PAS-C01 Operations and Maintenance Practice Question
A company runs SAP on AWS using a multi-AZ deployment. The database is an SAP HANA system replicated across two Availability Zones. During a recent failure, the standby HANA instance did not take over automatically. The operations team finds that the HANA replication status was 'ERROR' before the failure. What is the most likely reason for the failed takeover?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The HANA system replication was not in sync; data was not fully replicated to the standby.
If the HANA system replication status is 'ERROR', automatic takeover cannot occur. The replication link must be healthy for the standby to have the latest data. Option A is wrong because a difference in instance numbers does not cause a replication status error; replication setup would fail if instance numbers mismatched. Option B is wrong because a misconfigured fencing mechanism would not cause a replication status error; it would prevent takeover only if fencing fails. Option D is wrong because high network latency could cause replication lag but not an error status; the status error indicates a more fundamental issue.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The standby HANA instance had a different instance number than the primary.
Why it's wrong here
A difference in instance numbers does not cause a replication status error; replication setup would fail if instance numbers mismatched.
- ✗
The fencing mechanism was not configured correctly in the cluster.
Why it's wrong here
Fencing is for cluster management, not direct cause of replication error.
- ✓
The HANA system replication was not in sync; data was not fully replicated to the standby.
Why this is correct
An error status means replication is broken; the standby cannot take over safely.
- ✗
The network latency between the two Availability Zones was too high.
Why it's wrong here
High network latency could cause replication lag but not an error status; the status error indicates a more fundamental issue.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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