A Little About SCSI
Originally written by
- SCSI defines a BUS-based protocol - you connect several devices to a
BUS, give a unique ID to each device, and allow them to communicate.
- On the server (host) you install an HBA (Host-BUS Adapter) to communicate
with the SCSI BUS.
- A SCSI address is composed of 4 numbers:
- Host number (the number of the SCSI HBA on the host)
- Port (or channel) - in case an HBA has more then one SCSI port
- Target ID (identifies a storage controller)
- LUN (Logical Unit Number) - identifies a single SCSI disk/tape/whatever
in a given target.