dias [SLC] [DevOps Member] Answered question 13th March 2023

1 Answer

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Bruno Dias [SLC] [DevOps Member]2.36K Posted 13th March 2023 1 Comment

Hey Kemaine,

To have a DMA failover (one DMA team up with a backup server, which is constantly in sync, so it's ready to take over if the online DMA fails), you always need a pair of DMAs, so if your DataMiner cluster is designed to have 4 running DMA, you will need 4+4 DMAs to team up in a failover pair.

About Cassandra and Elasticsearch, if you configure this as separated clusters from DataMiner, you only need at minimum 3 nodes on each cluster to provide you redundancy, in case one of them fails.

I recommend you this docs page where the supported architecture for storage are described: Supported system data storage architectures | DataMiner Docs

Bruno Dias [SLC] [DevOps Member] Edited answer 13th March 2023
Kemaine lee Lara commented 13th March 2023

Hi Bruno,

thank you for your response. I will check the Docs you have recommended.

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