Check out this great article by SQL Server guru @MrDenny
Title: Massive Speed and HA
Subtitle: Two Things That Usually Don’t Go Together
First Paragraph: Question: William asks “I have a SQL Server which needs both high availability and high-speed storage. Even SAN storage with SSD based hard drives isn’t providing the performance levels that we are looking for, while still getting the failover cluster HA solution that we need for our SQL Server 2008 R2 database?”
Denny Cherry is the owner and principal consultant for Denny Cherry & Associates Consulting and has over a decade of experience working with platforms such as Microsoft SQL Server, Hyper-V, vSphere and Enterprise Storage solutions. Denny’s areas of technical expertise include system architecture, performance tuning, security, replication and troubleshooting. Denny currently holds several of the Microsoft Certifications related to SQL Server for versions 2000 through 2008 including the Microsoft Certified Master as well as being a Microsoft MVP for several years. Denny has written several books and dozens of technical articles on SQL Server management and how SQL Server integrates with various other technologies.
Reproduced with permission from https://clusteringformeremortals.com/2013/08/08/sql-server-massive-speed-and-high-availability/