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 controllers.

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 controller 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.
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