SQL 2005 : 9.00.1399.06
SQL 2005 SP1 : 9.00.2047.00
SQL 2005 SP2 : 9.00.3043.00
SQL 2005 SP3 : 9.00.4035.00
SQL 2008 RTM : 10.0.1600.22
SQL 2008 SP1 : 10.00.2531.00
Summary: This article provides a guide for physical storage design and gives recommendations and trade-offs for physical hardware design and file architecture.
It's here :
http://download.microsoft.com/download/4/f/8/4f8f2dc9-a9a7-4b68-98cb-163482c95e0b/PhysDBStor.doc