A company has just implemented a disaster recovery plan in which critical business must be restored in a four hour window. Which of the following methods should be used to backup the servers?

Incremental backups require a full backup and all subsequent incremental backups to be restored, which is a time-consuming process and would likely exceed a four-hour RTO.

Data-only backups would not include the operating system or application configurations, making a full server restoration much longer and more complex than a four-hour window allows.

SAN replication provides a highly available and rapid recovery solution by continuously replicating data between storage arrays, often in real-time or near-real-time. This allows for very low recovery point objectives (RPO) and recovery time objectives (RTO) because it often involves failing over to a live replica rather than restoring from backup files.

While a full backup captures all data, the process of restoring an entire server from a full backup, especially for multiple critical systems, typically takes significantly longer than four hours.