Device Properties - TYAN Thunder i860 S2603 User Manual

Device Properties

The Device Properties screen provides viewing and updating individual device settings for an adapter.
Changing a setting for the host device (for example, SCSI ID 7) changes the setting for all devices. Below
are the fields available along with their descriptions.
Field
SCSI ID
Device Identifier
Sync Rate
Data Width
Scan ID
Scan LUNs > 0
Disconnect
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Thunder i860 S2603
Details on field
This field indicates the device's SCSI identifier.
This field indicates the ASCII device identitifer string
extracted from the device's Inquiry Data.
This field indicates the maximum synchronous data
transfer rate, in Mega Transfer per second.
Mega Trans- Data Width=
fers/sec 8 MB/s
0=Async 0=Async
5 5
10 10
20 20
40 40
This field indicates the maximum data width in bits.
This field indicates whether to scan for this SCSI
identifer at boot time. This item can be used to
ignore a device and to decrease boot time by dis-
abling the inquiry of unused SCSI identifiers.
Set this option to "No" if there is a device that you do
not want to be available to the system. Also, on a
bus with only a few devices attached, the user can
speed up boot time by changing this setting to "No"
for all unused SCSI IDs.
This field indicates whether to scan for Logical Unit
Numbers (LUNs) greater than 0 for a device. LUN 0
is always queried. This option should be used if a
multi-LUN device responds to unoccupied LUNs or if
it is desired to reduce the visibility of a multi-LUN
device to LUN zero only.
Set this option to "No" if you have problems with a
device that responds to all LUNs whether they are
occupied or not. Also, if a SCSI device with multiple
LUNs exists on your system but you do not want all
of those LUNs to be available to the system, then set
this option to "No". This will limit the scan to LUN 0
only.
This field indicates whether to allow a device to dis-
connect during SCSI operations. Some (mostly
newer) devices run faster with disconnect enabled,
while some (mostly older) devices run faster with
disconnect disabled.
Data Width= Synchronous
16 MB/s Period (nsec)
0=Async 0=Async
10 200
20 100
40 50
80 25
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