EBS Volume Types Flashcards
What is Amazon EBS?
Amazon Elastic Block Store (EBS) provides persistent block storage volumes for use with Amazon EC2 instances. EBS volumes are automatically replicated within their Availability Zone to protect from component failure, offering high availability and durability.
What are the different types of EBS volumes?
The different types of EBS volumes include General Purpose SSD (gp2 and gp3), Provisioned IOPS SSD (io1 and io2), Throughput Optimized HDD (st1), and Cold HDD (sc1).
What is a General Purpose SSD volume?
General Purpose SSD volumes (gp2 and gp3) are designed to support a wide range of transactional workloads, such as virtual desktops, development and test environments, and low-latency interactive applications. They offer a balance of price and performance.
What defines a Provisioned IOPS SSD volume?
Provisioned IOPS SSD volumes (io1 and io2) are designed for I/O intensive applications such as large relational or NoSQL databases. They provide high performance and low latency with provisioned IOPS (Input/Output Operations Per Second).
What is a Throughput Optimized HDD volume?
Throughput Optimized HDD (st1) volumes are designed for frequently accessed, throughput-intensive workloads such as big data, data warehouses, and log processing, offering cost-effective storage with higher throughput.
What characterizes a Cold HDD volume?
Cold HDD (sc1) volumes are designed for less frequently accessed workloads. They are the most cost-effective option for infrequently accessed data that requires large, cheap volumes of storage with lower throughput.
How do you choose the right EBS volume type?
Choosing the right EBS volume type involves assessing your workload’s specific performance and cost requirements. Consider factors like I/O intensity, throughput, latency sensitivity, and how critical the application is to determine the most suitable volume type.
What are the performance differences between gp2 and gp3 volumes?
Gp3 volumes offer higher baseline performance and scalability at a lower cost compared to gp2 volumes. With gp3, you can independently configure IOPS and throughput without increasing storage capacity.
How can EBS volumes be used with EC2 instances?
EBS volumes can be attached to EC2 instances as primary storage for the root file system or as additional storage for data requiring persistence. Multiple EBS volumes can be mounted to the same instance, and volumes can be detached and reattached to different instances.
What is the impact of choosing the wrong EBS volume type?
Choosing the wrong EBS volume type can lead to suboptimal application performance and higher costs. Over-provisioned volumes may incur unnecessary expenses, while under-provisioned volumes can result in degraded performance and user experience.
