Adaptec AHA-2742T User Manual - Page 67

supports rates up to the Fast SCSI maximum of 10 MBytes/second.

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AHA-2740 Series User's Manual Initiate Sync Negotiation This option determines whether or not the host adapter will initiate synchronous negotiation with the SCSI device. When set to yes, the host adapter will initiate synchronous negotiation with the SCSI device. When set to no, the host adapter will not initiate synchronous negotiation with the SCSI device. The host adapter, however, will always respond to synchronous negotiation initiated from the SCSI device. The default setting is yes. If neither the host adapter nor the SCSI peripheral negotiate for synchronous data transfers, all data transfers will be asynchronous. Note Some older SCSI-1 devices may have trouble handling synchronous negotiation, which may result in erratic behavior or a hang condition. For these devices, set Initiate Sync Negotiation to no. Maximum Synch Xfer Rate This option determines the maximum synchronous transfer rate (MBytes/sec), that the host adapter will support. The host adapter supports rates up to the Fast SCSI maximum of 10 MBytes/second. The default value is 10.0 MBytes/sec. Valid values are: • 10.0 MBytes/sec • 8.0 MBytes/sec • 6.67 MBytes/sec • 5.7 MBytes/sec • 5.0 MBytes/sec • 4.4 MBytes/sec • 4.0 MBytes/sec • 3.6 MBytes/sec 3-16 Adaptec AHA-2740 Series User's Manual Stock Number: 510381-00 / Rev. C (Page 3-16) Print Spec Number: 491709-00 Rev C Current Date: 9/1/93 ECN Date: 9/14/93

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Initiate Sync Negotiation
This option determines whether or not the host adapter will
initiate synchronous negotiation with the SCSI device.
When set to
yes
, the host adapter will initiate synchronous negoti-
ation with the SCSI device. When set to
no,
the host adapter will
not initiate synchronous negotiation with the SCSI device. The
host adapter, however, will always respond to synchronous negoti-
ation initiated from the SCSI device. The default setting is
yes
.
If neither the host adapter nor the SCSI peripheral negotiate for
synchronous data transfers, all data transfers will be asynchronous.
Note
Some older SCSI-1 devices may have trouble handling synchro-
nous negotiation, which may result in erratic behavior or a
hang condition. For these devices, set Initiate Sync Negotiation
to
no
.
Maximum Synch Xfer Rate
This option determines the maximum synchronous transfer rate
(MBytes/sec), that the host adapter will support. The host adapter
supports rates up to the Fast SCSI maximum of 10 MBytes/second.
The default value is
10.0 MBytes/sec
. Valid values are:
•
10.0 MBytes/sec
•
8.0 MBytes/sec
•
6.67 MBytes/sec
•
5.7 MBytes/sec
•
5.0 MBytes/sec
•
4.4 MBytes/sec
•
4.0 MBytes/sec
•
3.6 MBytes/sec
Adaptec AHA-2740 Series User’s Manual
Stock Number:
510381-00
/
Rev. C
(Page 3-16)
Print Spec Number:
491709-00 Rev C
Current Date:
9/1/93
ECN Date:
9/14/93
AHA-2740 Series User’s Manual
3-16