Tuesday, 8 January 2019

AWS EC2 Instance Classes and Types

There are different types of EC2 instances which you can choose for your application. There are varying combinations of CPU, memory, storage (EBS or Instance storage), and networking capacity. Broadly, we can classify EC2 instances as:

1. General Purpose
2. Compute Optimized
3. Memory Optimized
4. Storage Optimized
5. Accelerated Computing / GPU Optimized

1. General Purpose

Classes: T2 (T stands for Tiny) - Burstable Performance, M5 (M stands for Medium) - Fixed Performance

Suited for: Development environments, Small and mid-sized databases, Low-traffic web applications, Build servers, Code repositories, Testing and staging environments, Early product experiments etc.

Instance sizes: nano, micro, small, medium, large, xlarge, 2xlarge, 4xlarge, 8xlarge, 10xlarge

CPU Credits: T2 instances accrue CPU credits when they are idle, and use CPU credits when they are active. T2 instances are a good choice for workloads that don’t use the full CPU often or consistently, but occasionally need to burst (e.g. web servers, developer environments and small databases).

2. Compute Optimized

Classes: C5 (C stands for Compute)

3. Memory Optimized

Classes: X1, R4 (R stands for RAM)

Charged Per GB of RAM

4. Storage Optimized

Classes: I3 (I stands for I/O), D2 (D stands for Dense)

Suited for: Data Warehouse, intended for workloads that need greater sequential write and read access to larger data sets

5. Accelerated Computing / GPU Optimized

Classes: P3, G3 (G stands for Graphics), F1

Uses NVIDIA GPU

Suited for: Low Latency, High Throughput, High IOPS, Machine Learning, Deep Learning, Big Data Analytics, In-memory Analytics, Reporting, Graphics, Gaming, Video Encoding, High Performance Databases, Batch Processing, Streaming, Speech Recognition, Ad Serving, 3D Visualization, Distributed Analytics, Computational Finance, Financial Analytics, Computational Fluid Dynamics, Genomics Research, Drug Discovery, Scientific Modelling, Molecular Modeling, Media Transcoding etc.

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