This is going to be quick one because a picture is better than a thousand words.
We have three storage tiers in Telia Cloud Platform – Tier-1 on SSD, Tier-2 on SAS and Tier-3 on NL-SAS, and below are the results from CrystalDiskMark 6.0.0 in a Windows Server 2016 VM on a hpc1.a5 flavor.
As for the IOPS@4KB Q32T1 (click on the links below for a full CrystalDiskMark output):