SSHD may refer to any of the following:
1.A daemon that implements the Secure Shell protocol, sshd acts as a server; providing encrypted communication between two hosts and is typically used in conjunction with the client software ssh. The sshd starts when the system boots, then listens for connections. It forks a new daemon for each established connection and the daemon handles the exchange of keys, encryption, authentication, command execution, and data exchange.
2. SSHD may also refer to a Solid State Hybrid Drive.