Elastic Block Store Quiz
In A company’s business continuity department is worried about the EBS Volumes hosted in AWS and wants to ensure that redundancy is achieved for the same. What must be done to achieve this in a cost-effective manner?
A. Nothing, since by default, EBS Volumes are replicated within their Availability Zones.
B. Copy the data to S3 bucket for data redundancy.
C. Create EBS Snapshots in another Availability Zone for data redundancy.
D. Copy the data to a DynamoDB table for data redundancy.
A. Nothing, since by default, EBS Volumes are replicated within their Availability Zones.
The AWS Documentation mentions the following:
Amazon Elastic Block Store (Amazon EBS) provides persistent block storage volumes for use with Amazon EC2 instances in the AWS Cloud. Each Amazon EBS volume is automatically replicated within its Availability Zone to protect you from component failure, offering high availability and durability. Amazon EBS volumes offer the consistent and low-latency performance needed to run your workloads. With Amazon EBS, you can scale your usage up or down within minutes – all while paying a low price for only what you provision.
For more information on EBS, please visit the following URL:
https://aws.amazon.com/ebs/Note:Amazon EBS Availability & Durability:Amazon EBS volumes are designed to be highly available and reliable. At no additional charge to you, Amazon EBS volume data is replicated across multiple servers in an Availability Zone to prevent the loss of data from the failure of any single componentAmazon EBS volumes are designed for an annual failure rate (AFR) of between 0.1% – 0.2%, where failure refers to a complete or partial loss of the volume, depending on the size and performance of the volume. This makes EBS volumes 20 times more reliable than typical commodity disk drives, which fail with an AFR of around 4%. For example, if you have 1,000 EBS volumes running for 1 year, you should expect 1 to 2 will have a failure. EBS also supports a snapshot feature, which is a good way to take point-in-time backups of your data.Please refer below link.https://aws.amazon.com/ebs/details/#AvailabilityandDurabilityWe need to notice two things. one – the question says that we need to achieve in a cost-effective manner. Two – we are testing whether you understood the core functionality of the service in CSAA exam. You can expect this kind of question in the AWS exam as well. Try to understand the question and answer.In the exam, if they mentioned specifically about the replication based on the multi-AZ, then you can go with the Option C. So based on the question, the answer will differ.
