Back up cloud data and confirm that it can be restored after a failure.
Which backup practice is appropriate?
Backups require restore tests, retention, access control, and copies separated from the primary failure domain.
Detailed explanation
Incorrect. Without restore tests, corruption or permission failures may remain hidden.
Incorrect. Without restore tests, corruption or permission failures may remain hidden.
Correct. A successful backup job is not enough; restore and protection must also be verified.
Correct. A successful backup job is not enough; restore and protection must also be verified.
Incorrect. A single disk in the same failure domain can lose the source and backup together.
Incorrect. A single disk in the same failure domain can lose the source and backup together.
Incorrect. A bucket anyone can delete is vulnerable to accidental deletion and leakage.
Incorrect. A bucket anyone can delete is vulnerable to accidental deletion and leakage.
Try it yourself
An example you can run in a temporary verification environment.
printf '%s\n' 'backup success is not recovery proof until restore is tested'Expected result
backup success is not recovery proof until restore is testedKey points
- Restore test
- Retention
- Separated copy
Notes
- Environment: クラウドバックアップ運用の概念確認
- Command output formatting can vary slightly by distribution or tool version.
- Run the example in a temporary directory or process when possible.
Foundation review
Read the scope first
Check whether the command acts on the current shell, a new process, an existing process, or a file.
Verify the observable result
Use the supplied command and compare the output with the expected result.