What is the benefit of using Allow Quick Boot during host updates on supported hardware?

Which vSphere APIs support storage hardware acceleration?

A vSphere administrator wants to ensure provisioned virtual machine storage objects are allocated to guarantee a service level agreement.
Which feature would accomplish this?

Which feature allows a vSphere administrator to reduce power consumption on a cluster?

An administrator runs a vSphere cluster containing database VMs with extremely heavy disk I/O. Database VMs are placed on a costly all-flash array.
The workloads are not memory intensive.
How can the administrator ensure the most cost-effective utilization of the all-flash storage array?