Software: Microsoft BitLocker Drive Encryption; SMB encryption
Software: Microsoft Bitlocker provides software encryption on standalone and cluster based NTFS or ReFS(v2) volumes. Cluster volumes (CSV) encryption support was added in Windows 2012 Server.
Microsoft BitLocker uses the Advanced Encryption Standard (AES) encryption algorithm with either 128-bit or 256-bit keys. It is generally recommended to use 256-bit keys because of their superior strength.