What accurately describes ITaaS?

When designing for large addressing space in HCI nodes, what operations(s) negatively impacts cost of performance?

A cloud architect has included a monitoring application in a cloud design to ensure infrastructure performance meets agreed-upon service levels. The application resides on a virtual appliance.
The application vendor provides guidance for sizing the appliance.
What will be part of the sizing calculations for the virtual appliance storage?

Which are considerations when designing for high availability in a cloud infrastructure using virtual machines?
(Select all that apply)

What is a key component of a disaster recovery (DR) plan for a cloud-based application?