What Is RTO (Recovery Time Objective)?

RTO — Recovery Time Objective — is the maximum acceptable time that a business can be without a critical IT system or process after a disaster or outage. If your RTO for email is 4 hours, your recovery plan must be able to restore email within 4 hours of a failure. RTO is one of the two foundational metrics for disaster recovery planning alongside RPO (Recovery Point Objective). Both must be defined before you can evaluate whether your backup and disaster recovery (BDR) solution is adequate.

RTO vs. RPO: what's the difference?

• RTO: how long can we be without this system? (time measure) — "We can operate without CRM for 4 hours, but not without email for more than 1 hour"
• RPO: how much data can we afford to lose? (data measure) — "We can lose at most 1 hour of accounting transactions before the data loss is unacceptable"
• Relationship: RTO drives recovery architecture (failover systems, cloud standby); RPO drives backup frequency (hourly backups require different infrastructure than daily backups)

How to set RTO for your Canadian business

RTO should be set based on business impact — what does an hour of downtime actually cost? Consider:

• Revenue impact: for a payment processor or ecommerce business, 1 hour of downtime may cost $10,000+; for a professional services firm, it may be tolerable for half a day
• Regulatory obligations: some regulated businesses (financial institutions, healthcare) have regulatory expectations around system availability
• Customer commitments: if your SLA to customers requires 99.9% uptime, your RTO must be measured in minutes, not hours
• Operational dependencies: what systems cannot be down simultaneously? If both email and your ERP are down, which has the lower RTO?

Technology requirements for different RTO targets

• RTO of hours (2-8 hours): standard backup restoration from cloud or local backup; restore to new hardware or virtual machine; adequate for most SMBs
• RTO of 1 hour: local backup appliance (Datto SIRIS, Veeam with local target) with instant VM spin-up capability; frequent backup testing required
• RTO of 15-30 minutes: hot standby environment; synchronous replication; cloud-based disaster recovery-as-a-service (DRaaS); continuous replication
• RTO of minutes: active-active redundancy; geographic load balancing; enterprise-grade infrastructure; typically only required for business-critical applications in financial services or healthcare

RTO and Canadian regulatory requirements

Several Canadian regulatory frameworks specify or imply RTO expectations:

• OSFI B-13: federally regulated financial institutions must define RTOs for critical systems and test their ability to meet them regularly
• PHIPA: Ontario healthcare organizations must ensure continuity of access to patient records; prolonged downtime of EHR systems raises compliance concerns
• PIPEDA: while PIPEDA doesn't specify RTO, prolonged system unavailability that prevents individuals from accessing their personal information may raise compliance questions

Related glossary terms

• RPO — Recovery Point Objective
• BDR — Backup and Disaster Recovery
• SLA — Service Level Agreement
• MSP — Managed Service Provider
• Ransomware

How Outsource IT Canada can help

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