Cluster Utilization Buffer / Performance Buffer / Avg-Max Throughput / Latency Profile

As mentioned in the docs, the calculator could use one of the following:

• high-level:

  • latency profiles: some sort of pre-made latency profiles which chooses "low latency < 100ms", med latency "< 250ms p99" and etc. Then, the calculator chooses the right disk and buffer based on that.

  • avg-max throughput: allow users to define their avg throughput for cost calculating purposes (e.g network charges) but configure a max that the cluster must be able to support without trouble at all times

• low-level:

  • an IOPS utilization buffer. e.g ensure we only use 50% of provisioned IOPS