• April 20 2026

CyberArk DR Drill: Failover and Failback Process Explained (2026 Guide)

Learn CyberArk Disaster Recovery (DR) Drill, including Automatic and Manual Failover, Failback process, PADR.ini configuration, and real-time scenarios in this complete guide.

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🚀 Introduction to CyberArk DR Drill

CyberArk Disaster Recovery (DR) Drill is a critical activity in CyberArk used to ensure business continuity.

👉 It validates whether:

• DR Vault can take over as Primary Vault

• System continues to function during failures

💡 In simple terms:
👉 “What happens if Primary Vault goes down?”

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🎯 Why DR Drill is Important

Without DR Drill:
❌ No assurance of failover readiness
❌ Risk of downtime during outages
❌ Possible data inconsistency

👉 DR Drill ensures:
✔ High availability
✔ Business continuity
✔ Data protection

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🧱 CyberArk DR Architecture Overview

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📌 Basic Setup

• Primary Vault → Active

• DR Vault → Standby

👉 DR Vault continuously replicates data from Primary

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🔄 DR Drill Concept

👉 We simulate failure:

1. Stop Primary Vault

2. Check if DR becomes Active

3. Validate system behavior

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📅 Frequency

• Quarterly

• Half-yearly

• Annually

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🔄 Types of CyberArk DR Drill

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1️⃣ Automatic Failover

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📌 What is Automatic Failover?

When Primary Vault goes down,
👉 DR Vault automatically becomes Primary

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⚙️ Key Configuration

File: PADR.ini
Log: PADR.log

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🧭 Steps for Automatic Failover

1. Login to DR Vault

2. Check PADR.log (No replication errors)

3. Verify parameter:

EnableFailover=Yes

4. Login to Primary Vault

5. Stop PrivateArk Server Service

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🔄 What Happens Next?

• DR tries to connect to Primary

• Attempts = 5 (default)

• Interval = 30 seconds

👉 Total wait time = ~150 seconds

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✅ Result:

✔ DR becomes Active Vault
✔ DR Service stops
✔ PrivateArk Server starts

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2️⃣ Manual Failover

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📌 What is Manual Failover?

👉 You force DR to become Primary, even when Primary is up

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🎯 When to Use?

✔ Testing CyberArk upgrades
✔ OS patch validation
✔ DR health validation

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🧭 Steps for Manual Failover

1. Login to DR Vault

2. Check PADR.log (No errors)

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3. Update PADR.ini:

EnableFailover=No
ActivateManualFailover=Yes

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4. Restart DR Service

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✅ Result:

✔ DR becomes Active immediately

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⚠️ Important Note

👉 At this stage:

• Primary = Active

• DR = Also Active

👉 Traffic still goes to Primary

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⚠️ Data Loss Scenario (Very Important)

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❗ Why Data Loss Happens?

• DR becomes active temporarily

• No replication from Primary

• New data generated on both sides

👉 When replication resumes:
❌ DR test data gets overwritten

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🔁 CyberArk Failback Process

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📌 What is Failback?

👉 Returning to original state:

• Primary → Primary

• DR → Standby

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🔄 Scenario

After failover:

• DR = Active

• Primary = Outdated

👉 Need to sync data back

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🧭 Failback Steps

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Step 1: On Primary (Acting as DR)

1. Start DR Service

2. Check PADR.log

3. Ensure replication completes

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Step 2: Update PADR.ini

EnableFailover=No
FailoverMode=Yes

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Step 3:

• Stop DR Service

• Start PrivateArk Server

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Step 4: On DR Vault

Update PADR.ini:

FailoverMode=No

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Step 5:

• Stop PrivateArk Server

• Start DR Service

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✅ Final State:

✔ Primary = Active
✔ DR = Standby
✔ Replication restored

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⚠️ Common Issues & Troubleshooting

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🔴 Replication Errors

👉 Check:

• PADR.log

• Restart DR Service

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🔴 Failover Not Triggered

👉 Check:

• EnableFailover=Yes

• Network connectivity

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🔴 Services Not Switching

👉 Check:

• PrivateArk Server

• DR Service status

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🔴 Data Mismatch

👉 Cause:

• Improper failback

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🧠 Best Practices

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✔ Always check PADR.log before failover
✔ Perform DR Drill regularly
✔ Avoid testing in production peak hours
✔ Document every step
✔ Validate services after failover

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📊 Automatic vs Manual Failover

Feature	Automatic	Manual
Trigger	System	Admin
Speed	Medium	Instant
Use Case	Real failure	Testing
Risk	Low	Medium

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🧠 Key Takeaways

✔ DR Drill ensures high availability
✔ Automatic failover is default
✔ Manual failover is for testing
✔ Failback restores original setup
✔ Proper execution avoids data loss

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🎯 Final Thoughts

CyberArk DR Drill is not just a test —
👉 It is your insurance against downtime

💡 If DR fails, your entire CyberArk environment is at risk...