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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 3.7 January 14, 2013 DragonFly 3.7