SQL SEREVR IO

Designing High Performance I/O Systems for SQL Server

 https://sqlbits.com/Downloads/86/Designing%20I%20O%20systems%20for%20SQL%20Server%20-%20Thomas%20Kejser.pptx

IOPS Are A Scam

http://www.brentozar.com/archive/2013/09/iops-are-a-scam/