Multiple instances consolidation practices
- 1. MS SQL Server: Multiple Instances Consolidation PracticesAlexander PrusakovSenior MS SQL Server DBAMay, 2010
- 2. Sr. MS SQL Server DBA (consultant) in one of the biggest financial institution in the world 20+ years of IT experience (business users, ERPs, databases and applications support, software development, data warehousing, etc.)15+ years of experience with MS SQL ServerMBA, MCITP: Database Administrator 2005/2008Industries: banking/finance, energy, education, health care, manufacturing, IT consulting.Speaker’s Background:
- 3. Why;How;What to expect and how it works;Summary;Q and A.Agenda:
- 4. TermsConsolidation refers to the merger from multiple computer sources into single.Virtualization refers to the abstraction of computer resources.Multi-instancing refers to the utilization of the same computer sources by multiple independent SQL Servers
- 9. Unexpected need in new SQL Server without budget for a hardware;Buzz about virtualization;Enterprise environment;Curiosity;How did I step in:
- 10. Reduce hardware cost Reduce pollution (carbon footprint)Reduce labor/support cost Increase resources utilization Look nice in other’s eyesWhy to consolidate:
- 11. Reduce hardware cost:Actually it might not (MSRP pre-configured estimated):Enterprise level server: 16 sockets, 196GB (16P) about$175,000.00;HP ProLiant DL785G5 8380 -128GB (8P)$34,999.00;HP ProLiant DL380G6 E5504-4GB (1P)$ 2,289.00 x 8 = $ 18,312.00;$ 2,289.00 x 16 = $ 36,624.00;
- 12. Real Benefits:Space: 2U x 8 = 16U vs. 7UPower: 460x8 = 3,680 vs. 1,300 WCooling cost: varyReduced carbon footprint (including manufacturing and usage)Ability to add physical CPUs and/or memory
- 13. Reduce support cost:Cost of annual licensing;OS – 1 to 8;SQL Server: 8 x 5,999.00 = 47,992.00 8 x 24,999.00 = 199,992.00Load performance improvement;Cost of SysAdmin support(1 vs. 8);Cost of DBA time (patch 1 vs. 8);Cost of real estate and other
- 14. Extras bonus from Enterprise version: Data compression; Resource governor;Table partitioning; Hot-add CPU and memory;Policy-based management;Data collector; etc.
- 15. Total workload throughput on the system versus total number of databases.http://www.dell.com/downloads/global/solutions/ServerConsolidation1.doc
- 16. Workload throughput on each database versus the number of databases on the systemhttp://www.dell.com/downloads/global/solutions/ServerConsolidation1.doc
- 17. Effective memory for procedure cache in different configurations http://www.dell.com/downloads/global/solutions/ServerConsolidation1.doc
- 18. Increase resource utilization:Ability to re-distribute CPUs and memory between instances;Parallel processing (especially beneficial in non-business hours);Now you look GREAT!Or may be not
- 21. Multi-instancing vs Virtualization* http://msdn.microsoft.com/en-us/library/cc768536(BTS.10).aspx
- 22. How: Install multiple instances;Create multiple TempDBs;Limit CPUs and memory per instance;Leave enough memory for OS;Monitor performance;Test performance before move to production; Know your IO system; Set up thresholds;
- 25. What is useful: Microsoft Performance Dashboard; Quest Foglight software;Good DBA;What is not that much: Single Instance Reports; Profiler;Sysadmins.
- 26. Usefulness:
- 27. And NOT:
- 28. But can be better:
- 29. Steady but needs a lot of patience from DBA;Business has to follow rules;Adds extra work to manage and keep records on DBs;Harder tune performance;Higher cost of error (including planning).How it works :
- 30. How:SQL Server Engines for users are separated on different instances; SSAS and SSRS are separated from database engines;Each instance is used by databases of one business unit;Application has no elevated rights on any shared server; Have a big boss on your side!
- 31. Push back from development team on:CPU utilization;IO utilization (IOPS);Database schema optimization;Query tuning;What to expect:
- 32. Push back from business:DBA has to be involved;One instance down – all business units might be down;IT cost saving <> business cost;Is there a shortcut?;What to expect:
- 33. Unexpected errors; A lot of work to build monitoring and administration tools; Fun, fun, a lot of fun What to expect:
- 34. Bigger the farm – better savings;Bigger the farm – bigger the headache;Not that scary if design and implementation has been done carefully.Summary:
- 35. Internet – find your way, do it yourselfMicrosoft –excellent documentation, big community. For example:http://msdn.microsoft.com/en-us/library/ee819082.aspx Hardware Manufactures –hard to find the truth Consultants –result may be varyWhere to look for more:
- 36. Slides can be found on:http://indiana.sqlpass.org/Default.aspx?tabid=2742Email: a_prusakov@yahoo.comQuestions & Open DiscussionThank You!