Scaling up or scaling out

Once the total CPU and memory resource requirements have been calculated, the amount of resources per host must be determined. Host resources can be designed based on two resource-scaling methodologies, scaling up or scaling out.

When scaling up, fewer, larger hosts are used to satisfy the resource requirements. More virtual machines run on a single host; because of this, more virtual machines are also affected by a host failure.

When scaling out, many smaller hosts are used to satisfy the resource requirements. Fewer virtual machines run on a single host, and fewer virtual machines will be affected by a host failure.

How to do it…

  1. Determine whether the host in the environment should scale up or scale out.
  2. Determine the ...

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