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CIFS is OUT:The CIFS implementation of SMB is rarely used these days. Most modern storage systems no longer use CIFS, they use SMB 2 or SMB 3. In the Windows world, SMB 2 has been the standard as of Windows Vista (2006) and SMB 3 is part of Windows 8 and Windows Server 2012. Like CIFS, Samba implements the SMB protocol which is what allows Windows clients to transparently access Linux directories. Samba allows for a Linux server to act as a Domain Controller. By doing so, user credentials on the Windows domain can be used instead of needing to be recreated and then manually kept in sync on the Linux server.