Installing Hardware Options
3–8 VAX 4000 Model 108 User Information
________________________ CAUTION __________________________
Failure to properly set up the SCSI termination may result in loss of data or
damage to the file system.
___________________________________________________________
SCSI Termination
VAX 4000 Model 108 Systems contain an embedded SCSI bus that is used to connect both
the internal and external drives. Both ends (and only at the ends) of the SCSI bus MUST
be terminated correctly. The controller end of the bus has embedded termination.
External SCSI Connector Termination
An external terminator is required when the SCSI port is not being used.
Internal SCSI Termination
The internal SCSI cable used for the VAX 4000 Model 108 Systems is a flat ribbon cable
with integrated on-board termination. Therefore, NO storage devices should have
termination enabled.
SCSI Bus Length
The total SCSI bus length, including internal cables and etch on the motherboard as well
as the external cables between the system and the storage enclosures must not exceed 6
meters (19.6 feet). The internal SCSI length is 1.2 meters (3.9 feet), leaving 4.8 meters
(16.2 feet) for external SCSI use.
Содержание VAX 4000 108
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