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1.5
Single-Ended and Differential SCSI Buses
1.6
Maximum Cable Length for SCSI Standards
The SCSI standard defines two electrical buses:
·
Single-ended bus
·
Low-voltage differential bus
Table 1.1
lists the maximum SCSI cable length and number of disk drives
that you can use, depending on the SCSI speeds and type of device.
Table 1.1
Maximum Cable Length for SCSI Standards
Standard
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
Ultra160 SCSI
Ultra160 SCSI
Wide Ultra160 SCSI
Wide Ultra160 SCSI
Ultra320
Ultra320
Single-Ended and Differential SCSI Buses
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
Single Ended
Low-Voltage
SCSI
Differential SCSI
1.5 m
3 m
1.5 m
3 m
Maximum # of
Drives
12 m
7
12 m
3
12 m
15
12 m
7
12 m
3
25 m
1
12 m
7
25 m
1
12 m
15
25 m
1
12 m
7
25 m
1
12 m
15
12 m
15
20 m
1
1-3
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