Disaster recovery planning in SCADA systems - Step-by-Step Execution

Process Flow - Disaster recovery planning

Identify Critical Systems

↓

Assess Risks & Threats

↓

Define Recovery Objectives

↓

Develop Recovery Strategies

↓

Create Recovery Plan Document

↓

Test & Validate Plan

↓

Update Plan Regularly

↓

Ready for Disaster

This flow shows the step-by-step process of disaster recovery planning, from identifying critical systems to being ready for disaster.

Execution Sample

SCADA systems

1. Identify critical SCADA components
2. Assess risks (power failure, cyberattack)
3. Set recovery time objectives (RTO)
4. Plan backup and failover methods
5. Document and test the plan

This sample outlines the main steps in creating a disaster recovery plan for SCADA systems.

Process Table

Step	Action	Details	Result
1	Identify critical systems	List SCADA servers, network devices, sensors	Critical components listed
2	Assess risks	Consider power loss, hardware failure, cyber threats	Risk list created
3	Define recovery objectives	Set RTO = 2 hours, RPO = 15 minutes	Recovery goals set
4	Develop strategies	Plan backups, redundant power, failover servers	Recovery methods planned
5	Document plan	Write step-by-step recovery procedures	Plan documented
6	Test plan	Simulate power failure and recovery	Plan validated
7	Update plan	Incorporate test feedback and new risks	Plan updated
8	Ready for disaster	Plan is current and tested	System prepared for disaster

💡 All steps completed; disaster recovery plan is ready and validated

Status Tracker

Variable	Start	After Step 1	After Step 2	After Step 3	After Step 4	After Step 5	After Step 6	After Step 7	Final
Critical Systems	None	Listed	Listed	Listed	Listed	Listed	Listed	Listed	Listed
Risk List	None	None	Created	Created	Created	Created	Created	Updated	Updated
Recovery Objectives	None	None	None	Set (RTO=2h, RPO=15m)	Set	Set	Set	Set	Set
Recovery Strategies	None	None	None	None	Planned	Planned	Planned	Planned	Planned
Plan Document	None	None	None	None	None	Written	Written	Updated	Updated
Plan Tested	No	No	No	No	No	No	Validated	Validated	Validated

Key Moments - 3 Insights

Why do we set recovery time objectives (RTO) and recovery point objectives (RPO)?

RTO and RPO define how quickly and how much data loss is acceptable during recovery. This guides the planning in step 3 and affects backup and failover strategies in step 4, as shown in the execution_table rows 3 and 4.

Why is testing the disaster recovery plan important?

Testing (step 6) ensures the plan works in real scenarios and reveals gaps. Without testing, the documented plan might fail during an actual disaster, as seen in execution_table row 6.

Why must the disaster recovery plan be updated regularly?

Systems and risks change over time. Updating the plan (step 7) keeps it effective and relevant, as reflected in the variable_tracker where the plan document and risk list are updated after testing.

Visual Quiz - 3 Questions

Look at the execution_table, at which step is the disaster recovery plan first documented?

A Step 5

B Step 4

C Step 6

D Step 7

💡 Hint

Check the 'Action' and 'Result' columns in execution_table row 5.

According to variable_tracker, when is the risk list first created?

A After Step 1

B After Step 3

C After Step 2

D After Step 4

💡 Hint

Look at the 'Risk List' row and see when it changes from 'None' to 'Created'.

If the plan is not tested, which variable in variable_tracker remains 'No'?

A Plan Document

B Plan Tested

C Recovery Objectives

D Recovery Strategies

💡 Hint

Check the 'Plan Tested' row in variable_tracker and see when it changes to 'Validated'.

Concept Snapshot

Disaster Recovery Planning Steps:
1. Identify critical SCADA systems
2. Assess risks and threats
3. Define recovery objectives (RTO, RPO)
4. Develop backup and failover strategies
5. Document and test the plan
6. Update regularly to stay effective

Full Transcript

Disaster recovery planning for SCADA systems involves identifying critical components, assessing risks like power failure or cyberattacks, and setting recovery goals such as recovery time objective (RTO) and recovery point objective (RPO). Next, strategies like backups and failover servers are planned. The plan is then documented in detail and tested through simulations to ensure it works. Finally, the plan is updated regularly to adapt to new risks or system changes. This process prepares the system to recover quickly and safely from disasters.