Single Ended And Differential Scsi Buses; Maximum Cable Length For Scsi Standards - Gateway ADAC Ultra2 S466 Hardware Manual

Single Ended and Differential SCSI Buses

Maximum Cable Length for SCSI Standards

Standard
SCSI I
Fast SCSI
Fast Wide SCSI
Ultra SCSI
Ultra SCSI
Wide Ultra SCSI
Wide Ultra SCSI
Wide Ultra SCSI
Ultra 2 SCSI
Ultra 2 SCSI
Wide Ultra 2 SCSI
Wide Ultra 2 SCSI
SCSI Bus Widths and Maximum Throughput
SCSI Standard
SCSI I
Fast SCSI
Fast Wide SCSI
Ultra SCSI
Wide Ultra SCSI
Ultra 2 SCSI
Wide Ultra 2 SCSI
2 ADAC Ultra2 S466 Hardware Guide
The SCSI standard defines two electrical buses:
a single ended bus and
low-voltage differential bus.
Single ended
6 m
6 m
6 m
1.5 m
3 m
1.5 m
3 m
SCSI Bus Width
LVD
12 m
12 m
12 m
12 m
12 m
12 m
12 m
12 m
25 m
12 m
25 m
12 m
8 bits
8 bits
16 bits
8 bits
16 bits
8 bits
16 bits
Maximum Number
of Drives
7
7
15
7
3
15
7
3
1
7
1
15
SCSI Throughput
5 MB/s
10 MB/s
20 MB/s
20 MB/s
40 MB/s
40 MB/s
80 MB/s