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Amazon EC2 instance types

Exploring Amazon EC2 Instance Types: Choosing the Right Virtual Machine for Your Workload

Amazon Elastic Compute Cloud (Amazon EC2) provides many instance types, each optimized for different use cases and workloads. Here's an overview of the various EC2 instance types from my last knowledge update in September 2021. Please note that Amazon EC2 continually adds new instance types and some instance families may have been updated or replaced since then.

  1. General Purpose Instances (T2, M3, M4, M5, M6, M7): These instances suit various workloads, including web applications, development and testing, and small to medium-sized databases.

  2. Compute-Optimized Instances (C3, C4, C5, C6, C7): Designed for compute-intensive workloads, these instances are ideal for tasks like data analysis, batch processing, and scientific computing.

  3. Memory-Optimized Instances (R3, R4, R5, R6, X1, X2, X2gd, z1d): These instances provide high memory capacity and are well-suited for memory-intensive applications like in-memory databases and big data analytics.

  4. Storage-Optimized Instances (D2, H1, I3, I4): These instances are designed for storage-heavy workloads such as data warehousing, NoSQL databases, and distributed file systems.

  5. Accelerated Computing Instances (P2, P3, P4, G2, G3, G4, G4ad, F1, Inf1): These instances are equipped with powerful GPUs and FPGAs, making them ideal for tasks like machine learning, deep learning, and video encoding.

  6. Burstable Instances (T2, T3, T4g, T4gd): These instances offer a baseline level of CPU performance that can burst to higher levels when needed. They are cost-effective for workloads with variable CPU demands.

  7. Dense Storage Instances (D2, H1, I3, I4, u-6tb1.metal): These instances provide high-density, high-capacity storage for large data sets and data-intensive applications.

  8. Dense Compute Instances (H1, I3, I4): These instances combine high CPU and memory with ample storage capacity, making them suitable for big data and analytics.

  9. High I/O Instances (I3, I4, i3.metal): These instances are optimized for high I/O performance and are valid for applications requiring fast and consistent storage performance.

  10. Network-Optimized Instances (N4, N5, N6): Designed for workloads that require high network bandwidth and low-latency networking, such as content delivery and media streaming.

  11. Metal Instances (e.g., i3.metal, m5.metal): These are EC2 instances that provide direct access to the underlying physical hardware, which can be beneficial for specific use cases like running legacy applications.

  12. Arm-Based Instances (Graviton, Graviton2, M6g, C6g, R6g, T4g, A1, etc.): Amazon introduced Arm-based instances that use custom-designed AWS Graviton processors. These instances are cost-effective and energy-efficient for various workloads.

Amazon EC2 instances come in various sizes within each instance family, allowing users to select the right CPU, memory, storage, and network resources for their specific requirements. When choosing an instance type, it's essential to consider factors like performance, cost, and compatibility with your workload. Additionally, it's advisable to check the AWS documentation for the most up-to-date information on available instance types.

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