1. Sunil Agarwal Senior Program Manager Email: sunila@microsoft.com Microsoft Corporation SESSION CODE: DAT309

4. Your mileage will vary. Page 4 Customer Data Compression Space SavingsNotes Bank Itau70%PAGE. Data Warehouse application. BWIN.com40%PAGE. OLTP Web application. NASDAQ62%PAGE. DW application. GE Healthcare38%, 21%PAGE, ROW. Manhattan Associates80%, 50%PAGE, ROW. First American Title52%PAGE. SAP ERP50%, 15%PAGE, ROW. MS Dynamics AX81%PAGE. ERP application. ServiceU35%PAGE.

5. CustomerPerformance impact Notes BWIN.com5%PAGE compression. OLTP Web application. Large volume of transactions. NASDAQ40%-60%PAGE compression. Large sequential range queries. DW Application. GE Healthcare-1%PAGE compression. 500 users, 1500 Transactions / sec. OLTP with some reporting queries. Manhattan Associates-11%PAGE compression. A lot of insert, update and delete activity. First American Title2% - 3%PAGE compression. OLTP Application. MS Dynamics AX3%PAGE compression. ERP application – small transactions.

6. TB-1 (16 GB) Compressed TB-1 (8GB) Compressed TB-1 (8GB) Empty Space (16 GB) TB-2 ( 4 GB) TB-2 ( 4 GB) Comp TB-2 2GB Empty Space (14 GB) Empty Space 4GB TB-1 (16 GB) Comp TB-2 (2 GB) Comp TB-2 (2 GB) TB-2 ( 4 GB) TB-2 ( 4 GB) Free Space ( 4 GB) Free Space ( 4 GB) Comp TB-1 4 GB Comp TB-1 4 GB Comp TB-1 4 GB Comp TB-1 4 GB Empty Space (16 GB) Empty Space (16 GB)

8. PAGEPAGE ROWROW R1R1 R2R2 R3R3 R4R4 R5R5 HeaderHeader CI structure HeaderHeader

12. TableTable IndexIndex PAGE Compressed IndexIndex Uncompressed TableTable IndexIndex

13. Jan-MarApr-JuneJuly-SeptOct-Dec PAGE Compressed Uncompressed ROW Compressed

14. Table Compression Strategies Table Size (GB) ROW save % PAGE save % 1-row Read >1-row ReadUpdateDeleteInsert % Scan% UpdatePlanNotes COSP39880%90%2,79758,735886,18715,747584,0173.80%57.27%ROWUpdates! GLPCA12315%89%0929,637016,8029,02092.46%0.0%PAGEScan mostly COEP18530%81%0 19,0read-mostly 362,927048,18227.14%4.17%ROW Light use, but stay low risk RESB24338%83%9,8377,977,629943,3801,32114,87789.16%10.54%ROW#updates ACCTIT21021%87%000054,5800.00%0.0%PAGEAppend only MSEG18328%87%3,441,91824,684,25228070,79787.54%0.0%PAGEScan mostly FAGLFLEXA9829%88%02980058,8820.50%0.0%PAGEAppend only BSIS14830%90%09,069675,77364,36611.44%0.08%PAGEAppend mostly COSB15084%92%088000100.00%0.00%ROWROW ~=PAGE GLFUNCA4015%89%06000100.00%0.00%PAGERead Only Inputs: sp_estimate_data_compression_savings, dm_db_physical_index_usage_stats, SAP knowledge Computed: S=% scans; U=% updates ROW ~= PAGE => ROW High Update, Low Scan => ROW High Scan => PAGE Append Only => PAGE Read-only => PAGE

18. Comparison of UNICODE compression with SCSU and UTF-8 LocaleSCSUUTF-8 English0.5 Japanese.851.0 Korean1.0 Turkish.52.53 German.5 Vietnamese0.610.68 Hindi0.51.0

20. HEADER 0x00530051004C005300450052005600450052 “SQLSERVER” 0x00530051004C0045004E00470049004E0045 “SQLENGINE” 0x00530051004C004C004F00410044004500520053 “SQLLOADERS” 0x53514C534552564552 “SQLSERVER” 0x53514C454E47494E45 “SQLENGINE” 0x53514C4C4F414445525310 “SQLLOADERS” 0x53514C “SQL” 0x03534552564552 “?SERVER” 0x 03454E47494E45 “?ENGINE” 0x034C4F414445525310 “?LOADERS” Col-prefix ROW COMPRESSIONPAGE COMPRESSION

23. ROW Compression Savings with UNICODE Compression ApplicationROW CompressionROW with UNICODE SAP ERP Benchmark DB9%43% Dynamics AX30%53.2% ****45%64% ****30%45% Savings on Hardware Cost CustomerProjected Storage Cost Reduction Microsoft ( MSIT/SAP)$500 K savings ****$500K

26. http://sqlcat.com/whitepapers/archive/2009/05/29/data-compression-strategy-capacity-planning-and-best- practices.aspx www.sqlcat.com http://blogs.msdn.com/sqlserverstorageengine http://blogs.msdn.com/sqlcat/ http://blogs.msdn.com/mssqlisv/ http://www.unisys.com/eprise/main/admin/corporate/doc/41371394.pdf http://search.hp.com/redirect.html?type=REG&qt=sql+server+data+compression&url=http%3A//h71028.www7.hp.com/ERC/downloads/4AA1-8766ENW.pdf%3Fjumpid%3Dreg_R1002_USEN&pos=1 http://www.netapp.com/us/library/technical-reports/tr-3719.html

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