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N+1 in mixed cluster

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Outrider

N+1 in mixed cluster

If I add one additional node with 512 GB ram to my existing cluster which consisit of 3 nodes of 256 GB each, how N+1 will be calculated?

Thanks
Vivek
1 ACCEPTED SOLUTION

Accepted Solutions
Vanguard

Re: N+1 in mixed cluster

From @aluciani earlier post

http://next.nutanix.com/t5/Nutanix-Connect-Blog/Episode-1-Acropolis-Hypervisor-VM-HA-Part-2/ba-p/559...

 

When all the nodes in a Nutanix cluster have the same amount of memory, “Reserved Host” policy leads to least overhead for failover capacity in most cases and will be preferred. When some nodes in a cluster have more memory than others, depending on the sizes of the VMs enabled for VM-HA  “Reserved Segments” policy may lead to lower overhead and is preferred.

3 REPLIES
Vanguard

Re: N+1 in mixed cluster

vsphere or AHV?

Outrider

Re: N+1 in mixed cluster

AHV
Thanks
Vivek
Vanguard

Re: N+1 in mixed cluster

From @aluciani earlier post

http://next.nutanix.com/t5/Nutanix-Connect-Blog/Episode-1-Acropolis-Hypervisor-VM-HA-Part-2/ba-p/559...

 

When all the nodes in a Nutanix cluster have the same amount of memory, “Reserved Host” policy leads to least overhead for failover capacity in most cases and will be preferred. When some nodes in a cluster have more memory than others, depending on the sizes of the VMs enabled for VM-HA  “Reserved Segments” policy may lead to lower overhead and is preferred.