Announcing higher EBS and Networking performance and 1-year reservation purchase option on Amazon EC2 High Memory Instances
Starting today, Amazon EC2 High Memory instances with instance sizes that offer 6, 9, 12, 18, and 24 TB of memory will offer higher storage and network bandwidths. Each instance can drive 38 Gbps of dedicated storage bandwidth and an additional 100 Gbps of network bandwidth which equates to a performance boost of up to 2X for storage bandwidth for all sizes and up to 4X for network bandwidth for 6 TB, 9 TB, and 12 TB instances. Customers can utilize the higher storage and network bandwidths to improve workload performance and to fasten backup and recovery workflows for mission-critical enterprise applications such as SAP.
Source:: Amazon AWS