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TWS(4)                DragonFly Kernel Interfaces Manual                TWS(4)


NAME

     tws -- 3ware 9750 series SATA/SAS RAID controllers driver


SYNOPSIS

     To compile this driver into the kernel, place the following lines in your
     kernel configuration file:

           device scbus
           device tws

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

           tws_load="YES"


DESCRIPTION

     The tws driver provides support for LSI's 3ware 9750 series SATA/SAS con-
     trollers.

     These controllers are available in 4, 8, 16 or 24-port configurations,
     and support the following RAID levels: 0, 1, 10, 5, 50, 6.  The device
     nodes for the controllers are of the form /dev/twsX, where X is the con-
     troller number.  The driver is implemented as a SCSI SIM under CAM, and,
     as such, the logical units that it controls are accessible via the device
     nodes, /dev/daY, where Y is the logical unit number.


LOADER TUNABLES

     hw.tws.msi.enable
             By default, the driver will use MSI if it is supported.  This
             behavior can be turned off by setting this tunable to 0.


HARDWARE

     The tws driver supports the following SATA RAID controllers:

     *   LSI's 3ware SAS 9750-4i
     *   LSI's 3ware SAS 9750-4i4e
     *   LSI's 3ware SAS 9750-8i
     *   LSI's 3ware SAS 9750-8e
     *   LSI's 3ware SAS 9750-16i4e
     *   LSI's 3ware SAS 9750-24i4e


SEE ALSO

     da(4), twa(4), twe(4)


COPYRIGHT

     Copyright (c) 2010, LSI Corp.
     All rights reserved.
     Author : Manjunath Ranganathaiah
     Support: freebsdraid@lsi.com

     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions
     are met:

     1. Redistributions of source code must retain the above copyright
        notice, this list of conditions and the following disclaimer.
     2. Redistributions in binary form must reproduce the above copyright
        notice, this list of conditions and the following disclaimer in
        the documentation and/or other materials provided with the
        distribution.
     3. Neither the name of the <ORGANIZATION> nor the names of its
        contributors may be used to endorse or promote products derived
        from this software without specific prior written permission.

     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     POSSIBILITY OF SUCH DAMAGE.

DragonFly 3.5                  January 14, 2013                  DragonFly 3.5

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