Very large data warehouse disk storage architecture issues

As part of my research about performance tuning, I've been trying to find some hardware configuration guidelines for data warehousing. So far I've found only a few worthwhile articles. A very high-level summary is provided in the article Very large data warehouse disk storage architecture issues written by the authors of Clickstream Data Warehousing. As expected, I've found that some of the best material comes from the RDBMS vendors. Oracle provides good info in Hardware and I/O Considerations in Data Warehouses. I'll look some more in the DB2, Teradata, and SQL Server sites.