SMB 3.0 is a network file sharing protocol introduced by Microsoft in 2012 as part of the Windows 8 and Windows Server 2012 operating systems. It enhances the previous versions of the Server Message Block protocol by providing improved performance, security, and reliability for file sharing and printer services over a network. One of the key features of SMB 3.0 is its support for multichannel, which allows multiple connections to be established simultaneously, increasing throughput. Additionally, it includes encryption capabilities to protect data during transmission, making it a more secure option for businesses and organizations that rely on networked resources.