Configuring Expresspci Scsi Adapters; Safeguard Buttons; Configuration Utilities; Adapter Configurations - ATTO Technology R30F Installation And Operation Manual

9 Configuring ExpressPCI SCSI Adapters

ExpressRAID may be used to configure ATTO ExpressPCI adapters, however, entering invalid values
may cause your ExpressPCI adapter to function incorrectly. You may only configure SCSI busses labeled
ATTO Technology. To access the configuration options for the ATTO ExpressPCI host adapter, double-
click the appropriate bus or click the information button next to it.
WARNING You do not need to change options for ATTO
ExpressPCI host adapters in ATTO ExpressRAID.
Entering invalid values may cause your ExpressPCI
adapter to function incorrectly. Back up system data when
changing or installing hardware.
Access the utilities you wish to use by clicking on
drives or devices in the device window or by clicking
the information button next to the device or drive.

Safeguard buttons

Safeguard buttons save your work or revert settings to
previously saved versions. You must select a safeguard
button if you make changes to the ExpressPCI adapter
configuration.
Defaults: Reverts the current ExpressPCI adapter
configuration options to default settings.
Cancel: Cancels edits and returns to the ExpressRAID
main window.
OK: Accepts edits and returns to ExpressRAID main
window. Changes made are saved to the Flash ROM of
your ExpressPCI adapter when quitting ExpressRAID.
Restart computer for changes to take effect.

Configuration utilities

ExpressRAID graphically displays all SCSI Manager
4.3 compatible busses found on your computer. While
using the ATTO ExpressRAID, you are able to view
information on all busses and devices attached to your
computer.
You may change a variety of settings for the SCSI bus
by accessing the Channel menu. SCSI busses are
identified on the ExpressRAID device window in bold
type. You may only configure SCSI busses labeled
ATTO Technology.
To access the configuration options for the ExpressPCI
adapter, double-click the SCSI bus or click the
information button next to it.

Adapter configurations

Do not configure these features unless you have a
thorough understanding of how they function or are
17 ATTO Technology ExpressRAID for Macintosh
advised to change them by an ATTO Technology
Technical Support representative.
Controller ID
Choices: 0-15
Default: 7
ExpressPCI adapters are set to SCSI ID 7 because ID
7 has the highest priority on the bus.
WARNING Do not change this setting unless advised by
an ATTO Technical Support representative. Multiple
devices on the same SCSI bus with the same controller
ID may cause data corruption or may cause your system
to stop responding.
Termination
Choices: Automatic, High (UItra320)
Choices: Automatic, High, None (Ultra 3,
Ultra/WIDE)
Default: Automatic
ExpressPCI differential cards do not use this option.
This setting can be used with the ExpressPCI-PSC to
override its automatic termination setting. If you are
using both internal and external SCSI busses, you must
enable termination. Refer to the chart below to
determine the proper setting for your device
configuration.
Wide Devices refer to 16-bit Ultra/Wide SCSI or 16-
bit Fast/Wide SCSI.
Narrow Devices refer to 8-bit Fast UltraSCSI, 8-bit
Fast SCSI-2, or 8-bit SCSI-1.
Exhibit 9.-1 Termination Selection Chart
Internal External
Connection Connection
Narrow Device Wide Device
Wide Device Narrow Device
Narrow Device Narrow Device
If you use a combination of Wide and Narrow devices,
the Wide devices must be connected first followed by
the Narrow devices. This rule applies to both internal
and external channels. For more information, check
your devices' documentation.
Termination
Selection
High
High
High