Module 5 Flashcards
What is an instance store?
An instance store provides temporary block-level storage for an Amazon EC2 instance. An instance store is disk storage that is physically attached to the host computer for an EC2 instance, and therefore has the same lifespan as the instance. When the instance is terminated, you lose any data in the instance store.
Describe Amazon Elastic Block Store.
Amazon Elastic Block Store (Amazon EBS) is a service that provides block-level storage volumes that you can use with Amazon EC2 instances. If you stop or terminate an Amazon EC2 instance, all the data on the attached EBS volume remains available.
How do you backup EBS volumes?
You create a Amazon EBS snapshot. This means that the first backup taken of a volume copies all the data. For subsequent backups, only the blocks of data that have changed since the most recent snapshot are saved.
Describe Amazon Simple Storage Service.
Amazon Simple Storage Service (Amazon S3) is a service that provides object-level storage. In object storage, each object consists of data, metadata, and a key.
What is the difference between Amazon Elastic Block Store and Amazon Simple Storage Service.
Amazon EBS is block storage, which means that only the data that is changed is updated. Amazon S3 is object level storage, which means that when data is changed, the whole object is updated.
Which Amazon storage option provides unlimited storage space (5 TB)?
Amazon S3
How do you pay for Amazon S3 storage classes?
You only pay for what you use.
What factors do you need to consider when choosing an Amazon S3 storage class.
How often you plan to retrieve your data
How available you need your data to be
List and describe the Amazon S3 Storage classes.
S3 Standard: Designed for frequently accessed data. Stores data in a minimum of three availability zones.
S3 Standard-Infrequent Access: Ideal for infrequently accessed data. Similar to S3 Standard but has a lower storage price and higher retrieval price.
S3 One Zone-Infrequent Access: Stores data in a single availability zone. Has a lower storage price than S3 Standard IA.
S3 Intelligent-Tiering: Ideal for data with unknown or changing access patterns. Requires a small monthly monitoring and automation fee per object
S3 Glacier: Low-cost storage designed for data archiving. Able to retrieve objects within a few minutes to hours
S3 Glacier Deep Archive: Lowest-cost object storage class ideal for archiving. Able to retrieve objects within 12 hours
What is Amazon Elastic File System (Amazon EFS)?
Amazon Elastic File System (Amazon EFS) is a scalable file system used with AWS Cloud services and on-premises resources. As you add and remove files, Amazon EFS grows and shrinks automatically. It can scale on demand to petabytes without disrupting applications.
What is the difference between Amazon EBS and Amazon EFS?
EBS stores data in a single availability zone. EFS stores data in and across multiple availability zones.
Describe Amazon Relational Database Service
Amazon RDS is a service that allows you to run relational databases in the AWS Cloud. Amazon RDS is a managed service that automates tasks such as hardware provisioning, database setup, patching, and backups.
Give the name of Amazon’s enterprise-class relational database.
Amazon Aurora
Give the name of Amazon’s NoSQL database.
Amazon Dynamo DB
In which situation would you want to use NoSQL databases?
For use cases that require high performance while scaling.
