Storage - S3

Question 1

Type of storage?

Answer 1

Object storage; you can store virtually any kid of data in any format.

Question 2

Features?

Answer 2

Accessible to anyone or any service with the right permissions

Question 3

Max storage size

Answer 3

virtually unlimited

Question 4

Max file size

Answer 4

max range of 5 Tbps

Question 5

Performance (Latency)

Answer 5

low, for mixed request types, and integration with CloudFront

Question 6

Performance (Throughput)

Answer 6

Multiple GBs per second; supports multi-part uploads

Question 7

Why S3 over EFS and EBS?

Answer 7

Better throughput and durability than EBS same as EFS ; better access than EFS or EBS; multitude of use cases

Question 8

What is a S3 object?

Answer 8

a file and or metadata

Question 9

What is a S3 key?

Answer 9

a unique id for an object within a bucket

Question 10

What is an S3 bucket?

Answer 10

is where objects(data) are stored. Bucket name must be DNS-compliant.

Question 11

Bucket limitations

Answer 11

After you create, cannot change the name or region; can create up to 100 buckets; can’t

Question 12

What is the data consistency model?

Answer 12

Read-after-write consistency for PUTs on new objects, eventual consistency for read-after-write HEAD or GET requests; eventual consistency for overwrite PUTs and DELETEs in all regions; strong read-after-write consistency for any storage request

Question 13

What is S3 Standard?

Answer 13

general purpose storage of frequently accessed data

Question 14

What is S3 Standard IA?

Answer 14

for long lived, less frequently accessed data. Objects are stored redundantly across multiple AZs

Question 15

What is S3 Standard Onezone IA?

Answer 15

less frequently accessed data, but in one AZ meaning data is not resilient.

Question 16

What’s particular about file sizes for infrequently accessed objects?

Answer 16

Objects must be larger than 128KB that you plan to store for at least 30 days. S3 charges you for 128 KB

Question 17

What are the S3 APIs?

Answer 17

REST API uses standard HTTP requests to create, fetch, and delete buckets and objects. SOAP, support for HTTPS. REST API

Question 18

What are particular features of S3 Objects?

Answer 18

Private by default. You cannot modify object metadata after object is upload.

Question 19

What are the types of object metadata?

Answer 19

system metadata and user-defined metadata

Question 20

What is the S3 pricing model?

Answer 20

Charged for what you use. No charges for creating buckets, only storing objects in the bucket and transferring object in and out the bucket.

Question 21

What can be be charged for specifically?

Answer 21

storage; GET requests, retrievals and early deletes of IA and glacier; storage management; bandwidth

Question 22

What are types of network offered?

Answer 22

host-style access with the bucket.s3.amazonaws.com format or path-style access using the endpoint that matches the region the bucket resides, i.e., s3.amazonaws.com/bucket. Bucket names can be same as CNAME

Question 23

What is transfer acceleration?

Answer 23

enables fast, secure, files over long distances between client and S3 bucket, while taking advantage of cloudfront. Cannot be disabled, on suspended. The URL is bucket.s3-accerate.amazonaws.com.