Adaptec SBC-599 - Manual (Page 83)

Chapter 6 SCSI Setup and Configurations 73
nInitiate Sync Negotiation - This option determines whether the
host adapter initiates synchronous data transfer negotiation
(Sync Negotiation) between the device and host adapter. The
default setting is Yes.
Synchronous negotiation is a SCSI feature that allows the
host adapter and its attached SCSI devices to transfer data
in synchronous mode. Synchronous data transfer is faster
than asynchronous data transfer.
The host adapter always responds to Sync Negotiation if the
SCSI device initiates it. If neither the host adapter nor the
SCSI device initiate Sync Negotiation, data is transferred
asynchronously.
Normally, you should leave the Initiate Sync Negotiation
setting enabled, because most SCSI devices support
synchronous negotiation and it allows for faster data
transfer.
Note: Some older SCSI-1 devices do not support Sync
Negotiation. This may cause your computer to
operate erratically or hang if Initiate Sync Negotia-
tion is set to yes. Set Initiate Sync Negotiation to
No for these devices.
n
Initiate Wide Negotiation —This option determines
whether the host adapter attempts 16-bit data transfer (Wide
negotiation) instead of 8-bit data transfer. The default
setting is Yes.
Note: Some 8-bit SCSI devices may have trouble
handling Wide negotiation, which may result in
erratic behavior or a hang condition. For these
devices, set Initiate Wide Negotiation to No.