What should a solutions architect do to meet these requirements?
Create an Amazon S3 bucket. Allow access from all the EC2 instances in the VPC.
Create an Amazon Elastic File System (Amazon EFS) file system. Mount the EFS file system from each EC2 instance.
Create a file system on a Provisioned IOPS SSD (io2) Amazon Elastic Block Store (Amazon EBS) volume. Attach the EBS volume to all the EC2 instances.
Create file systems on Amazon Elastic Block Store (Amazon EBS) volumes that are attached to each EC2 instance. Synchronize the EBS volumes across the different EC2 instances.
Explanations:
Amazon S3 is an object storage service that is not suited for applications requiring rapid and concurrent read/write access to a hierarchical directory structure. S3 has higher latency compared to file systems and does not support native file system semantics.
Amazon EFS is a fully managed file storage service that provides a scalable, elastic file system that can be mounted concurrently by multiple EC2 instances. It is ideal for applications requiring low-latency access to shared storage and supports NFS protocol, making it suitable for hierarchical directory structures.
An EBS volume can only be attached to a single EC2 instance at a time (unless using Multi-Attach feature for specific volume types). This option does not support concurrent access across multiple instances, which is necessary for the described use case.
Similar to option C, EBS volumes can only be attached to one instance at a time (except when using Multi-Attach). Synchronizing EBS volumes across instances would introduce complexity and potential latency issues, making this option unsuitable for applications needing rapid concurrent access.
I reckon the answer is:
Create an Amazon Elastic File System (Amazon EFS) file system. Mount the EFS file system from each EC2 instance.