What needs to be set to keep your logs after a reboot or power failure?

• A. Save to disk
• B. Email on failure
• C. Print to console
• D. Disable logging

Answer: (A)

Logs are stored in memory by default, so they’re lost when the device reboots or loses power. To keep them, you must write them to non-volatile storage like the device’s disk. In RouterOS this means configuring a logging action that targets disk and directing your log messages to a file on disk. Once written there, the logs survive reboot and power failures, letting you review what happened later.

Emailing on failure only sends a copy somewhere else and doesn’t guarantee retention on the device after a reboot. Printing to the console shows logs live but they’re not saved across restarts. Disabling logging stops all log entries from being created in the first place, so nothing would be retained anyway.