PAS-C01 Design of SAP Workloads on AWS Practice Test 19 — 15 Questions

Question 1

A company is planning to deploy an SAP HANA scale-out system on AWS with multiple EC2 instances. The company wants to ensure that the shared file systems used by the HANA nodes are highly available and performant. Which TWO design choices should be implemented? (Choose two.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Deploy a highly available NFS file system for /hana/shared on EC2 instances across multiple Availability Zones, or use a supported managed file service.. For an SAP HANA scale-out system, the /hana/data and /hana/log file systems should be placed on high-performance block storage such as Amazon EBS io2 Block Express volumes on each node. The /hana/shared file system must be highly available and accessible from all nodes, which can be achieved with a supported managed file service or a self-managed highly available NFS cluster across Availability Zones.

Answer

Use a single Amazon EBS io2 volume attached to all HANA nodes in the scale-out system for the /hana/shared file system.

Answer

Place the /hana/shared file system on an Amazon EFS file system with mount targets in multiple Availability Zones.

Answer

Use Amazon FSx for NetApp ONTAP for the /hana/shared and /hana/data file systems, with a Multi-AZ deployment.

Question 2

A company is designing a high availability architecture for an SAP S/4HANA system on AWS. The system uses a HANA database with system replication and an ASCS instance with an enqueue replication server. The company wants to ensure that the SAP application servers can automatically reconnect to the new primary database and ASCS in the event of a failover. Which TWO configurations are required to achieve this? (Choose two.)

Accepted Answer

Implement a virtual IP (VIP) using AWS Elastic IP or a secondary private IP that can be moved between instances during failover.. To enable automatic reconnection of SAP application servers after failover, a virtual IP (VIP) or a DNS update mechanism is required. The VIP can be moved between instances, while a DNS CNAME update redirects clients to the new primary. Both approaches provide a consistent endpoint for application servers.

Answer

Use an overlay IP address with AWS Transit Gateway to redirect SAP application servers to the new primary database and ASCS.

Answer

Enable SAP HANA system replication in synchronous mode with log shipping to ensure zero data loss.

Answer

Configure SAP HANA system replication in multi-tier mode with a secondary site in a different Availability Zone.

Question 3

A company is designing a disaster recovery strategy for its SAP S/4HANA system on AWS. The primary site runs in the us-east-1 Region. The company requires a recovery point objective (RPO) of 15 minutes and a recovery time objective (RTO) of 2 hours. The disaster recovery site will be in us-west-2. Which approach meets these requirements most cost-effectively?

Accepted Answer

Configure SAP HANA system replication to a standby system in us-west-2 with asynchronous replication. SAP HANA system replication is the native and supported method for replicating SAP HANA databases across AWS Regions. Asynchronous replication can achieve an RPO of 15 minutes or less, and a standby system in us-west-2 can be activated within the 2-hour RTO. This approach is cost-effective because the standby system can be sized smaller or stopped when not needed, and it avoids the limitations of snapshot-based recovery or unsupported tools like AWS DMS. Therefore, configuring SAP HANA system replication with asynchronous mode is the correct solution.

Answer

Take hourly Amazon EBS snapshots of the SAP HANA data volumes and copy them to us-west-2

Answer

Use AWS Storage Gateway to replicate on-premises data to us-west-2

Answer

Use AWS Database Migration Service (AWS DMS) to continuously replicate the SAP HANA database to us-west-2

Question 4

A company runs an SAP NetWeaver Java system on AWS. The system uses an Oracle database on an EC2 instance with EBS volumes. The company needs to implement a disaster recovery (DR) strategy that provides a recovery point objective (RPO) of 15 minutes and a recovery time objective (RTO) of 2 hours. The DR site must be in a different AWS Region. The company wants to minimize costs while meeting these objectives. Which solution should be implemented?

Accepted Answer

Configure Oracle Data Guard to replicate the database to an EC2 instance in the DR Region, and use Amazon Machine Images (AMIs) to recreate the application servers.. Oracle Data Guard with asynchronous replication provides an efficient way to meet the 15-minute RPO by shipping redo logs to a standby database in the DR Region. Using AMIs for application servers avoids running standby compute instances, reducing costs. This hybrid approach balances the RPO and RTO requirements with cost minimization. The other options either exceed the RPO unnecessarily, are more expensive, or cannot meet the RTO.

Answer

Use Amazon S3 Cross-Region Replication to copy EBS snapshots to the DR Region, and restore from snapshots during a disaster.

Answer

Use AWS Elastic Disaster Recovery to replicate the EC2 instances to the DR Region.

Answer

Deploy a fully functional standby SAP system in the DR Region with a synchronous Oracle Data Guard configuration.

Question 5

An SAP HANA database on AWS is configured with multiple EBS volumes for data and log. The company wants to ensure that the storage layout provides the best performance for an OLTP workload with high write-intensive operations. Which storage configuration should be implemented for the HANA log volume?

Accepted Answer

Stripe multiple io2 Block Express volumes using RAID 0 to aggregate IOPS and throughput, and format with XFS.. For write-intensive OLTP workloads, the HANA log volume should be configured with multiple io2 Block Express volumes striped with RAID 0 to maximize IOPS and throughput. This provides the necessary performance and scalability. XFS is the recommended file system. Other options either do not provide sufficient performance or lack durability.

Answer

Use a single gp3 volume with provisioned IOPS and throughput, and enable EBS Multi-Attach to allow multiple instances to write to the log volume simultaneously.

Answer

Use an instance store volume for the log volume to achieve the lowest latency, and replicate it to EBS for durability.

Answer

Use a single io2 Block Express volume with the highest available IOPS and attach it to the instance.

Question 6

A company runs SAP NetWeaver on AWS and needs to ensure high availability for the SAP Central Services (SCS) instance. The company wants to use a shared file system for the SAP global transport directory and ensure that the SCS instance can fail over automatically to a secondary Availability Zone. Which solution should be implemented?

Accepted Answer

Use Amazon FSx for Windows File Server for the shared file system and configure a Windows Server Failover Cluster (WSFC) with a file share witness in a third Availability Zone.. For SAP NetWeaver on Windows, high availability for SCS requires a Windows Server Failover Cluster. FSx for Windows File Server provides the shared file system for SAP global transport, and a file share witness in a third AZ ensures quorum. This configuration allows automatic failover across two Availability Zones, meeting the high availability requirement.

Answer

Use Amazon FSx for Windows File Server for the shared file system and configure a Windows Server Failover Cluster (WSFC) across two Availability Zones.

Answer

Use Amazon EFS for the shared file system and configure a Windows Server Failover Cluster (WSFC) across two Availability Zones.

Answer

Use Amazon FSx for NetApp ONTAP for the shared file system and configure a Pacemaker cluster across two Availability Zones.

Question 7

A company is designing a new SAP S/4HANA production system on AWS. The SAP HANA database will run on an EC2 instance with multiple EBS volumes. The company requires the highest possible IOPS and lowest latency for the HANA data and log volumes. The storage must also support consistent performance independent of the instance's EBS-optimized bandwidth. Which storage option should be used for the HANA data and log volumes?

Accepted Answer

Amazon EBS io2 Block Express volumes with provisioned IOPS. For SAP HANA on AWS, the storage layer must deliver high IOPS and consistent low latency. Amazon EBS io2 Block Express volumes are specifically designed for such demanding workloads and are recommended by AWS for HANA data and log volumes. They provide provisioned IOPS that can exceed the capabilities of general-purpose or throughput-optimized volumes, ensuring that performance is not bottlenecked by the instance's EBS bandwidth. Other volume types like gp3, st1, or sc1 do not meet the stringent requirements of production HANA systems.

Answer

Amazon EBS sc1 volumes with 250 MiB/s throughput

Answer

Amazon EBS gp3 volumes with 16,000 IOPS and 1,000 MiB/s throughput

Answer

Amazon EBS st1 volumes with 1,000 MiB/s throughput

Question 8

A company runs SAP S/4HANA on a single AWS Availability Zone using an r6i.8xlarge EC2 instance with SAP HANA. The business requires an RTO of 15 minutes and an RPO of 5 minutes for the HANA database, and the recovery site must reside in a second Availability Zone within the same Region. Which design meets these requirements MOST cost-effectively?

Accepted Answer

Deploy a HANA system replication secondary in the second Availability Zone in delta data shipping mode with operation mode logreplay and preload off, and configure an AWS Network Load Balancer endpoint for client redirection.. A cost-effective cross-AZ high-availability design for SAP HANA uses system replication with logreplay and delta data shipping, which keeps the secondary continuously updated with a low RPO while avoiding the memory cost of preloading the full column store. An AWS Network Load Balancer provides a stable virtual IP that SAP application servers can use for failover. Snapshot, backup-restore, and cross-Region approaches cannot meet the stated RTO and RPO.

Answer

Configure HANA system replication in synchronous mode with full data shipping to a secondary instance in the second Availability Zone, and enable preload on the secondary to guarantee the fastest possible takeover.

Answer

Take AWS Backup snapshots of the HANA data and log EBS volumes every 5 minutes and restore them into a new EC2 instance in the second Availability Zone during a failover event.

Answer

Use Amazon S3 Cross-Region Replication of HANA backup files and rebuild the database in the second Availability Zone from the most recent backup when a failure occurs.

Question 9

A company is designing a high-availability architecture for SAP HANA on AWS using SUSE Linux Enterprise High Availability Extension. The primary and secondary HANA instances run in separate Availability Zones within the same VPC. The team must ensure that the cluster can perform an automatic takeover and that the SAP application servers reconnect to the new primary without manual intervention. Which TWO design elements are required to meet these goals? (Choose two.)

Accepted Answer

SAP HANA system replication configured in logreplay mode with the secondary instance running in the same VPC.. Automatic takeover for SAP HANA on AWS is achieved with a Pacemaker cluster running the SAPHana and SAPHanaTopology resource agents, combined with SAP HANA system replication in logreplay mode. The virtual IP address that moves with the primary role lets the SAP application servers reconnect to the same address without manual reconfiguration. Without system replication there is no up-to-date secondary to take over, and without the resource agents and virtual IP the cluster cannot automate the role transition or redirect application traffic.

Answer

An Application Load Balancer in front of the two HANA instances with health checks on the SQL port.

Answer

An Auto Scaling group that terminates the failed primary instance and launches a replacement in the same Availability Zone.

Answer

A read replica of the HANA database created using Amazon RDS for SAP HANA.

Question 10

A company is deploying SAP S/4HANA on AWS using a scale-out architecture with multiple application servers and a single HANA database. They want to ensure that the SAP application servers can communicate with the HANA database with the lowest possible latency and highest throughput. The application servers are in private subnets across three Availability Zones, and the HANA database is in a private subnet in one Availability Zone. Which networking configuration should be implemented to meet these requirements?

Accepted Answer

Place the HANA database and application servers in the same VPC, use cluster placement group for the database and application servers that communicate frequently, and enable ENA.. The correct answer is to use a cluster placement group for the HANA database and the application servers that communicate with it, combined with ENA. Cluster placement groups provide low-latency, high-throughput networking by placing instances in close proximity within a single Availability Zone. Since the database resides in one AZ, application servers that require minimal latency should also be in that AZ within the cluster placement group. ENA is essential for high performance networking on supported instance types.

Answer

Place all instances in a single VPC and enable VPC peering between the application servers and the database.

Answer

Use AWS Transit Gateway to route traffic between the application servers and the database.

Answer

Place the HANA database and application servers in the same subnet and enable enhanced networking with Elastic Network Adapter (ENA).

Question 11

A company is planning to deploy SAP S/4HANA on AWS using a scale-out architecture for the SAP HANA database. They need to ensure that the EC2 instances used for the HANA database meet SAP's certification requirements. Which EC2 instance family should they choose?

Accepted Answer

X2 instances with EBS gp3 volumes. For SAP HANA scale-out on AWS, the EC2 instance family must be certified by SAP. X2 instances are memory-optimized and certified for scale-out, providing the required memory and bandwidth. EBS gp3 volumes are suitable for HANA data and log storage when provisioned with adequate IOPS and throughput. This combination ensures compliance and performance.

Answer

T3 instances with EBS st1 volumes

Answer

R5 instances with EBS io2 Block Express volumes

Answer

M5 instances with EBS gp3 volumes

Question 12

A company is running SAP NetWeaver on AWS and needs to ensure high availability for the SAP central services (ASCS/SCS) instance. The company wants to use a cluster solution that is supported by SAP and AWS. Which approach should be used?

Accepted Answer

Use a Linux cluster with Pacemaker and a virtual IP address, and configure an overlay IP that can be moved between nodes in different Availability Zones.. For SAP NetWeaver on Linux, Pacemaker is the SAP-supported cluster solution. Using an overlay IP address that can be moved between nodes in different Availability Zones ensures automatic failover and minimal client disruption. This approach is validated by AWS and SAP for high availability of the ASCS instance. Other options either lack automatic failover, use unsupported configurations, or are incomplete.

Answer

Use a Windows Server Failover Cluster (WSFC) with a shared Amazon FSx for Windows File Server file system for the ASCS instance.

Answer

Deploy the ASCS instance on an Auto Scaling group with a minimum and maximum size of 1, and use a Network Load Balancer to distribute traffic.

Answer

Deploy the ASCS instance on a single EC2 instance and use AWS Elastic Disaster Recovery to replicate it to another Availability Zone.

Question 13

A company is migrating its SAP ERP Central Component (ECC) system to AWS. The system uses an Oracle database and runs on a single EC2 instance with EBS volumes. The company wants to minimize downtime during the migration and ensure that the database is consistent. Which migration approach should be used?

Accepted Answer

Use Oracle Data Guard to replicate the database to an EC2 instance on AWS and perform a switchover.. Oracle Data Guard is the recommended approach for migrating SAP ECC on Oracle to AWS with minimal downtime. It maintains a synchronized standby database on AWS, allowing a quick switchover. This ensures database consistency and reduces cutover time compared to export/import or backup/restore methods.

Answer

Use AWS Application Migration Service (MGN) to replicate the entire EC2 instance to AWS.

Answer

Use SAP Software Provisioning Manager (SWPM) to export the database and import it on AWS.

Answer

Use AWS Database Migration Service (DMS) to replicate the Oracle database to an Amazon RDS for Oracle instance.

Question 14

A company is deploying SAP NetWeaver on AWS and needs to ensure the application servers can scale horizontally to handle varying loads. The company wants to use Amazon EC2 Auto Scaling. Which TWO configurations are required to support this? (Choose two.)

Accepted Answer

Create a launch template that includes the SAP application server installation and configuration.. To horizontally scale SAP NetWeaver application servers with EC2 Auto Scaling, a launch template is needed to define the instance configuration, including the pre-installed SAP software. An Application Load Balancer is also required to distribute traffic and perform health checks. These two components enable automatic addition and removal of application servers based on demand.

Answer

Configure the SAP message server to use a multicast address for internal communication.

Answer

Enable detailed monitoring on the EC2 instances to trigger scaling policies.

Answer

Store the SAP application server binaries and instance profiles on a shared Amazon EFS file system.

Question 15

A company is migrating an SAP Business Warehouse (BW) system to AWS. The BW system uses an SAP HANA database that currently runs on an on-premises server with 1 TB of memory. The company wants to select an Amazon EC2 instance type that is certified for SAP HANA and can accommodate the memory requirement with room for growth. Which EC2 instance family should be used?

Accepted Answer

X1e instances with up to 3,904 GiB of memory. For large SAP HANA databases, AWS offers the X1e instance family, which is certified by SAP and provides up to 3,904 GiB of memory. This meets the 1 TB requirement with room for growth. R5 instances, while memory-optimized, max out at 768 GiB, which is insufficient. M5 and T3 instances are not certified for production HANA and have insufficient memory. Thus, X1e is the correct choice.

Answer

R5 instances with 768 GiB of memory

Answer

T3 instances with 32 GiB of memory

Answer

M5 instances with 384 GiB of memory