Predeployment I/O Best Practices
http://technet.microsoft.com/en-us/library/cc966412.aspx
Storage Top 10 Best Practices
http://technet.microsoft.com/en-us/library/cc966534.aspx
Physical Database Storage Design
http://technet.microsoft.com/en-us/library/cc966414.aspx
SQL Server 2000 I/O Basics
http://technet.microsoft.com/en-us/library/cc966500.aspx
SQL Server I/O Basics, Chapter 2
http://technet.microsoft.com/en-us/library/cc917726.aspx
Top SQL Server 2005 Performance Issues for OLTP Applications
http://technet.microsoft.com/en-us/library/cc966401.aspx
Troubleshooting Performance Problems in SQL Server 2005
http://technet.microsoft.com/en-us/library/cc966540.aspx
Top 10 Hidden Gems in SQL Server 2005
http://technet.microsoft.com/en-us/library/cc917696.aspx
SQLIO Tool
http://www.microsoft.com/downloads/details.aspx?familyid=9a8b005b-84e4-4f24-8d65-cb53442d9e19&displaylang=en
SQLIOSim
http://support.microsoft.com/kb/231619
SQL Server Health and History Tools
http://www.microsoft.com/downloads/details.aspx?familyid=EEDD10D6-75F7-4763-86DE-D2347B8B5F89&displaylang=en
http://www.microsoft.com/downloads/details.aspx?familyid=64983AF0-7902-427E-9B41-7C2E8FDCC140&displaylang=en
http://www.microsoft.com/downloads/details.aspx?familyid=A4B837C7-A1FA-4F25-840B-FEF15E917F18&displaylang=en
SQL Server 2005 Best Practices Analyzer
http://www.microsoft.com/downloads/details.aspx?familyid=DA0531E4-E94C-4991-82FA-F0E3FBD05E63&displaylang=en
RML Utilities for SQL Server (x86)
http://www.microsoft.com/downloads/details.aspx?familyid=7EDFA95A-A32F-440F-A3A8-5160C8DBE926&displaylang=en
Disk Offset Calculations
http://support.microsoft.com/default.aspx?scid=kb;EN-US;929491
Diskpart
http://technet.microsoft.com/en-us/library/cc773140(WS.10).aspx
Storport in Windows 2003
http://www.microsoft.com/windowsserversystem/wss2003/techinfo/plandeploy/storportwp.mspx
Performance Dashboard
http://www.microsoft.com/downloads/details.aspx?familyid=1d3a4a0d-7e0c-4730-8204-e419218c1efc&displaylang=en