Storage

Question 1

S3 features

Answer 1

Scalability - Store up to Exabyte of data, no provisioning
Durability and Availability - 11 9s data durability, 99.99% availability SLA
Security and data protection - Encrypted at rest by default
Lowest price highest performance - multi-storage classes for different needs

Question 2

S3 Intelligent Tiering

Answer 2

For a small extra monitoring charge, monitor access pattern
Data moved down from Frequent Access -> Infrequent Access -> Archive Instant Access -> Archive Access(Optional) -> Deep Archive Access(Optional)
If data is used -> it moves back up to Frequent Access

Question 3

Glacier storage classes

Answer 3

For long-term data, with up to millisecond access
Glacier Instant Retrieval - low cost, millisecond access
Glacier Flexible Retrieval (Expedited) - 1-5mins
Glacier Flexible Retrieval (Standard) - 1 - 5hrs
Glacier Flexible Retrieval (Deep Archive) 12 - 48hrs
flat rate storage cost

Question 4

Express One Zone

Answer 4

Single digit millisecond access
but 1 AZ only => higher risk

Question 5

Standard - IA

Answer 5

Standard Infrequently access
lower storage cost, higher access cost than standard

Question 6

What is the difference between EFS and FSx

Answer 6

EFS is Linux native file-system based on NFS
FSx is Windows native file-system

Question 7

S3 Lifecycle actions

Answer 7

Transition actions - transition to a different class

Expiration actions - Data deletion