Examples Of Computing Scsi Bus Lengths - Sun Microsystems 2.1 Gbyte 7200 rpm Installation Manual

2 gbyte standard connector disk drive
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B

Examples of Computing SCSI Bus Lengths

B-4
Table B-1 SCSI Internal Cable (Bus) Lengths
Devices and Cables
SPARCstation 5
SPARCstation 20
SPARCstation Voyager
SPARCserver 1000*
* Only for first system board. For any other system board, use 0.9
** Does not contain an on-board SCSI interface
If you have a SPARCstation 2 and two DDPs, add the following cable
lengths:
• 0.5 meters (for the internal circuitry of the SPARCstation 2)
• 1.6 meters (for two DDP cables, 0.80 m x 2)
• 0.6 meters (for the internal circuitry of two DDPs
0.3 m x 2)
The total length of cable for this configuration is 2.7 meters of cable, less
than the 6 meter maximum for each SCSI bus.
If you have a SPARCstation 10 and two DDPs, add the following cable
lengths:
• 0.9 meters (for the internal circuitry of the SPARCstation 10)
• 1.6 meters (for two DDP cables, 0.80 m x 2)
• 0.6 meters (for the internal circuitry of two DDPs
(0.3 m x 2)
The total length of cable for this configuration is 3.1 meters of cable, less
than the 6 meter maximum for each SCSI bus.
If you have a SPARCstation IPX, one DDP, and one Desktop Storage Module
with a disk drive, add the following cable lengths:
• 0.5 meters (for the SPARCstation IPX)
• 0.8 meters (for the DDP cable)
• 0.3 meters (for the internal circuitry of the DDP)
2 Gbyte Standard Connector Disk Drive Installation Manual—May 1995
SCSI CABLE LENGTH
Meters
1.6
62.6
1.6
62.6
0.4
15.7
1.8
70.2
Inches

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