PostgreSQL has the option to turn off fsync and synchronous commits (http://www.postgresql.org/docs/9.1/static/runtime-config-wal.html). Does SQL Server has this option somewhere?
migrated from serverfault.com Jun 27 at 5:13
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No, Sql server doesn't let you turn off synchronous writes to the log file. If you were able to do so, then you would lose ACID compliance.
If this is a "make it go as fast as possible" scenario, then a better approach is to analyze wait statistics to identify what the bottleneck actually is. Risking data corruption is never a good idea.