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The block store is related to EBS, which is what AWS's other postgres option, RDS, also uses. An EBS system failure is rare and could potentially take down both
by lozenge 9y ago
The block store is related to EBS, which is what AWS's other postgres option, RDS, also uses. An EBS system failure is rare and could potentially take down both services, and EC2 as well.
- _msw_ 9y agohttps://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.