User`s guide

11 – Updating the HBA
Updating the HBA Port Settings, Advanced HBA Port Settings, and Boot Device
FS0054603-00 C 11-11
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■ Operation Mode (Windows 2000/Windows Server 2003 and Red Hat/SuSE
Linux). This setting specifies the reduced interrupt operation (RIO) modes, if
supported by the software driver. RIO modes allow posting multiple command
completions in a single interrupt. The default is 0
—Interrupt for every I/O
completion. This setting applies to the QLA23xx HBA. When this setting is 0, the
Interrupt Delay Timer setting is disabled.
■ Interrupt Delay Timer (Windows 2000/Windows Server 2003 and Red
Hat/SuSE Linux). This setting contains the value (in 100-microsecond
increments) used by a timer to set the wait time between accessing (DMA) a set
of handles and generating an interrupt. The default is 0. This setting applies to
the QLA23xx HBA and is enabled only when the Operation Mode setting is 5
or 6. When the Operation Mode setting is 0, this setting is disabled.
■ Execution Throttle. This setting specifies the maximum number of commands
executing on any one port. When a port’s execution throttle is reached, no new
commands are executed until the current command finishes executing. The valid
options for this setting are 1–256. The default is 16.
■ Enable Extended Error Logging. This setting provides additional error and
debug information to the operating system. The default is disabled.
When enabled in Windows 2000/Windows Server 2003, events are logged into
the Event Viewer. When enabled in Solaris SPARC, events are logged into the
/var/adm/messages file. When enabled in Red Hat/SuSE Linux, events are
logged into the /var/log/messages file.
■ Login Retry Count. This setting specifies the number of times the software tries
to log in to a device. The default is 8 retries.
■ Enable LIP Reset. This setting determines the type of LIP reset that is used
when the operating system initiates a bus reset routine. When this setting is
enabled, the driver initiates a global LIP reset to clear the target device
reservations. When this setting is disabled, the driver initiates a global LIP reset
with full login. The default is disabled.
■ Port Down Retry Count. This setting specifies the number of times the software
retries a command to a port returning port down status. The default is 8 retries.
■ Enable LIP Full Login. This setting instructs the ISP chip to re-login to all ports
after any loop initialization process (LIP). The default is enabled.
■ Link Down Timeout (not supported in Novell NetWare). This setting specifies
the time the driver waits for the link to come up after link down before returning
the I/Os. This is analogous to the Port Down Retry Count setting, which is used
when the port is down. Valid values for the Link Down Timeout setting are in
the range 0–255. A value of 0 indicates that the previous algorithm is used. A
value in the range 1–255 indicates the number of seconds that the driver waits
for the link to come up before returning the I/Os.