Which backup method is performed while the system remains online and accessible?

Which backup method is performed while the system remains online and accessible?

• A. Hot Backup (Online)
• B. Cold Backup (Offline)
• C. Warm Backup (Nearline)
• D. Snapshots (Offline)

Answer: (A)

Online backups are performed while the system is up and serving users. The backup process must capture a consistent state without taking the system offline, often by using techniques like transaction logs, quiescing certain operations, or filesystem snapshot capabilities that provide a point-in-time copy. This keeps the service available and accessible throughout the backup window, which is essential in environments that require continuous operation. The other options entail taking the system offline or aren’t inherently designed to keep services fully online, so they don’t fit the scenario as well.

Online backups are performed while the system is up and serving users. The backup process must capture a consistent state without taking the system offline, often by using techniques like transaction logs, quiescing certain operations, or filesystem snapshot capabilities that provide a point-in-time copy. This keeps the service available and accessible throughout the backup window, which is essential in environments that require continuous operation. The other options entail taking the system offline or aren’t inherently designed to keep services fully online, so they don’t fit the scenario as well.