AWS - Storage

Question 1

What is AWS S3?

Answer 1

AWS S3 stands for Amazon Simple Storage Service

• Object storage service for the cloud that is highly available
• Objects (Files) are stored in buckets (Directory)
• Objects can be Public or Private
• You can set security at the bucket level or individual object leverl using access control lists (ACLs), Bucket policies or access point policies.
• You can enable versioning to create multiple versions of your file in order to proctect against accidental deletion and to use a previous version.
• AWS S3 is a regional service, but bucket names are globally unique

Question 2

What is AWS S3 durability standard?

Answer 2

• Durability is important so your objects are never lost or compromised.
• Amazon S3 Standard is designed for 99.999999999%(11 9’s) of durability.

Question 3

What is AWS S3 availability standard?

Answer 3

• Availability is important so you can access your data quickly when you need it.
• Amazon S3 Standard is designed for 99.99% of availability.

Question 4

What ar ethe 7 AWS S3 Storage Classes?

Answer 4

• S3 Standard
• S3 intelligent-Tiering
• S3 Standard Infrequent Access (IA)
• S3 One Zone-Infrequent Access(IA)
• S3 Glacier
• S3 Glacier Deep Archive
• S3 Outpots

Question 5

Characteristics of AWS S3 Standard class?

Answer 5

• S3 Standard
  
  • General Purpose storage
  • Data stored across multiple availability zones
  • Low latency and high throughput
  • Recommended for frequenctly accessed files

Question 6

Characteristics of AWS S3 Intelligent-Tiering class?

Answer 6

S3 intelligent-Tiering

• Automatically moves data to the most-cost effective storage class
• No retrieval fees
• Automatic cost savings
• Data stored across multiple availability zones
• recommended for data with unknown or changing access patterns.

Question 7

Characteristics of AWS S3 S3 Standard Infrequent Access (IA) class?

Answer 7

Standard Infrequent Access:

• Data accessed infrequently by requires rapid access.
• Cheaper than S3 standard
• Data stored across multiple availability zones
• recommended for:
  
  • Long-lived data
  • Infrequently accessed
  • Millisecond access when needed.

Question 8

Characteristics of AWS S3 One Zone-Infrequent Access(IA) class?

Answer 8

S3 One Zone-Infrequent Access(IA):

• Like S3 Standard-IA but stored in single availability zone.
• Cost 20% less than S3 standard-IA
• Data stored in this storage class can be lost.
• Availability 99.95%
• recommended for:
  
  • Re-creatable data
  • Availability and Durability are not essential
  • Millisecond access when needed.

Question 9

Characteristics of AWS S3 Glacier class?

Answer 9

S3 Glacier:

• Long-term data storage.
• data retrieval takes longer.
• 3 retrieval options:
  
  • 1 - 5 Minutes
  • 3 - 5 Hours
  • 5 - 12 hours
• Data stored accross multiple availability zones.
• recommended for:
  
  • Long-term backup
  • Cheaper storage option

Question 10

Characteristics of AWS S3 Glacier Deep Archive class?

Answer 10

Glacier Deep Archive:

• Like Glacier but longer access times.
• 2 retrieval options:
  
  • 12 hours
  • 48 hours
• Data stored accross multiple availability zones.
• Cheapest of all S3 Options
• recommended for:
  
  • Long-term data archival accessed once or twice a year.
  • Retaining data fro regulatory complience requirements

Question 11

Characteristics of AWS S3 Outposts class?

Answer 11

S3 Outposts:

• provides data storage on premise.
• single storage class
• Data stored accross multiple devices and servers.
• recommended for:
  
  • Data needs to be kept local

Question 12

What is Amazon EBS?

Answer 12

Amazon Elastic Block Storage (EBS) is storage device (called a volume) that can be attached to (or removed from) your instance.

• Data persists when the instance is not running
• Can only be attached to one instance in the same Availability Zone
• Tied to one Availability Zone

Recommended For:

• Quickly accessible data
• Running a database on an instance
• Long-term data storage

Question 13

What is EC2 Instance Store?

Answer 13

An instance store is local storage that is physically attached to the host computer and cannot be removed.

• Storage on disks physically attached to an instance
• Storage is temporary since data loss occurs when the EC2 instance is stopped
• Faster with higher I/O speed

Recommended For:

• Temporary storage needs
• Data replicated across multiple instances

Question 14

What is Amazon Elastic File System (EFS)?

Answer 14

EFS is a serverless network file system for sharing files.

• Only supports the Linux file system
• Accessible across different Availability Zones in the same Region
• More expensive than EBS
• Recommended For:
  
  • Main directories for business-critical apps
  • Lift-and-shift existing enterprise apps

Question 15

What is Amazon Storage Gateway?

Answer 15

Storage Gateway is a hybrid storage service.

• Connect on-premises and cloud data
• Supports a hybrid mode
• Recommended for:
  
  • Moving backups to the cloud
  • Reducing costs for hybrid cloud storage
  • Low latency access to data