Joe, a systems administrator, is setting up a risk management plan for the IT department. Part of the plan is to take daily backups of all servers. The server backups will be saved locally to NAS. Which of the following can Joe do to ensure the backups will work if needed?
A. Frequently restore the servers from backup files and test them
B. Configure the backups to restore to virtual machines for quick recovery
C. Set up scripts that automatically rerun failed backup jobs
D. Set up alerts to let administrators know when backups fail
E. Store copies of the backups off-side in a secure datacenter
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Backup software usually has a validate option to compare the finished backup to the actual files to ensure they match exactly. I believe the correct answer is D.
Nowhere is their mention of a need to recover quickly. More importantly backups wouldn’t restore faster to a VM than they would to a PC – it would be speed limited by the interface the backup device uses. (i.e. SATA3, USB2.0 etc.) so read speed of the device matters here.
B – Configure the backups to restore to virtual machines FOR QUICK RECOVERY – seems to imply that recovery will be to the VM server instead of the failed server. But the question doesn’t say that recovery MUST be to the original server.
Not A – Frequently restore the servers from backup files and test them – so they would be FREQUENTLY offline.
Not C – rerunning failed backup jobs doesn’t guarantee that the backup will succeed on the next attempt.
Not D – this answer says alerts “when backups fail” – doesn’t say when “backup JOBS fail” – says “when backups fail.”
Not E – Although a best practice, storing copies of the backups off-site won’t ensure that the backups will work.
D – The question says “ensure the backups will work if needed” — the only way to ensure a backup will actually work is to periodically test it – best done on a virtual machine configured identical to the actual server that was backed up. But the answer choices don’t offer that option.
Not (A) — It’s impractical to frequently restore the servers to test the backups. So next best thing is to issue a notification if any backup job fails. Then you will know that particular backup would not work to do the restore.