User`s guide

3-42 Micron Electronics, Inc.
Micron NetFRAME LV2000 Server System User’s Guide
Initiate Sync Negotiation—when enabled (set to Yes), the host adapter initiates
synchronous negotiation with the SCSI device; when No, the adapter does not
initiate synchronous negotiation. Normally you should leave this set to Yes,
because the SCSI adapter and its attached devices can transfer data faster in
synchronous mode than in asynchronous. If a device does not support
synchronous negotiation, the adapter will automatically transfer data
asynchronously. If the device initiates synchronous negotiation, the host
adapter always responds accordingly.
Maximum Sync Transfer Rate—the setting determines the maximum
synchronous data transfer rate that the adapter will negotiate with the device.
If you have disabled (set to No) the Initiate Sync Negotiation option, the
maximum sync rate you select is the rate at which the adapter accepts data
from the device; there is no negotiation.
Enable Disconnection—when set to Yes, the adapter allows a SCSI device to
temporarily disconnect from the bus, and the adapter can continue to do other
bus operations. When no, the adapter does not allow a SCSI device to
disconnect.
• Leave this set to Yes if there are two or more SCSI devices on the
bus
• Change to No if there is only one SCSI device connected to the
bus (besides the adapter).
Initiate Wide Negotiation—when set to Yes, the adapter initiates wide
negotiation with each 16-bit SCSI device. You can leave this set to Yes even if
there are 8-bit devices connected; the adapter will not attempt wide negotiation
with 8-bit devices.
Send Start Unit Command—this option reduces the load on the system power
supply by allowing the host adapter to power-up SCSI devices one at a time at
boot time.
• Yes is required for SCSI hard drives; the adapter sends the Start
Unit Command to each SCSI device individually to power-up.
• When set to No, all SCSI devices power up at the same time. If a
device has been jumpered to wait for a start command, it will
not start.
If you enable the command for more than one device, the adapter sends the
command first to the boot device specified in the Boot Device Options menu.
After the first device responds, the adapter sends the command to the remaining
SCSI devices, beginning with the lowest SCSI ID.