Dell Emulex Family of Adapters - Manual (Page 663)

Emulex Drivers for Windows User Manual P010077-01A Rev. A
3. Configuration
iSCSI Driver Configuration
663
im_policy 2 0 4 The Interrupt Moderation policy
parameter controls the rate of
interrupts for the UCNA. For more
information, see “Interrupt
Moderation Policy Settings” on
page 664.
large_io 64 64 512 Maximum transfer size in a single
I/O request, in KB. By default, the
iSCSI driver supports a maximum of
64 KB of data and 16 scatter/gather
entries in a single I/O request. This
option enables support for 512 KB of
data in a single I/O request. If an
application issues an I/O request that
is larger than 64 KB or that needs
more than 16 scatter/gather entries,
the request is split into multiple
requests by the Storport driver.
Note: If the large_io parameter is set
to 512, the amount of physical
memory consumed by the
driver increases. Also,
although intermediate values
between 64 and 512 are
accepted, the memory used by
the driver is the same as is
used if large_io is set to 512.
LDTO 20 seconds 0 seconds 3600 seconds LDTO, in seconds. This parameter
determines the amount of time the
driver waits for the controller's
physical link to be available before
reporting that the LUNs are
unavailable to the operating system.
lqd 128 1 255 The LUN queue depth parameter
configures the number of concurrent
commands to a logical unit via
Storport API
StorPortSetDeviceQueueDepth. The
lqd parameter also sets the maximum
number of concurrent commands
allowed per LUN.
Table 3-12 iSCSI Driver Options (Continued)
Parameter Default Value Minimum Value Maximum Value Description