AWS Certified Developer Associate · Free Practice Question Easy
Question 17
A pharmaceutical company runs their database workloads on Provisioned IOPS SSD (io1) volumes.
As a Developer Associate, which of the following options would you identify as an INVALID configuration for io1 EBS volume types?
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A
200 GiB size volume with 2000 IOPS
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B
200 GiB size volume with 15000 IOPS
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C
200 GiB size volume with 5000 IOPS
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D
200 GiB size volume with 10000 IOPS
Reveal correct answer
Correct answer: B
Explanation
Correct option:
200 GiB size volume with 15000 IOPS - This is an invalid configuration. The maximum ratio of provisioned IOPS to requested volume size (in GiB) is 50:1. So, for a 200 GiB volume size, max IOPS possible is 200*50 = 10000 IOPS.
Overview of Provisioned IOPS SSD (io1) volumes:
Incorrect options:
Provisioned IOPS SSD (io1) volumes allow you to specify a consistent IOPS rate when you create the volume, and Amazon EBS delivers the provisioned performance 99.9 percent of the time. An io1 volume can range in size from 4 GiB to 16 TiB. The maximum ratio of provisioned IOPS to the requested volume size (in GiB) is 50:1. For example, a 100 GiB volume can be provisioned with up to 5,000 IOPS.
200 GiB size volume with 2000 IOPS - As explained above, up to 10000 IOPS is a valid configuration for the given use-case.
200 GiB size volume with 10000 IOPS - As explained above, up to 10000 IOPS is a valid configuration for the given use-case.
200 GiB size volume with 5000 IOPS - As explained above, up to 10000 IOPS is a valid configuration for the given use-case.
Reference:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-volume-types.html
Discussion
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