Storage Services Flashcards

Which S3 storage class stores data in only one Availability Zone, providing lower cost but reduced durability?

Answer: S3 One Zone-IA

S3 One Zone-IA stores data in a single AZ at 20% lower cost than Standard-IA, but data is lost if the AZ is destroyed.

A company needs to maintain copies of S3 objects in a different AWS Region for disaster recovery. Which feature supports this?

Answer: S3 Cross-Region Replication

S3 Cross-Region Replication (CRR) automatically copies objects from a source bucket to a destination bucket in a different AWS Region.

Which AWS service allows on-premises backup software to store data in AWS using an iSCSI block storage interface?

Answer: Volume Gateway

Volume Gateway presents iSCSI block storage volumes to on-premises applications, backed by Amazon S3 with optional EBS snapshots.

What durability does Amazon S3 Standard guarantee for stored objects?

Answer: 99.999999999% (eleven nines)

Amazon S3 is designed for 99.999999999% (11 nines) durability by redundantly storing data across multiple AZs within a Region.

Which EBS volume type is best suited for a big data analytics workload requiring high sequential throughput rather than high IOPS?

Answer: st1 (Throughput Optimized HDD)

st1 (Throughput Optimized HDD) is designed for large, sequential workloads like big data, data warehouses, and log processing at low cost.

A company is migrating 80 TB of archival data to AWS and needs the transfer completed within 10 days. Which service is most practical?

Answer: AWS Snowball Edge

AWS Snowball Edge is a physical device that can transfer 80 TB offline within days, making it far faster than any internet-based option for this scale.

Which Amazon FSx option provides a high-performance file system optimized for compute-intensive workloads like machine learning and HPC?

Answer: FSx for Lustre

Amazon FSx for Lustre is a high-performance parallel file system built for compute-intensive workloads including HPC, ML, and media processing.