3 Amazon EFS File Storage Free Online FlashCards

What is Amazon EFS designed to provide?

Amazon EFS is a managed, elastic file system that lets multiple supported compute clients share files through familiar directories and file paths.

How does EFS capacity respond to file changes?

EFS capacity grows and shrinks as files are added or removed, so you do not need to pre-provision storage capacity.

How is a Regional EFS file system distributed?

A Regional file system stores data redundantly across multiple Availability Zones in a Region, making it a typical choice when cross-AZ resilience matters.

What does an EFS mount target provide?

A mount target provides network access to an EFS file system from a VPC.

How do applications access EFS files on an EC2 instance?

EFS uses NFS. After mounting it to a local directory on an EC2 instance, applications can read and write files there as they would on a local file system.

What network access is required for an EC2 client to reach an EFS mount target?

The mount target security group must allow inbound NFS traffic on TCP port 2049 from the client security group, and the client must be permitted to send that traffic.

What characterizes EFS General Purpose performance mode?

General Purpose provides the lowest per-operation latency and is recommended for most workloads. It is the default performance mode, and One Zone file systems use it.

How do EFS performance mode and throughput mode differ?

Performance mode affects file-operation latency and parallel-work characteristics; throughput mode controls the throughput capacity available to the file system.

When are Elastic and Provisioned EFS throughput modes suitable?

Elastic throughput can suit workloads with unpredictable or spiky demand; Provisioned throughput can suit workloads with known requirements.

How can EFS support analytics and machine learning?

EFS can support analytics and machine-learning workflows in which multiple compute instances read shared datasets and write results.

When might a One Zone EFS file system be suitable?

A One Zone file system stores data in a single Availability Zone. It may suit workloads that accept greater availability risk for a different cost profile.

Where is it recommended to place a mount target relative to its client?

Using a mount target in the same Availability Zone as the client is recommended for performance and cost reasons.