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Execution throttle: This setting specifies the maximum number of commands
that can run on any one port. When a port reaches its execution throttle,
Fast!UTIL does not run any new commands until the current command is
completed. The valid options for this setting are 1 through 256. The default
(optimum) is 256.
LUNs per target: This setting specifies the number of logical unit numbers
(LUNs) per device. Multiple LUN support is typically for RAID enclosures that
use LUNs to map drives. The default setting is 0.
Enable LIP reset: This setting determines the type of loop initialization process
(LIP) reset that is used when the operating system initiates a bus reset routine.
When this option is set to Yes, the device driver initiates a global LIP reset to
clear the target device reservations. When this option is set to No, the device
driver initiates a global LIP reset with full login. The default setting is No.
Enable LIP full logon: This setting instructs the application specific integrated
circuit (ASIC) chip to log in to all ports after any LIP. The default setting is
Yes.
Enable target reset: This setting enables the device drivers to issue a Target
Reset command to all devices on the loop when a SCSI Bus Reset command is
issued. The default setting is Yes.
Login retry count: This setting specifies the number of times the software tries
to log in to a device. The default setting is 30 retries.
Port down retry count: This setting specifies the number of times the software
retries a command to a port that is returning port-down status. The default
setting is 30.
IOCB allocation: This setting specifies the maximum number of buffers from
the firmware buffer pool that are allocated to any one port. The default setting
is 256.
Note: The meaning of IOCB is input/output control block.
Extended error logging: When set to Enabled, this setting provides additional
error and debugging information to the Microsoft Windows operating system
event error log. The default setting is Disabled.
RIO operation mode: This setting specifies the reduced interrupt operation
(RIO) mode, if supported by the software device driver. When the expansion
card is in the RIO mode you can post multiple command completions in a
single interrupt (see Table 7 on page 22). The default setting is 0.
Chapter 4. Using IBM Fast!UTIL 21