AWS EFS

Question 1

What does EFS stand for?

Answer 1

Elastic File System

Question 2

What is EFS?

Answer 2

Amazon Elastic File System is:

1. Managed NFS (network file system) that can be mounted on many EC2 instances.
2. EFS works with EC2 instances in multiple Availability Zones.
3. Highly available and scalable. However, it is expense.

Question 3

Can you share EFS storage across multiple EC2 instances?

Answer 3

Yes.

Question 4

What are the use cases for EFS?

Answer 4

Content Management & Web Servers

Question 5

What are the primary highlights about EFS?

Answer 5

1. Uses NFSv4 protocol
2. Compatible with Linux-based AMI (Windows not supported at this time)
3. Encryption at rest using KMS.
4. File system scales automatically; no capacity planning required.
5. Pay per use

Question 6

What are the highlights on EFS Performance?

Answer 6

1. EFS has amazing performance capabilities.
2. EFS can support thousands of concurrent connections (EC2 instances).
3. EFS can handle up to 10 Gbps in throughput.
4. EFS allows you to scale your storage to petabytes.

Question 7

When creating an EFS file system, you can set what performance characteristics you want. What is EFS file systems 2 primary use cases?

Answer 7

1. General Purpose: Used for things like web servers, CMS, etc.
2. Max I/O: Used for big data, media processing, etc.

Question 8

With EFS, what features allow you to move your data from one tier to another after X number of days?

Answer 8

1. Storage Tiers
2. Lifecycle Management

EFS comes with storage tiers and lifecycle management, allowing you to move your data from one tier to another after X number of days

Question 9

What are the two EFS Storage Tier options?

Answer 9

1. Standard - for frequently accessed files

2. Infrequently Accessed

Question 10

When creating an EFS file system, what are your two options under Availability & Durability?

Answer 10

1. Regional - stores data redundantly across multiple AZs.

2. One Zone - stores data redundantly within a single AZ.

Question 11

What are the two Throughput Modes when creating an EFS file system?

Answer 11

1. Bursting - Throughput scales with file system size

2. Provisioned - Throughput fixed at specific amount.

Question 12

What do you use for highly scalable shared storing using NFS?

Answer 12

EFS is used for highly scalable shared storage using NFS.

Question 13

EFS can scale up to __________.

Answer 13

EFS can scale up to petabytes.