A user is trying to create a PIOPS EBS volume with 8 GB size and 200 IOPS. Will AWS create the volume?
A.
Yes, since the ratio between EBS and IOPS is less than 30
B.
No, since the PIOPS and EBS size ratio is less than 30
C.
No, the EBS size is less than 10 GB
D.
Yes, since PIOPS is higher than 100
Explanation:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html
An io1 volume can range in size from 4 GiB to 16 TiB and you can provision up to 20,000 IOPS per volume. The ratio of
IOPS provisioned to the volume size requested can be a maximum of 30; for example, a volume with 3,000 IOPS must
be at least 100 GiB. You can stripe multiple volumes together in a RAID configuration for larger size and greater
performance.
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Isn’t this 50 to 1 now?
from http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html :
“http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html”
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Sorry, meant to include this snippet:
“The maximum ratio of provisioned IOPS to requested volume size (in GiB) is 50:1. For example, a 100 GiB volume can be provisioned with up to 5,000 IOPS. Any volume 400 GiB in size or greater allows provisioning up to the 20,000 IOPS maximum.”
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Yes it is 50:1 , diskspace:iops = 50:1 max.
For us it is 8000/200 = 40:1
So the option seems to be wrong
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8*50=400 IOPS max so we are OK here with 200.
Option A
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outdate question, ratio is 50:1, volume size 4GB ~ 16TB, max IOPS 20,000
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A
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