Rolf Tesmer looks at whether to use SSDs or Premium Disk for SQL Server instances on Azure IaaS:
To test the throughput I will run a set test with the TempDB database on D:\ (local SSD) and then rerun the test again with the TempDB moved onto F:\ (P30 premium disk). Between the tests SQL Server is restarted so we’re starting with a clean cache and state.
The test SQL script will create a temporary table and then run a series of insert, update, select and delete queries against that table. We’ll then capture and record the statistics and time.
The results were interesting; read on to learn more.