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Frequently Asked Questions

General​

What is Tergum?​

Tergum is an automated high-availability failover service for WordPress. It keeps a synchronized backup of your site ready to take over if your main server fails.

How fast is failover?​

Typically 1-3 minutes from outage detection to traffic redirected to backup. Detection takes 60-90 seconds, DNS update is near-instant, propagation varies by visitor.

Does it work with any hosting provider?​

Yes, as long as you have root SSH access. Works with VPS, dedicated servers, cloud instances, and even home servers behind NAT.

Setup​

Do I need two servers?​

Yes. You need a master (your current WordPress server) and a slave (backup server). The slave can be a small VPS—it only needs to handle traffic during failover.

Can the slave be a different hosting provider?​

Yes! This is actually recommended for true redundancy. Your slave can be at a different provider, in a different region.

What if my slave is behind NAT?​

No problem. Cloudflare Tunnel provides public access without port forwarding.

Technical​

How much bandwidth does replication use?​

Very little for ongoing sync—typically a few KB/s. The initial clone depends on your WordPress size.

Will failover cause data loss?​

Potentially a few seconds of data if changes were made between the last sync and the outage. Replication lag is typically under 10 seconds.

Can I test failover without affecting my live site?​

Yes! You can manually trigger a test failover from the dashboard. Your master keeps running; only DNS changes.

Billing​

Is there a free trial?​

Contact us for trial options.

Can I cancel anytime?​

Yes, subscriptions can be cancelled anytime from the dashboard.

What happens to my servers if I cancel?​

Your servers continue running normally. The agents stop reporting, and automatic failover is disabled. You should uninstall the agents.