Tableau on AWS EC2 and Azure
Blog posts that explain this viz are here and here and here
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Below, you'll see two images for each combination of EC2 or Azure instance and storage I tested. The first represents the first 6 minutes of rendering.

It is interesting to see how the CPU (blue counter: Processor - % Processor Time, _Total) and disk (black counter: Logical Disk - Average Disk sec / Transfer) spike on a newly bounced OS.

The second image represents the instance once it has "warmed up" and records rending minutes 7-12.

Instance Storage Concurrent Users 1st six minutes 2nd six minutes
c3.xlarge 1 magnetic 2
c3.xlarge 1 magnetic 10
c3.2xlarge 1 magnetic 2
c3.2xlarge 1 magnetic 10
m3.xlarge 1 magnetic 2
m3.xlarge 1 magnetic 10
m3.2xlarge 1 magnetic 2
m3.2xlarge 1 magnetic 10
c3.xlarge 1 GP SSD 10
c3.2xlarge 1 GP SSD 2
c3.2xlarge 1 GP SSD 10
m3.xlarge 1 GP SSD 2
m3.xlarge 1 GP SSD 10
m3.2xlarge 1 GP SSD 2
m3.2xlarge 1 GP SSD 10
c3.xlarge 2 GP SSDs striped as single volume 2
c3.xlarge 2 GP SSDs striped as single volume 10
c3.2xlarge 2 GP SSDs striped as single volume 2
c3.2xlarge 2 GP SSDs striped as single volume 10
m3.xlarge 2 GP SSDs striped as single volume 2
m3.xlarge 2 GP SSDs striped as single volume 10
m3.xlarge 2 GP SSDs striped as single volume 10
m3.xlarge 2 GP SSDs striped as single volume 10
c3.2xlarge 3 EBS SSDs / 1500 IOPS each striped as single volume 10
c3.4xlarge 3 EBS SSDs / 1500 IOPS each striped as single volume 10
c3.2xlarge 3 GP SSDs striped as single volume 10
c3.4xlarge 3 GP SSDs striped as single volume 10
D4 3 disks Striped as single volume 2
D4 3 disks Striped (Azure Caching On) as single volume 10
D4 10 disks Striped (Azure Caching Off) as single volume 2
D4 10 disks Striped (Azure Caching Off) as single volume 10
D14 3 disks Striped (Azure Caching On) as single volume 2
D14 3 disks Striped (Azure Caching Off) as single volume 10
D14 3 disks Striped (Azure Caching On) as single volume 10
D14 10 disks Striped (Azure Caching Off) as single volume 2
D14 10 disks Striped (Azure Caching Off) as single volume 10