At the AWS re:Invent! show in Las Vegas, Amazon.com CTO Werner Vogels announced the I2 instances are optimized for high performance random I/O.
AWS said the greater performance is achieved using 2.5 GHz intel Xeon E5-2670v2 processors with Turbo mode enabled. EC2’s new enhanced networking, and SSDs. At the high-end, i2.8xlarge instances will be able to deliver 350,000 random read IOPS and 320,000 random write IOPS.
| Instance Name | vCPU Count | RAM | Instance Storage (SSD) |
| i2.large | 2 | 15 GiB | 1 x 360 GB |
| i2.xlarge | 4 | 30.5 GiB | 1 x 720 GB |
| i2.2xlarge | 8 | 61 GiB | 2 x 720 GB |
| i2.4xlarge | 16 | 122 GiB | 4 x 720 GB |
| i2.8xlarge | 32 | 244 GiB | 8 x 720 GB |