Exam AWS Certified SAP on AWS - Specialty PAS-C01 topic 1 question 45 discussion

D https://aws.amazon.com/ebs/cold-hdd/

https://docs.aws.amazon.com/sap/latest/sap-netweaver/backup-and-recovery.html

Answer is A. D is not suitable because sc1 provides low throughput and high latency. The backup action could impact production

SQL native tools to take backup on disk: Backup requires high throughput compared to IOPS. We recommend using Throughput Optimized HDD (st1) which provides maximum throughput of 500 MB/s per volume. Once the backup completes on disk, you can use scripts to move it to an Amazon S3 bucket

Answer is A SQL native tools to take backup on disk: Backup requires high throughput compared to IOPS. We recommend using Throughput Optimized HDD (st1) which provides maximum throughput of 500 MB/s per volume. Once the backup completes on disk, you can use scripts to move it to an Amazon S3 bucket.

A and D are possible but where does the requirement say to have high throughput ?! So more likely D that is more cost effective.

A: For workloads involving frequent, large, and sequential I/O operations, such as log processing and big data workloads, the st1 volume type is an economical and high-performance choice. Since database backups involve sequential write operations, Throughput Optimized HDD (st1) volumes, which are designed for large, sequential I/O workloads, will meet these requirements most cost-effectively.

When unsure go for gp3 https://aws.amazon.com/blogs/storage/maximizing-microsoft-sql-server-performance-with-amazon-ebs/

a-a-a-a-a-a-a-a

https://docs.aws.amazon.com/sap/latest/sap-hana/cold-data-tiering-options.html#sap-archiving For archiving, another option is to use the Amazon Elastic Block Store (Amazon EBS) sc1 volume type as the underlying storage type for your archive file system. Amazon EBS sc1 volumes are inexpensive block storage and are designed for less frequently accessed workloads like data archiving. To increase durability and availability of your archived data, we recommend that you copy the data to Amazon S3 for backup and Amazon S3 Glacier for long term retention. SC1 IS CHEAPEST

"For SQL Server database backup, you can use one of the following methods: SQL native tools to take backup on disk: Backup requires high throughput compared to IOPS. We recommend using Throughput Optimized HDD (st1) which provides maximum throughput of 500 MB/s per volume."

(st1) volumes for SAP HANA to perform file-based backup. This volume type provides low-cost magnetic storage designed for large sequential workloads.

The question could be more clear mentioning throughput requirements but as other have mentioned, a couple of places mentions st1 as recommended HDD volume for backups as it gives high througput and for SAP backups high throughput is required.

A is correct.

I am voting for D. This is not a Hana scenario though, but I don't see a reason to use throughput optimized data for backups in this scenario. Cold is cheaper.

I'm torn between A and D. There is also a description that st1 is an option when backing up to EBS as a local backup. https://docs.aws.amazon.com/wellarchitected/latest/sap-lens/best-practice-14-2.html

D maybe https://docs.aws.amazon.com/sap/latest/sap-hana/cold-data-tiering-options.html#sap-archiving