How much space would compressing a particular index will save? How will this affect query performance? Derek Colley walks you through the effects of using data compression in SQL Server.
In my last tip, I shared some ideas for determining if you should consider breaking up the e-mail addresses you're storing, even putting the domain names in a separate table. I performed storage and timing comparisons for working with 10,000 unique e-mail addresses, but I completely ignored data compression. I wanted to revisit the same test case and apply data compression to the tables and see how that impacted the outcome.