Elastic Block Storage (EBS) is a block-level storage service provided by Amazon Web Services (AWS). It offers persistent storage volumes that can be attached to Amazon Elastic Compute Cloud (EC2) instances. EBS volumes are designed to provide durable, highly available, and scalable storage for your EC2 instances.
EBS volumes function like hard drives and can be used as primary storage for operating systems, databases, and applications running on EC2 instances. They provide persistent block-level storage, meaning that the data stored on an EBS volume persists even after the associated EC2 instance is terminated.
EBS volumes offer different types to meet various performance and cost requirements. The available types include:
1. General Purpose SSD (gp2): This is the default volume type and provides a balance of price and performance for a wide range of workloads.
2. Provisioned IOPS SSD (io1): This type is designed for applications that require high I/O performance and consistent low-latency access to storage.
3. Throughput Optimized HDD (st1): It offers low-cost storage for frequently accessed, throughput-intensive workloads.
4. Cold HDD (sc1): This type is ideal for less frequently accessed workloads where the storage cost is a significant consideration.
5. Magnetic (standard): This is the original EBS volume type, and it provides a baseline level of performance at a lower cost.
EBS volumes can be created, attached, detached, and deleted as needed. They can also be encrypted to ensure the security of your data. Additionally, AWS provides features like snapshots and replication for backup, restore, and data protection purposes.
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Overall, EBS provides flexible and scalable storage options for EC2 instances, allowing you to meet the storage requirements of your applications in AWS.
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