LSI SYM22801 - Manual (Page 32)

2-18 Installing the SYM22801 Host Adapter
Figure 2.13 Multiple External SCSI Devices Chained Together
2.3 SCSI Bus Termination
The devices making up the SCSI bus are connected serially (chained
together) with SCSI cables. The first and last physical SCSI devices
connected on the ends of the SCSI bus must have a set of resistors
called terminators. All other SCSI devices on the bus must have their
terminators removed or disabled.
Remember: The SYM22801 host adapter is also on the SCSI bus; its
termination is automatically enabled when it is connected to
the end of the bus.