LSI LSIU40SE Value Line, Руководство пользователя

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Starting the SCSI BIOS Configuration Utility 3-13
Disconnect – SCSI devices have the ability to disconnect from the
initiator during an I/O transfer. This disconnect option frees the SCSI Bus
to allow other I/O processes. This option tells the host adapter whether
or not to allow a device to disconnect. Some devices run faster with
disconnects enabled (typically newer devices), while some run faster with
disconnects disabled (typically older devices).
Read/Write I/O Time-out (seconds) – This option sets the amount of
time the host adapter waits for a read, write, or seek command to
complete before trying the I/O transfer again. Since this provides a
safeguard allowing the system to recover if an I/O operation fails, it is
recommended that you always set the time-out to a value greater than
zero.
Note: If the time-out is set to zero, then the I/O will never time-out.
Scan for Device at Boot Time – 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, you can speed up boot time by
changing this setting to
No
for all unused SCSI IDs.
Scan for SCSI Logical Units (LUNs) – Set this option to
No
if problems
arise with a device that responds to all LUNs whether they are occupied
or not. For example, if there is a SCSI device with multiple LUNs 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.
Queue Tags – This option allows the user to enable or disable the
issuing of queue tags during I/O requests when your device driver can
do this.
Initial Boot – This option allows any device attached to the first adapter
to become the boot device. It provides the users of non-BBS personal
computers with some of the flexibility of a BBS machine.
Format Device – If enabled, this option allows the user to low-level
format a magnetic disk drive. Low-level formatting will completely and
irreversibly erase all data on the drive. Formatting will default the drive to
a 512-byte sector size even if the drive had previously been formatted to
another sector size.