Dell 4100 - Page 48

Installing and Configuring SCSI Drivers 3-15
dev_enable=
00-FF
*
FF Allows you to enable the driver’s registration of SCSI
devices on a per-target basis. This enable bit mask is
entered in hexadecimal format. (See the following
subsection, “Bit Mask Options.”)
lun_enable=
00-FF
*
01 Enables scanning for specific LUNs on all targets. (See
the following subsection, “Bit Mask Options,” for details
on creating bit masks.) For example, a value of 7 causes
the driver to scan for LUNs 0, 1, and 2 on all targets. The
default value of 01 causes the driver to scan LUN 0 only.
tag_disable
0-FF
*
00 Disables tagged queuing for specific targets. This disable
bit mask is entered in hexadecimal format. (See the
following subsection, “Bit Mask Options.”)
io_combine 0-255 16 Specifies the maximum number of segments in a scatter/
gather list.
max_sectors 0-255 64 Specifies the maximum number of sectors in a single
scatter/gather segment.
max_tags 0-255 8 Specifies the maximum number of tagged commands.
max_nontags 0-255 2 Specifies the maximum number of nontagged commands.
read_after_write 0, 1, 2 2 Specifies the default verify mode: 0 = No verify on writes,
1 = Software verify, 2 = Hardware verify.
instrumentation 0, 1 0 If 1 is entered, the instrumentation option is enabled. The
driver maintains internal instrumentation data for use by
I/O management applications. Instrumentation can also be
enabled by the I/O management application, so inclusion
of this option is not necessary.
Table 3-3. load Command Line Options (Continued)
Option Values Default Description
* On the AIC-7880 and optional AHA-2940W, these values become FFFF.
NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary.