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ARO-1130CA Installation and Hardware Guide
SCSI Device Configuration
The SCSI device settings allow you to configure certain parameters
for each device on the SCSI bus. To configure settings for a specific
device, you must know the SCSI ID assigned to that device. If you are
not sure of the SCSI ID, see Using the SCSI Disk Utilities on page 5-4.
Initiate Sync Negotiation—This option determines whether
synchronous data transfer negotiation (Sync Negotiation)
between the device and ARO-1130CA is initiated by the SCSI
channel controlled by the ARO-1130CA. Normally, you should
leave Initiate Sync Negotiation set to enabled, because most
SCSI devices support synchronous negotiation and because it
allows for faster data transfer. The default setting is Yes.
Maximum Transfer Rate—This option determines the maxi-
mum data transfer rate that the SCSI channel controlled by the
ARO-1130CA supports. The default setting is 20.0 MBytes/sec
(10 MBytes/sec for motherboards that do not support Wide
SCSI). (The effective data transfer rate is doubled when Initiate
Wide Negotiation is set to Yes. For example, a transfer rate of
20 MBytes/sec becomes 40 MBytes/sec.)
Enable Disconnection—This option determines whether the
SCSI channel controlled by the ARO-1130CA allows the SCSI
device to disconnect from the SCSI bus (sometimes called
Disconnect/Reconnect). The default setting is Yes.
You should leave Enable Disconnection set to Yes if two or
more SCSI devices are supported by the ARO-1130CA. If only
one SCSI device is supported by the ARO-1130CA, you can set
Enable Disconnection to No to achieve slightly better perfor-
mance.
Initiate Wide Negotiation—This option determines whether
the SCSI channel controlled by the ARO-1130CA attempts
16-bit data transfer instead of 8-bit data transfer. The default
setting is Yes. (The effective data transfer rate is doubled when
16-bit data transfer is used. For example, a transfer rate of
10 MBytes/sec becomes 20 MBytes/sec.)
5-6
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