Avago Technologies AcceleRAID 170LP - Manual (Page 39)

Installation
Manual No. DB11-000024-00 2-19
Limitations on Mixing SCSI Drives
Narrow with Wide SCSI Drives
If you mix narrow and wide SCSI devices on the controller, use a converter
that does not terminate the upper eight bits, and be sure to properly terminate
the end of the bus with either a 16-bit terminator or a 16-bit device that has
termination enabled.
LVD with Single-ended Drives
If LVD capable drives are installed on a channel with single-ended devices,
all drives on the channel will operate as if they were single-ended devices.
This will also limit the bus length to the single-ended bus length specified in
Table 2-4.