What is the AWS EBS limit

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I have a requirement of using one windows EC2 instances and 2 ubuntu instances, I read in aws docs saying that atmost you can use 30GB of EBS.

So how can i achieve my requirement, if i use the instances only for 5 hours a day how does it calculate, does it calculate when i allocate the instance or instances or running.

Can anyone help me know so that, i can use without any charges 

Dec 28, 2018 in AWS by Sradha
• 1,760 points

1 answer to this question.

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Hey @Sradha,

Amazon EBS volumes are billed by the gigabyte-month (GB/m)

So this limit of 30 GB is for a month. Anything exceeding this will be charged.


In a 31-day month, you are billed for one gigabyte-month in the following scenarios:

  • If you have a 31-GB volume that was active for 24 hours.
  • If you have a 1-GB volume that was active for 744 hours (the number of hours in 31 days).
  • EC2 instances accrue charges only while they're running, but EBS volumes attached to instances continue to retain information and accrue charges, even when the instance is stopped. 
  • You can provision your EBS volume in the 3 instances in such a way that the total volume does not exceed 30 GB.( eg: 8+8+8 )
answered Dec 28, 2018 by Samprit Mishra

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