https://media.amazonwebservices.com/blog/2017/aurora-design-considerations-paper.pdf https://media.amazonwebservices.com/blog/2017/aurora-design-... """ These

https://media.amazonwebservices.com/blog/2017/aurora-design-considerations-paper.pdf https://media.amazonwebservices.com/blog/2017/aurora-design-... """ These are each replicated 6 ways into Protection Groups (PGs) so that each PG consists of six 10 GB segments, organized across three AZs, with two segments in each AZ. A storage volume is a concatenated set of PGs, physically implemented using a large fleet of storage nodes that are provisioned as virtual hosts with attached SSDs using Amazon Elastic Compute Cloud (EC2). """ The storage nodes are using local SSD instance storage, not EBS.