Barracuda 18LP Installation Guide, Rev. B
25
[1] For environments where all elements of the bus (cables, device inter-
faces, environmental noise and other parameters) are controlled to
be better than minimally required, it may be possible to extend the
path length and device count.
[2] SCSI devices shall be within a stub length of the termination (.1
meter).
[3] Values specified by data rate shall apply even if a slower data rate is
negotiated.
[4] Loads spaced at least 8 inches (20.3 cm) apart (refer to SCSI EPI
T10/1143D specification).
Table 4b.
Cable characteristics for differential I/O circuits
Interconnect
Maximum distance between
terminators (meters) [1] [3]
Fast-5 Fast-10 Fast-20 Fast-40
Point-to-point interconnect
(2 devices)
25
25
25
25 [2]
Daisy-chain interconnect
(up to 16 devices) [4]
15
15
15
12
