User`s guide

11 – Updating the Adapter
Updating Adapter Settings
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The default settings for the QLA2xxx adapter are listed in table 11-2 and described
in the following paragraphs.
■ Operation Mode (Windows NT/2000 and Red Hat Linux only). 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 operation. This setting
applies to the QLA23xx adapter. When this setting is 0, the Interrupt Delay
Timer setting is disabled.
■ Interrupt Delay Timer (Windows NT/2000 and Red Hat Linux only). 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 adapter 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.
NOTE: If you save after modifying only this setting, the change takes effect
immediately. For all other NVRAM settings, you must reboot the
adapter for the changes to take effect.
Table 11-2. Advanced Adapter Settings
Setting Options Default
Operation Mode 0—Interrupt for every I/O
completion
5—Interrupt when interrupt
delay timer expires
6—Interrupt when interrupt
delay timer expires or no
active I/O
0—Interrupt for every I/O
completion
Interrupt Delay Timer 0–255 0
Execution Throttle 1–256 16
Enable Extended Error
Logging
Enabled, Disabled Disabled
Login Retry Count 0–255 8
Enable LIP Reset Enabled, Disabled Disabled
Port Down Retry Count 0–255 8
Enable LIP Full Login Enabled, Disabled Enabled
Link Down Timeout 0–255 15
Enable Target Reset Enabled, Disabled Disabled
LUNS per Target 0, 8, 16, 32, 64, 128, 256 8