1. SQL Server Compression Estimation Presented by Warwick Rudd – warwick.rudd@wardyit.com

2. About Warwick Rudd SQL Server Consultant WARDY IT Solutions – Email: warwick.rudd@wardyit.comwarwick.rudd@wardyit.com Microsoft Certified IT Professional – SQL 2008 Admin (MCITP SQL 2008 Admin) Microsoft Certified Trainer (MCT) WARDY IT Solutions – Australia’s leading SQL Server specialists – Deloitte Technology Fast 500 Asia Pacific 2010 Winner

3. Contents History of Compression SQL Server Database Compression SQL Server Backup Compression Compression Estimation Tool

4. What is Compression ? The reduction in size of data to save space or processing time.

5. History of Compression SQL Server 2005 SP2 – New Data type - VarDecimal SQL Server 2008 – Database & Backup compression SQL Server 2008 R2 – Unicode data compression

6. Database Compression Matrix SQL Server 2005 SP2 SQL Server 2008 SQL Server 2008 R2 EditionEnterprise Enterprise & Data Center Compression Type VarDecimal Row Level Page Level Unicode

7. Database Compression Cost Benefit Analysis BenefitsCost Performance improvementsIncreased CPU utilisation More data in memory Reduced I/O Reduced disk space usage Database data files Backup files Reduced time to backup Cost Savings

8. Database Compression Estimation SQL Server 2005 SP2 – Sys.sp_estimated_rowsize_reduction_for_vardecimal SQL Server 2008 & R2 – Sp_estimate_data_compression_savings

9. Enabling Database Compression SQL Server 2005 SP2 – Enable database for Vardecimal Storage format Sp_db_vardecimal_storage_format – Enabling table for Vardecimal Storage format Sp_tableoption SQL Server 2008 & R2 – Alter Table [TableName] Rebuild with (Data_compression = Compression Type) Compression Types – Row – Page – None

10. Enabling Database Compression – Alter Table [TableName] Rebuild Partition = All with (Data_compression = Compression Type on Partitions (x to n)) Compression Types – Row – Page – None – Alter Index [IndexName] on [TableName] Rebuild with (Data_compression = Compression Type) Compression Types – Row – Page – None

11. Things to consider Data types not able to be compressed – XML – BLOB – MAX Datatypes Tables not eligible for compression – Maximum row size + compression overhead > 8060 bytes

12. Things to consider Compression with partitions – Splitting a range – Merging a range – Switching partitions

13. SQL Server Database Compression Demo SQL Server Database Compression Demo

14. Backup Compression Matrix SQL Server 2005 SP2 SQL Server 2008 SQL Server 2008 R2 Edition Standard Enterprise Datacenter

15. Backup Compression Cost Benefit Analysis BenefitsCost Performance improvementsIncreased CPU utilisation Reduced I/O Reduced disk space usage Reduced time to backup Cost Savings

16. Enabling Backup Compression Instance level – SSMS – Transact SQL Defaults can be overidden – Transaction Log Shipping – Maintenance Plans – SSMS – Transact SQL

17. SQL Server Backup Compression Demo SQL Server Backup Compression Demo

18. Compression Estimation Tool Available from Codeplex – http://ssce.codeplex.com/ http://ssce.codeplex.com/

19. Compression Estimation Tool Demo Compression Estimation Tool Demo

20. Thanks for listening Warwick.rudd@wardyit.com 0403 144 302 http://www.wardyit.com http://www.wardyit.com/blog

21. Other Resources http://blogs.msdn.com/b/sqlserverstorageengine/archive/tags/da ta+compression/ http://blogs.msdn.com/b/sqlserverstorageengine/archive/tags/da ta+compression/ http://msdn.microsoft.com/en- us/library/dd894051(v=sql.100).aspx#_Appendix_C:_Script http://msdn.microsoft.com/en- us/library/dd894051(v=sql.100).aspx#_Appendix_C:_Script http://msdn.microsoft.com/en-us/library/cc280576.aspx http://msdn.microsoft.com/en-us/library/cc280464.aspx