Maximum Cable Lengths - Adaptec 2940U2W User Manual

Maximum Cable Lengths

The total length of cabling (internal and external) on the SCSI bus
may not exceed the maximum lengths listed in Table 5.
Table 5. Maximum Cable Lengths
Maximum
Cable Length
12 m (29.4 ft)
3 m (9.8 ft)
3 m (9.8 ft)
3 m (9.8 ft)
1.5 m (4.9 ft)
1
Mixing Fast/Ultra peripherals with Ultra2 peripherals causes the entire SCSI bus to
default to Ultra SCSI speeds and cable requirements.
2
Ultra SCSI data transfer rates do not currently support more than eight devices.
Obtaining SCSI Cables and Adapters
Data Transfer Rate
1
Ultra2 (80 MBytes/sec)
Fast SCSI
(10 MBytes/sec)
Wide SCSI
(20 MBytes/sec)
Ultra SCSI
(40 MBytes/sec for 16-bit,
20 MBytes/sec for 8-bit)
Ultra SCSI
(40 MBytes/sec for 16-bit,
20 MBytes/sec for 8-bit)
Maximum
Peripherals
Supported
15
7
15
4
2
5-8
27