The I2 instance type was designed to host I/O intensive workloads typically generated by relational databases, NoSQL databases, and transactional systems. The largest I2 instance type can deliver over 365K random reads per second and over 315K random writes per second, both measured with a block size of 4 KB. With four instance sizes, you can start small and scale up as your storage and I/O needs grow.
This is our second generation High I/O instance type, picking up where the HI1 instance left off. In comparison to the HI1 instance type, members of the I2 family offer faster processors, three additional instance sizes, a doubling of the amount of memory per vCPU, and 56% more SSD-based instance storage.