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Can someone help m e to understand with how the throughput works with EBS Optimised Instance. I am in process of benchmarking EBS disk for MSSQL server on top of EC2 instances. Today i did perform a IOPS test using CrystalDiskMark tool and i found that when with perfmon counters the maximum throughput its showing is the one assigned to the instance , as an example I am using X1e.4XLarge which is having a throughput of ~230 MiB/s and during test i am getting this number only , so just wanted to understand why i am not getting EBS throughput as what it supposed to provide , reason being per aws documentation with EBS optimized instances we get dedicated network between ec2 instances and ebs volumes and instance throughput is additional on top of EBS throughput..

Is that something wrong i am performing or seeing data stats with benchmarking. Highly appreciate help.
Abhishek
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  • This question belongs on ServerFault not here. But more important, what throughput number do you expect, and why? When I look at the specs for x1e.4xl, 230 MB/sec seems about right. – Parsifal May 28 '20 at 19:53
  • Thats correct and that is instance throughput which is additional in nature . Lets say if i attach EBS volume so i am not seeing EBS volume throughput over there which is strange. – Abhishek May 29 '20 at 05:15
  • I'm sorry, but I have absolutely no idea what you're trying to convey. However, my original advice stands: post this question on ServerFault, and _show your tests_. Put the actual numbers in the question, and compare them to the numbers that you expect to see. – Parsifal May 29 '20 at 14:09

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