AWS Flashcards
What is an Availability Zone?
An availability Zone is comprised of one or more data centers in a discreet geographical area that are fairly close together.
What is a region?
A region is comprised of 2 or more availability zones.
IAM - Users
End Users such as people, employees of an organization, etc.
IAM - Groups
A collection of users. Each user in a=the group will inherit the permissions of the group.
IAM - Policies
Polices are mode =up of documents, called Policy documents. These documents are in a format called JSON and they giver persisions as to what a User/Group/Role is able to do.
IAM - Roles
You create roles and then assign them to AWS. Resources. Could be used for 1 AWS service to use another AWS service.
IAM - Access Key ID
This is just like a username for programmatic access.
IAM - Secret Access Key
The actual password used to programmatically
IAM Scope
IAM is universal and transcends all zones.
New Users Permissions
New Users are created with no permissions
S3 Basic File Max Size
Files can be from 0 Bytes to 5TB
S3 Maximum Storage
Storage in S3 is unlimited
Is S3 Object-based or Block Based
S3 is Object-based storage.
S3 NameSpace
S3 is universal name space and must be unique globally. https://s3-[Region].amazonaws.com[unique_name]
S3 Return Code
HTTP 200 code is return if upload was successful
S3 is object-based which means
- Key - This is simply the name of the object
- Value - This is simply the data and is made up of a sequence of bytes
- Version ID (Important for Version control)
- Metadata - information about the data you are storing
- Subresources - ACLs and Torrent.
What is S3s data consistency model?
Read after Write consistency for PUTS of new Objects;
Eventual Consistency for overwrite PUTS and DELETES (can take some time to propogate)
This all means that new files are able to be read immediately; while existing files that or overwriten, deleted or updated may result in the older file being obtained for a short period of time.
S3 - What is the Durability of S3 Storage
11 * 9s.
S3 has what features.
- Tiered Storage availability
- Lifecyclte Management
- Verisioning
- Encryption
- MFA Delete
- Secure your data with ACLs and Bucket Polices
S3 Storage Classes - Standard Details
99.99% availability 11x9s durability, storred redundantly acrossed mu ltiple
What are the S3 Storage Classes
- S3 Standard
- S3 - IA (Infrequeunctlyh accessed) Lower fee that S3 but you are charged a retrieval fee.
- S3 One Zone -= IA - where you want a lower cost option for infrequently accessed data , but do not require the multiple Availbility Zones
- S3 - Intelligent Tiering - Designed to optimize costs by automatically moving data to the most cost-effective access tier, w/o performance impac t or operational overhead.
What are the S3 Storage Classes
- S3 Standard
- S3 - IA (Infrequeunctlyh accessed) Lower fee that S3 but you are charged a retrieval fee.
- S3 One Zone -= IA - where you want a lower cost option for infrequently accessed data , but do not require the multiple Availbility Zones
- S3 - Intelligent Tiering - Uses ML Designed to optimize costs by automatically moving data to the most cost-effective access tier, w/o performance impac t or operational overhead.
- Glacier - Is secure durable low-cost storage class ofr data archiving. Retreival times are configuratble fr om minutes to hours.
- Glacier Deep Archive - Lowest cost storage,
S3 - Billing what are the wayus
- Storage
- # of Requests
- Storage Managemetnt Pricing
- Data Transfer Pricing
- Transfer Acceleration - This is effectively cloudfront.
- Cross-region replication
S3 - Cross Region Replication Requirements
Version must be enabled on both the source and destination.
2. Regions must be unique
Files in an existing budget are not replicated automatically
all subsequent fupda
