Digital Equipment HSZ40, Справочное руководство

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2–74 SET THIS_CONTROLLER and SET OTHER_CONTROLLER
TRANSFER_RATE_REQUESTED=ASYNCHRONOUS
TRANSFER_RATE_REQUESTED=DEFAULT (Default: 10MHz)
TRANSFER_RATE_REQUESTED=10MHZ
TRANSFER_RATE_REQUESTED=5MHZ
___________________________ Note ____________________________
Set the same transfer rate for both controllers in a dual-redundant configuration.
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Specifies the maximum data transfer rate that HSZ controllers use when communicating
with a SCSI host. You may need to limit the transfer rate to accommodate long cables
between the subsystem and the host system.
Table 2–4 lists the maximum transfer rates for different lengths of fast and slow SCSI
buses. These lengths represent cable lengths plus shelf-bus lengths.
Table 2–4 Maximum Data Transfer Rates for Different SCSI-Bus Cable
Lengths
Bus type Bus rate Data
transfer rate Meters Feet
8-bit, single ended 5 MHz 5 MB/Sec 6 19.68
8-bit, single ended 10 MHz 10 MB/Sec 3 9.84
16-bit, differential 10 MHz 20 MB/Sec 25 82.02
Examples
To change the other controller's CLI prompt:
CLI> SET OTHER_CONTROLLER PROMPT="CONTROLLER B"
To set this HSZ controller so it responds to requests for targets 2 and 5:
CLI> SET THIS_CONTROLLER ID=(2,5)
See also
SHOW THIS_CONTROLLER
SHOW OTHER_CONTROLLER