BitLocker encryption is a security feature included with all supported versions of Microsoft® Windows and Windows Server. It protects the confidentiality of data at rest by transparently encrypting disk volumes, and is compatible with Security Center.
BitLocker encryption has a performance impact. The extent of the overhead depends on your setup, but BitLocker is generally predicted to have a single-digit percentage impact. For more information, see BitLocker frequently asked questions (FAQ).
For instructions on how to deploy BitLocker in a Windows Server environment, see BitLocker: How to deploy on Windows Server 2012 and later.
For instructions on how to deploy BitLocker in a Windows environment, see BitLocker basic deployment.