Amazon Relational Database Service (Amazon RDS) now supports M6in, M6idn, R6in, and R6idn database (DB) instances for RDS for PostgreSQL, MySQL, and MariaDB. These network optimized DB instances deliver up to 200Gbps network bandwidth, which is 300% more than similar sized M6i and R6i database instances. Enhanced network bandwidth makes M6in and R6in DB instances ideal for write-intensive workloads. M6idn and R6idn support local block storage with up to 7.6 TB of NVMe-based solid state disk (SSD) storage.
Source:: Amazon AWS