Quick Answer
The answer is AWS Elastic Disaster Recovery (DRS). This service is correct because it performs continuous, block-level replication of entire servers, including SAP application servers like dialog instances and the central instance, enabling near real-time replication with minimal downtime during migration. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your understanding of disaster recovery versus data transfer services; the key trap is confusing DRS with AWS DataSync, which is designed for one-time bulk transfers rather than ongoing replication. A common memory tip is to think of DRS as “DRS for DR” — it’s the only AWS service that keeps your SAP app servers continuously in sync at the block level, unlike scheduled backups or object replication.
This PAS-C01 practice question tests your understanding of migration. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is migrating an SAP ERP system to AWS. The SAP system uses a central instance (CI) and dialog instances. The migration must minimize downtime. Which AWS service should be used to replicate the application servers in near real-time?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Amazon S3 Replication
Why wrong: S3 Replication is for objects, not EC2 instances.
AWS DataSync
Why wrong: DataSync is for one-time or scheduled transfers, not continuous replication.
AWS Elastic Disaster Recovery (AWS DRS)
AWS DRS provides continuous block-level replication for low RPO.
AWS Backup
Why wrong: AWS Backup is for backup and restore, not real-time replication.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
AWS Elastic Disaster Recovery (AWS DRS)
Option C is correct. AWS Elastic Disaster Recovery (DRS) provides continuous replication of block-level data, enabling near real-time replication of application servers. Option A (AWS Backup) is for scheduled backups, not real-time replication. Option B (AWS DataSync) is for one-time data transfers. Option D (Amazon S3 replication) is for S3 objects.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon S3 Replication
Why it's wrong here
S3 Replication is for objects, not EC2 instances.
AWS DataSync
Why it's wrong here
DataSync is for one-time or scheduled transfers, not continuous replication.
AWS Elastic Disaster Recovery (AWS DRS)
Why this is correct
AWS DRS provides continuous block-level replication for low RPO.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
AWS Backup
Why it's wrong here
AWS Backup is for backup and restore, not real-time replication.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Migration — study guide chapter
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FAQ
Migration — This question tests Migration — Read the scenario before looking for a memorised answer..
The correct answer is: AWS Elastic Disaster Recovery (AWS DRS) — Option C is correct. AWS Elastic Disaster Recovery (DRS) provides continuous replication of block-level data, enabling near real-time replication of application servers. Option A (AWS Backup) is for scheduled backups, not real-time replication. Option B (AWS DataSync) is for one-time data transfers. Option D (Amazon S3 replication) is for S3 objects.
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 2026
This PAS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PAS-C01 exam.
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