Installation manual

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Quick Arbitrate & Select (Ultra320 only)
Choices: disabled, enabled
Default: enabled
Reduces the time required to gain control of the SCSI bus
if all target settings are set to Sync DT-IU and all devices
on the bus support QAS.
Reset Bus on Startup
Choices: Yes, No
Default: Yes
If enabled, the SCSI bus is reset upon adapter
initialization. If disabled, the SCSI bus is still scanned for
devices, but the bus is not reset.
SCSI Termination
Choices: Automatic, High
Default: Automatic
Set to Automatic unless there is narrow SCSI cable
connected to either the internal or external connector.
Selection Timeout
Choices: 1ms-1 sec
Default: 250ms
Specifies the amount of time a device has to respond to
being selected. Lower the setting to speed up the boot
process. If the value is lower than the recommended 250
ms, it may be too fast for some devices to respond.
SCSI device settings
Select SCSI Device Settings and press Enter to
display parameters for each SCSI Target ID. Set
individual configuration parameters for each possible
SCSI target for the current adapter from the
SCSI
Target Parameter
page. The dialogue box displays a
table with 16 rows, each representing a specific target ID
for the SCSI bus attached to the selected channel.
SCSI device settings
The SCSI Device Settings menu displays the
parameters which are managed for the specific
adapter. The parameters available vary by SCSI family
and the specific adapter within a family.
Enable Disconnect
Choices: Yes, No
Default: Yes
Yes allows the device to disconnect from the SCSI bus
during SCSI command processing. The device
determines when it disconnects. This setting does not
force the device to disconnect.
Enable LUNs
Choices: Checked, Unchecked
Default: Checked
Indicates if the associated LUN scanned by ATTO drivers.
Each available LUN has a check box; the default has a
check in each LUN check box. Remove the check mark
to leave a LUN undetected. Changes may be discarded
and replaced with factory default settings by choosing
Reset to Defaults.
Enable LUNs
Choices: Disable ID, 0, 0-7, 0-63
Default: 0-7
Specifies the number of Logical Unit Numbers (LUNs) the
driver addresses when scanning for devices. The number
of LUNs to scan is determined as follows:
Disable ID : Target ID is bypassed and not scanned
0: Scan LUN 0 for this target ID
0-7: Scan LUNs 0 to 7 for this target ID
0-63: Scan LUNs 0 to 63 for this target ID
Enable Synchronous SCSI
Choices: Async, Sync ST, Sync DT, Sync DT-IU
Default: Variable by adapter type
Specifies whether the selected target transfers data at
synchronous transfer rates or at the asynchronous rate.
The maximum synchronous rate to negotiate is specified
in the
Sync Rate parameter.
Enable Wide SCSI
Choices: Yes, No
Default: Yes
If enabled, the ExpressPCI adapter tries to transfer SCSI
data in a Wide mode to all devices to aid compatibility with
older, narrow devices which do not respond to Wide
transfer negotiation. If the synchronous SCSI parameter
is set to
Sync DT or Sync DT-IU , only WIDE
negotiation is permitted.