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Storage for VM's

  • 15 May 2015
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I am curious as to how you scale storage when not needing extra compute power. For instance, lets say I have 2 nodes and am running under VMware. On those nodes I have a total 10 VM's and 3 need lots of storage. I have configured the 2 nodes with the max number and size HD's they can handle.

Now, the 10 VM's in total need more storage than can even be configured in the 2 nodes. Do I have to purchase more nodes just to get the additional storage?

Thanks

Robert
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Best answer by tonyholland00 22 May 2015, 22:51

Yes storage of the entire cluster would need to be consumed before you would need more storage. But if that is the case you can add a "Cold Storage" node 6035-C which runs KVM for our Controller VM. It has minimal CPU and RAM as you will not run any guest VM's it only runs our CVM and provides cold storage.

Tony
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Well, for starters, the minimum number of nodes in a cluster is 3.
Regarding the actual question, during the design/planning phase with your SE, the needs for the environment should have been laid out (i.e. VM size, # of vCPU, VM Memory), so you don't end up with an undersized system. This is true for traditional, converged and hyperconverged solutions.
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Thank you for the reply.

I just through out a hypothetical issue and am just starting to investigate and understand Nutanix. So fair enough, it requires a minimum of three nodes.

So my question still stands, if I now have three nodes, and the amount of storage space required of a VM exceeds the maximum storage capability of a single node, is space on a different node accessible to the node the VM is on, or can extra storage be attached? Is the max storage on a node a limitation of the Nutanix infrastructure because you cannot add more storage other than what is internal?

Just questions I have about scaling with Nutanix.
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Space isn't limited to the local node.

There are new space-only expansion node options available, I believe thats what they are using the 6035-C series model # for now (hence the low 32GB RAM and single hex-core).
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Yes storage of the entire cluster would need to be consumed before you would need more storage. But if that is the case you can add a "Cold Storage" node 6035-C which runs KVM for our Controller VM. It has minimal CPU and RAM as you will not run any guest VM's it only runs our CVM and provides cold storage.

Tony

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