One can configure Sql Server 2008 to run in FIPS 140-2 compliant mode, in the same manner as running Bitlocker in FIPS 140-2 compliant mode. Which is to activate FIPS 140-2 compliant mode in the Local Group Policy Editor dialog.
From Instructions for using SQL Server 2008 in FIPS 140-2-compliant mode:
...you must run SQL Server 2008 on an operating system that uses a FIPS 140-2-validated Cryptographic Service Provider or that provides a cryptographic module that has been validated.
What 'Cryptographic module' does SQL Server 2008 use by default when FIPS 140-2 compliance mode is activated in the group policy editor on a Windows Server 2008 machine?