Step 8: Use separate disk controllers

Ideally, you should have a separate controller for each file group. Multiple file groups offer better performance on locally attached storage (local disks) when you store your indexes, image file groups, swap file and full text catalogs on different disks, each with its own controller.

In SQL Server 2005, you can improve table partitioning with multiple controllers and disk drives; use one controller and set of drives for each partition.

Spec your SQL Server hardware needs

 Home: Introduction
 Step 1: Invest in good application design
 Step 2: Understand your workload
 Step 3: Know your memory support limitations
 Step 4: Choose a reliable hardware brand
 Step 5: Take advantage of 64-bit
 Step 6: Take advantage of storage area networks
 Step 7: Properly configure your RAID arrays
 Step 8: Use separate disk controllers
 Step 9: Choose and optimize your disks wisely
 Step 10: Optimize CPU activity and speed