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Difficulty: HardAWS Storage Services

A financial services firm is deploying a high-performance database application on Amazon EC2 instances. The database requires a persistent block storage volume that supports consistent sub-millisecond latency for transactional writes, where data must remain intact even if the instances are stopped. Additionally, the firm needs to create point-in-time backups of this storage that are stored durably across multiple Availability Zones and can be restored as new volumes.

Which two AWS storage options or features should the company select to meet these requirements? (Select TWO.)

  1. Amazon EBS Provisioned IOPS SSD (io2) volumesAnswer
  2. Amazon EBS SnapshotsAnswer
  3. C
    Amazon EC2 Instance Store
  4. D
    Amazon Elastic File System (Amazon EFS)
  5. E
    Amazon S3 Standard-Infrequent Access (Amazon S3 Standard-IA)

Answer

Amazon EBS Provisioned IOPS SSD (io2) volumes and Amazon EBS Snapshots
The correct options are the ones recommending Amazon EBS Provisioned IOPS SSD (io2) volumes and Amazon EBS Snapshots. Amazon EBS Provisioned IOPS SSD (io2) volumes provide the required high-performance, persistent block storage with sub-millisecond latency that persists even when the instances are stopped. Amazon EBS Snapshots provide the point-in-time, incremental backups of these volumes that are stored durably across multiple Availability Zones in S3 and can be restored as new EBS volumes.

Step-by-Step Solution

1
Identify the primary storage requirement: block-level storage, persistent across instance stops, and sub-millisecond latency for transactional writes.
Amazon EBS Provisioned IOPS SSD (io2) volumes satisfy this, while Amazon EC2 Instance Store is ephemeral and Amazon EFS is file-level storage.
Databases require high-performance, persistent block storage.
2
Identify the backup requirement: point-in-time, highly durable across multiple Availability Zones, and restorable to new volumes.
Amazon EBS Snapshots satisfy this requirement by saving volume data incrementally to S3 (which spans multiple Availability Zones).
Snapshots protect against data loss and allow restoration of volumes in any Availability Zone.

Key Concept

Selecting appropriate persistent block storage and backup solutions on AWS
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Topics

AWS Storage Services

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