LSI LSI21002 User Manual page 51

Pci to dual channel scsi host adapter
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Parity – The LSI Logic PCI to SCSI host adapters always generate
parity, but some older SCSI devices do not. Therefore, you are offered
the option of disabling parity checking.
Note:
When disabling parity checking, it is also necessary to
disable disconnects for all devices, as parity checking for
the reselection phase is not disabled. If a device does not
generate parity, and it disconnects, the I/O never completes
because the reselection never completes.
Host SCSI ID – In general, it is suggested that you do not change your
host adapter ID from the default value of 7, as this gives it the highest
priority on the SCSI bus.
Scan Order – This option allows the user to tell the SCSI BIOS and
device drivers to scan the SCSI bus from low to high (0 to max) SCSI
ID, or from high to low (max to 0) SCSI ID. If you have more than one
device on the SCSI bus, changing the scan order changes the order in
which drive letters are assigned by the system. Drive order may be
reassigned differently in systems supporting the BIOS Boot Specification
(BBS). See the PCI Storage Device Management System SDMS 4.0
User's Guide, Chapter 2 "SCSI BIOS" for additional information regarding
BBS.
Note:
The scan order option may conflict with operating systems
that automatically assign a drive order.
Removable Media Support – This option defines the removable media
support for a specific drive. When this option is selected, a window
appears with three choices:
None
Indicates there is no removable media support whether the drive is
selected in BBS as being first, or first in scan order in non-BBS.
Boot Drive Only
Provides removable media support for a removable hard drive if it is
first in the scan order.
With Media Installed
Provides removable media support wherever the drive(s) actually
resides.
Starting the SCSI BIOS Configuration Utility
3-9

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