A denial-of-service attack represents the evasion technique of resource exhaustion, where the attacker overwhelms a system's resources, making the system unusable and unable to handle legitimate requests.
References := Cisco Cybersecurity Source Documents

Full packet capture requires the largest amount of storage space because it involves recording all packets that pass through a network, including all headers and payloads. This type of data collection is comprehensive and allows for detailed analysis, but due to the volume of data it encompasses, it demands significant storage capacity1.
References := The Cisco Secure Network Analytics Data Store Design Guide discusses the storage requirements for different types of network data collection, highlighting the substantial storage needs for full packet captures1.