Definition – What does SCSI mean?
The Small Computer System Interface is the full name of SCSI and is a set of parallel interface standards developed so that external devices such as printers, mouse, keyboard, hard disks, scanner and others can easily attach to the computer.
Glossary Web explains SCSI
It has become a standard when we talk about connecting devices from one system to the other physically, and it deals with the compatibility and connectivity issues of all the ones mentioned above. It has taken over from the previous parallel data transfer interface, and many improvements exist in the system because of the flexibility it provides. It does not work well with all the devices but has compatibility with the critical operating systems where it also has the name of Skuzzy.
The best feature of SCSI is the fact that if a newer device is attached by the older system, it keeps the device working and if the old device is connected to a new connection, then it allows for the operation depending on the previous standards. They have become less common in modern computers where the USB has taken over but still stay active for hard drives.