What are the disks means in the aurora rds cluster?

Question

Recently I have started working with the aws and now I need to write a python script for disk congestion on aurora rds cluster using chaos engineering, for that I have understood pretty good information but the thing is that when I am using the aurora volume status query it is giving me the no.of disks and nodes present in my cluster. So I have only 1 db cluster with a reader and a writer node but the query is giving me as disks present are 96 and the nodes present are 96. How is that possible, as per the documentation each cluster contains 6 nodes, 2 in each AZ then why am I getting nodes as 96 and disks as 96 and what exactly these disks are? How many disks can be present for a node?

Answer

"The Aurora cluster illustrates the separation of compute capacity and storage. For example, an Aurora configuration with only a single DB instance is still a cluster, because the underlying storage volume involves multiple storage nodes distributed across multiple Availability Zones (AZs)." - Amazon Aurora DB clusters

Please also refer Amazon Aurora storage and reliability

Ashish_P

con risposta 2 anni fa

Please also refer [Amazon Aurora storage and reliability](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Overview.StorageReliability.html)

Answer

Aurora storage consists of 10G chunks called protection groups. What exactly is the size of your database? So depending upon the size of your database, you can calculate as to how many Protection groups there are going to be and then its distributed six times , twice in each AZ I am doubtful this information is exposed to the user.

**PS: Please accept the answer if it resolves your issue **

What are the disks means in the aurora rds cluster?

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