3. CONFIGURING YOUR SCSI CARD
DC-395 Series User’s Manual
20
20
Note
:
Enabling this feature would reduce the load on your computer's power supply by
allowing the DC-395 to turn on SCSI devices one at a time during system
initialization, starting from the lowest SCSI ID. However, each device would be
required to support this option.
Tagged Command Queuing:
Yes/No (default). The Yes option is useful for enhancing
overall system performance under multi-tasking operating systems such as OS/2, Windows
NT and Unix.
Wide Negotiation:
Yes/No. This option is ignored when the DC-395U, a non-Wide SCSI
adapter, is installed. It is suggested that you enable this option, i.e., Yes, for 16-bit Wide
SCSI devices in order to gain the best performance and that you disable it for 8-bit devices
for less compatibility problems.
Synchronous Negotiation:
Yes/No. Yes (default) is for Active Synchronous Negotiation. In
this mode the DC-395 series adapter will initiate SCSI synchronous negotiation when the
system boots up. NO, Asynchronous Negotiation mode, is normally at a lower rate and not
related to timing.
MAX Sync Xfer Rate :
20.0 - 40.0 MB/sec. . The DC-395’s will negotiate an optimum
speed depending on the transfer rate of each device under the chosen option.
MAX Sync Xfers (for DC-395U/395UW):
Model #
SCSI
width
Byte/Xfer
Max Sync Xfer
(MXfer/sec)
DC-395U
8-bit
1
20
DC-395UW
16-bit
2
40
Included In BIOS Scan:
Yes (default)/No. When set to
Yes
, the DC-395’s BIOS will scan
and display the device’s information during system bootup. HDD scanned by the BIOS will
be controlled by BIOS INT 13H (See More Than 2 Drives Support). When set to
No
, the DC-
395’s will not scan the device and device drivers will be needed to control it.
You may set this option to
No
for SCSI ID(s) without device(s) connected to speed up the
device scanning during boot. But, beware that any connected device will not be scanned and
recognized by the BIOS when this option is set to No.
So, if any connected devices are not
presented in DC-395’s BIOS display message during bootup, check this option first.