A – Fast!UTIL
Configuration Settings
DC8151101-00 C
A-5
■
Negotiate Synchronous. When set to Yes, the QLA12160 board negotiates
synchronous data transfers with the device. When set to No, the QLA12160
board uses only asynchronous data transfers. The default is Yes.
■
Tagged Queuing. When set to Yes, the device queues multiple commands.
When set to No, multiple queues are not supported. The default is Yes.
■
Sync Offset. This setting specifies the maximum number of requests (REQ)
that can be sent during a synchronous data transfer before an acknowledge
(ACK) is received. Valid values for this field are 00, 02, 04, 06, 08, 10, 12,
14, 16, 18, 20, 22, and 24. The default is 24.
■
Sync Period. This setting specifies the minimum REQ/ACK period, in 4-ns
increments, for a synchronous data transfer. Valid values for this field are 9
(160 MBps, Ultra3), 10 (80 MBps, LVD), 12 (40 MBps, Ultra), 25 (20 MBps,
fast), and 40 (12.5 MBps). The default is 9.
■
Exec Throttle. This setting specifies the maximum number of commands
executing on any one port. When a port’s execution throttle is reached, no
new commands are executed until the current command finishes. Valid
values for this field are 1, 4, 8, 16, 32, 64, 128, and 255. The default is 16.
A.2.3
SCSI Bus Settings
The options and defaults for SCSI bus settings are listed in
table A-3
and described
in the following paragraphs.
■
Host adapter SCSI ID. This setting defines the SCSI ID of the QLA12160
board. The default is 7.
■
SCSI bus reset. When this setting is Enabled, the SCSI bus is reset at
system power up. Disable this setting to prevent unwanted SCSI bus resets
when you have two or more host adapter boards on the SCSI bus. The
default is Enabled.
■
SCSI bus reset delay. After resetting the SCSI bus, the firmware does not
initiate any SCSI activity for the number of seconds specified in this setting.
The default is 5 seconds.
Table A-3. SCSI Bus Settings
Setting
Options
Default
Host adapter SCSI ID
Enabled, Disabled
Enabled
SCSI bus reset
Enabled, Disabled
Enabled
SCSI bus reset delay
0–15 seconds
5 seconds
SCSI Termination
Auto, Enabled, Disabled,
High Only
Auto
