Which of the following is the BEST recovery method for a server that only aggregates report data and stores data on separate servers?

A full backup is a method of backing up data, but disk imaging is specifically designed for rapid bare-metal system recovery, which is more critical for a stateless aggregation server.

Disk imaging is the best recovery method for a server that only aggregates report data and stores data on separate servers because it captures the entire operating system, applications, and configuration into a single file. This allows for rapid bare-metal recovery, restoring the server to an operational state quickly without needing to reinstall the OS and applications from scratch, which is ideal when data itself resides elsewhere.

An incremental backup saves only changes since the last backup and is focused on data protection, not the quickest system recovery of the OS and applications.

Tape backup is a storage medium for backups, not a recovery method itself, and could be slower than disk imaging for system restoration, especially for a bare-metal recovery.