Plasmon LF 8600 User Manual

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PLASMON  L M S  -  LF 8600  USER MANUAL
Page 46
SCSI BUS CONSIDERATIONS
The length of the SCSI interface cables used to interconnect the LF 8600 with other SCSI devices is
dictated by the type of SCSI controller installed in each LF 8600.  A maximum of seven LF 8600's can be
connected to a host computer in a daisy chained configuration using the appropriate SCSI controller and
cable options.
When the single-ended interface controller is used on all SCSI devices, the total length of the SCSI
interface cable cannot exceed 6 m (19.5 ft). (Plasmon LMS does not recommend single-ended fast
synchronous.)  When a differential interface controller is used on all SCSI devices, the total SCSI interface
cable length cannot exceed 25 m (82 ft).
NOTE
The internal SCSI cable for each LF 8600 is approximately 22.86 cm
(9.0 in.). This distance must be considered as part of the total SCSI
cable length.
The SCSI interface cabling used to interconnect an LF 8600 to a host can be daisy chained between SCSI
devices as illustrated below. One interface cable is required to interface each pair of SCSI devices.
 Figure 25. Host-to-LF 8600 Daisy Chain Cable Connections
A terminator must be installed on the vacant connector of the last SCSI device in the SCSI bus chain. The
SCSI bus must be terminated externally on the LF 8600 rear panel when an LF 8600 is the last SCSI
device on the bus.
LD 8600
TERMINATOR
SCSI
CONNECTORS
LD 8600
SCSI
CONNECTORS
LD 8600
SCSI
CONNECTORS
NOTE:  The SCSI bus must also be
terminated at the host. Normally, the
termination function is built into the
host adapter.
HOST
HOST SCSI
CONNECTOR