Admin Advanced Data Recovery And Troubleshooting With Sql Server 2008

This document summarizes a presentation on SQL Server storage internals, enhancements in SQL Server 2005/2008, and data recovery scenarios and troubleshooting techniques. The presentation covers topics such as database and file states, system databases, allocation structures, checksums, fast recovery, deferred transactions, read-only compressed databases, backup and restore enhancements, and DBCC checkdb enhancements. It also discusses scenarios for recovering system databases, inaccessible user databases, backup/restore failures, and database consistency errors, and provides techniques for troubleshooting each scenario. The summary emphasizes that SQL Server 2005 greatly enhances data recovery capabilities through features like checksum and improvements that reduce issues from deferred transactions and read retries, though backups remain essential.