A SCSI controller, also called a host bus adapter (HBA), is a card or chip that allows a Small Computer System Interface (SCSI) storage device to communicate with the operating system across a SCSI bus.
By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
The actual implementation of a SCSI controller varies by manufacturer. SCSI controllers can reside in a hard drive's PCI slot or can be a chip built into the motherboard. When an end user sends a request, the operating system sends the SCSI command to the controller, which then sends it to the storage device.
Like all components on a SCSI bus, a SCSI controller is given a unique identifier.