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77 Chapter 7
• Initiate Wide Negotiation-(Default: Yes) When set to Yes, the SCSI
card attempts 16-bit data transfer (wide negotiation.) When set to No,
the SCSI card uses 8-bit data transfer unless the SCSI device requests
wide negotiation.
• Enable Disconnection-(Default: Yes) When set to Yes, allows the
SCSI device to disconnect from the SCSI bus. Leave the setting at
Yes if two or more SCSI device is connected, changing the setting to
No results in slightly better performance.
• Send Start Unit Command-(Default: Yes) When set to Yes, the Start
Unit Command is sent to the SCSI device at bootup.
The following three options have no effect if the SCSI Card BIOS is dis-
abled. (The SCSI Cards BIOS is normally enabled by default.)
• Enable Write Back Cache-(Default: N/C) Can be used to enable or
disable the write-back cache on SCSI disk drives connected to the host
adapter. Leave this option at its default setting of N/C (no change),
which usually allow for optimum drive performance.
• BIOS Multiple LUN Support-(Default: No) Leave this setting at No if
the device does not have multiple Logical Unit Numbers (LUNs.)
When set to Yes, the SCSI card BIOS provides boot support for a SCSI
device with multiple LUNs (for example, a CD jukebox. device in
which multiple CDs can be accessed simultaneously.)
• Include in BIOS Scan-(Default: Yes) When set to Yes, the SCSI card
BIOS includes the device as part of its BIOS scan at bootup.
Advanced Configuration Options
• Reset SCSI Bus at IC Initialization-(Default: Enabled) When set to
Enabled, the SCSI card generates a SCSI bus reset during its power-on
initialization and after a hard reset.
Note: Set Initiate Wide Negotiation to NO if you are
using an 8-bit SCSI device that hangs or exhib-
its other performance problems with 16-bit data
transfer rate enabled.
Note: Do not change the Advanced Configuration
Options unless absolutely necessary.