Table of Contents
Advertisement
ULTRA2 LVD SCSI HOST ADAPTER
Enable Disconnect: When this option (usually referred to as "disconnect/
reconnect") is set to "Yes" (the factory-default setting), devices can temporarily
disconnect from the SCSI bus to allow the Adapter to perform other functions on
the bus. The device and the Adapter can then reconnect when the bus is needed.
We strongly recommend that you not set this option to "No" unless the
corresponding device is an older one that cannot support disconnect/reconnect.
Enable Wide Negotiation: This option determines whether or not the Adapter
will start data-transfer negotiations with the corresponding device by requesting a
"wide SCSI" (16-bit) path. Set this option to "No" for any narrow-only device or for
any other attached device that doesn't seem to handle wide data transfer properly
(as is often the case with certain older CD-ROM, recordable CD, and tape drives).
The factory-default setting for this option is "Yes."
4.6.4 T
A
HE
DAPTER
If you select "Adapter Setup" at the Main Menu and press ENTER, the Utility displays
a screen at which you can set three key options for the Ultra2 LVD SCSI Host Adapter
itself. Use the up- and down-arrow keys to select an option, the plus and minus keys to
change its setting, or <F8> to reload the factory-default settings for all options.
Host Adapter SCSI ID: If necessary, you can use this option to change the
Adapter's ID number on the SCSI bus. The Adapter supports sixteen IDs
numbered 0 through 15. ID 7 (the Adapter's factory-default ID) has the highest
boot priority (is examined first during the boot process); from there, IDs are
examined in numeric order from 0 to 15. This means that if you have to change
the Adapter's ID, you should make it as low a number as possible.
You can have multiple SCSI host adapters attached to the same SCSI bus (see
Section 4.5); these must all have different SCSI IDs. But if you have multiple
Adapters that are each attached to separate SCSI buses, even if they're installed on
the same PCI bus, you don't have to use different SCSI IDs for the Adapters.
SCSI Terminator: You can use this option to have the Adapter auto-terminate
itself ("Automatic," the factory-default setting) or—if the Adapter doesn't seem to
autosense the bus state properly, or if for whatever reason you would rather set
termination yourself—set its termination always "ON" (if the Adapter is at the end
of the bus) or "OFF" (if the Adapter is in the middle of the bus), or set the
termination to the proper combination of "High bit ON"/"OFF" and "Low bit
ON"/"OFF" as described in Section 3.4.
34
S
M
ETUP
ENU
Advertisement
Table of Contents
