What is the AWS EBS limit

Question

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 
 

Answer 1

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.

eg:

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 )