Backup is not Disaster Recovery: RTO, RPO and a second site in practice

How to distinguish backup from a DR plan for company servers, ERP, mail, databases and online services.

Fresh 2026 guide

Backup is not Disaster Recovery: RTO, RPO and a second site in practice

Backup answers whether data exists. Disaster Recovery answers how fast the company can work again. DR needs RPO, RTO, an alternate environment, network, DNS, access, procedure and a test, not only a catalogue of copies.

Short answer

Backup answers whether data exists. Disaster Recovery answers how fast the company can work again. DR needs RPO, RTO, an alternate environment, network, DNS, access, procedure and a test, not only a catalogue of copies.

Backup protects data

Backup has retention, schedule, encryption, reports and restore tests. But it may say nothing about where and how to start the application after an incident.

DR protects the process

Disaster Recovery covers service startup order, minimum resources, network, DNS, firewall, VPN, accounts, certificates, communication and the failover decision.

RPO and RTO plainly

RPO says how much data can be lost, while RTO says how long a service can be unavailable. Define them separately for ERP, mail, files and web.

Second site

DataHouse can act as the second site: backup repository, Cloud Pro, dedicated servers, colocation, private cloud or a private colocation room.

Practical checklist

  1. Split systems into critical, important and helper groups, and assign a business owner to each.
  2. For every system define RPO, RTO, minimal resources, dependencies, accounts and emergency contact path.
  3. Check backup: retention, encryption, monitoring, restore testing and deletion protection.
  4. Design the DR environment: network, DNS, firewall, VPN, addressing, certificates and service startup order.
  5. Test the scenario at least partially and record real recovery time and missing decisions.

Frequently asked questions

Is backup enough as Disaster Recovery?

Not always. If a system must recover quickly, you need a service, network, DNS, access and responsibility startup plan, not only a data copy.

Which matters more: RPO or RTO?

Both matter, but different systems can have different values. An ERP database can need different RPO/RTO than a website or a document archive.

Must the second site be a full production copy?

Not always. It can be a backup repository, standby environment, private cloud, dedicated server, colocation or a staged model based on service criticality.