Adapter Properties - TYAN Thunder i860 S2603 User Manual

Adapter Properties

The Adapter Properties menu allows you to view and modify adapter settings, and provides access to an
adapter's device settings. Below are the fields available along with their descriptions.
Field
<Device Properties>
SCSI Parity
Host SCSI ID
SCSI Bus Scan Order
Removeable Media Support
CHS Mapping
* CAUTION: Use care to ensure that the correct disk is the target of the FDISK.
Thunder i860 S2603
Details on field
To view and modify device properties, press
[ENTER].
This field indicates whether SCSI parity is enabled
for an adapter. When disabled, it is also necessary
to disable disconnects for all devices, as parity
checking for the reselection phase is NOT disabled.
If a non-parity generating device disconnects, its
operation will never complete because the reselec-
tion fails due to parity error.
This field indicates the SCSI identifier of an adapter
[0-7] or [0-15]. It is recommended that this field be
set to the highest priority SCSI identifier, which is 7.
This field indicates the order in which to scan SCSI
identifiers on an adapter. Changing this item will
affect drive letter assignment(s) if more than one
device is attached to an adapter. Note: Changing
this item may conflict with an operating system
that automatically assigns drive order.
This field specifies the removable media support
option for an adapter. Three settings are allowed:
None indicates no removable media support
whether the drive is selected as first (BBS), or is first
in the scan order (non-BBS).
Boot Drive Only provides removable media support
for a removable harddrive if it is first in the scan
order.
With Media Installed provides removable media
regardless of the drive ordering.
This field defines how the Cylinder Head Sector val-
ues are mapped onto a disk without pre-existing par-
tition information. CHS Mapping allows two settings:
SCSI Plug-and-Play Mapping (default value), and
Alternate CHS Mapping.
SCSI Plug-and-Play Mapping automatically deter-
mines the most efficient and compatible mapping.
Alternate CHS Mapping utilizes an alternate, possi-
bly less efficient mapping that may be required if a
device is moved between adapters from different
vendors.
Note: Neither of these options has any effect after a
disk has been partitioned using FDISK*. To change
the CHS Mapping on a partitioned disk, use FDISK*
to delete all partitions. Then reboot the system to
clear memory or the old partitioning data will be
reused, thus nullifying the previous operation.
55