The IT department receives a client request to build multiple file server instances. Which of the following is the MOST efficient way for a cloud systems administrator to fulfill this request?

Building file server instances with an OEM DVD is a manual, time-consuming process for each server and is not efficient for deploying multiple instances.

Restoring a base image from backup is primarily for disaster recovery or creating a single instance from a known state, not the most efficient method for building multiple new instances, especially when a template offers more control over initial configuration.

Using a file server template allows an administrator to quickly and consistently deploy multiple instances with predefined configurations, operating systems, and applications, making it the most efficient method for repetitive server builds. Templates streamline the provisioning process and reduce errors compared to manual builds.

Building server instances using a boot from a SAN image refers to the method of loading the operating system from network-attached storage, which is a detail of provisioning but less encompassing of the overall efficient, consistent deployment of multiple configured servers than using a template.