9.2. Filegroups
As we covered earlier, you can think of filegroups as logical containers for database disk files. As shown in figure 9.4, the default configuration for a new database is a single filegroup called primary, which contains one data file in which all database objects are stored.
Before we cover recommended filegroup configurations, let's look at some of the ways in which filegroups are used (and abused), beginning with controlling object placement.
9.2.1. Controlling object placement
A common performance-tuning recommendation is to create tables on one filegroup and indexes on another (or some other combination), with each filegroup containing files on dedicated disks. For example, Filegroup 1 (tables) contains files on a RAID volume ...
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