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Symptoms

The wrong sizing selection may cause slowness, failovers and even outages. In addition, it  may lead to a wide range of false alarms specially in HA mode, where both machines are unable to check each other.

Purpose

How to collect a related and useful AWS cloudwatch data to decide if you are on the correct instance size and/or storage type or not.

Also It will help our support team and solution architect with reviewing the overall performance of the instance.

Resolution

Introduction

Network IO, EBS throughput and Instance CPU load are crucial metrics for SoftNAS appliance to work properly specially in HA cluster mode. At some cases, SoftNAS support team are interested in some AWS cloudwatch metrics that will help them precisely determine the root cause of any issue you are facing. This article is describing how to collect useful data from cloudwatch to help our support with their analysis.

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Note: Cloudwatch metrics are per Minute and the numbers in the link are per second

Additional Information

https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/acw-ug.pdf

Update History

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