Redshift recommended free space percentage

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I have a customer who is performing a migration of their on-premises DW to Redshift and is concerned about the amount of free space that the Redshift cluster should have at any time in order to maintain a good performance and don't run into issues when executing heavy queries or commands.

Do we have any guidance the maximum disk space percentage used within the cluster?

AWS
質問済み 6年前820ビュー
2回答
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承認された回答

Between 70% to 80% should be the maximum storage space used. This is for regular queries and day to day operations. You can configure a CloudWatch Alarm to monitor the disk usage of your cluster. If the customer is vacuuming a large table - they currently require approximately 3x the size of it in free space. As an example, a table that consumes 15% of cluster space, will require 45% free space in order to vacuum.

AWS
エキスパート
回答済み 6年前
0

correct, Maintain at least 20% free space or three times the size of the largest table https://d1.awsstatic.com/events/reinvent/2019/Deep_dive_and_best_practices_for_Amazon_Redshift_ANT418.pdf

AWS
回答済み 8ヶ月前

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