LSI S14037 - Manual (Page 17)

Connecting Internal SCSI Devices 1-9
1.2.3 SCSI Bus Termination
All SCSI devices have a set of resistors called terminators to assure
reliable operation of the SCSI bus. The first and last physical devices on
the SCSI bus must have these terminators enabled; all other SCSI
devices on the bus must have their terminators removed or disabled.
Termination on the SYM20810 host adapter is automatically enabled
when it is connected to the end of the bus. Refer to the SCSI device
documentation for information on how to identify and change the
terminator setting on each SCSI peripheral device.