Adaptec 2940U2W Instruction Manual download pdf (Page 33)

Obtaining SCSI Cables and Adapters

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.

❒

Mixing Fast/Ultra peripherals with Ultra2 peripherals causes the entire SCSI bus to

default to Ultra SCSI speeds and cable requirements.

Ultra SCSI data transfer rates do not currently support more than eight devices.

Table 5. Maximum Cable Lengths

Maximum

Cable Length Data Transfer Rate

Maximum

Peripherals

Supported

12 m (29.4 ft) Ultra2 (80 MBytes/sec)

3 m (9.8 ft) Fast SCSI

(10 MBytes/sec)

3 m (9.8 ft) Wide SCSI

(20 MBytes/sec)

3 m (9.8 ft) Ultra SCSI

(40 MBytes/sec for 16-bit,

20 MBytes/sec for 8-bit)

1.5 m (4.9 ft) Ultra SCSI

(40 MBytes/sec for 16-bit,

20 MBytes/sec for 8-bit)

5-8

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Adaptec 2940U2W Instruction Manual Page 33