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TWS(4)		       FreeBSD Kernel Interfaces Manual			TWS(4)

NAME
     tws -- 3ware 9750 SATA+SAS	6Gb/s RAID controller card 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 SATA+SAS 6Gb/s RAID
     controller	cards.

     These controllers feature the LSISAS2108 6Gb/s SAS	RAID-on-Chip (ROC) and
     are available in 4- and 8-port configurations, supports RAID levels 0, 1,
     5,	6, 10, 50 and single disk, with	96 SATA	and/or SAS hard	drives and
     SSDs.

     For further hardware information, see http://www.lsi.com/.

HARDWARE
     The tws driver supports the following SATA/SAS RAID controller:

     +o	 LSI's 3ware SAS 9750 series

LOADER TUNABLES
     Tunables can be set at the	loader(8) prompt before	booting	the kernel or
     stored in loader.conf(5).

     hw.tws.cam_depth	    The	maximum	queued CAM SIM requests	for one	con-
			    troller.  The default value	is 256.

     hw.tws.enable_msi	    This tunable enables MSI support on	the controller
			    if set to a	non-zero value.	 The default value is
			    0.

     hw.tws.queue_depth	    The	maximum	queued requests	for one	controller.

     hw.tws.use_32bit_sgls  Limit the driver to	use only 32-bit	SG elements
			    regardless whether the operating system is running
			    in 64-bit mode.  The default value is 0.

FILES
     /dev/da?	array/logical disk interface
     /dev/tws?	management interface

DIAGNOSTICS
     Whenever the driver encounters a command failure, it prints out an	error
     code in the format: "ERROR: (<error source>: <error code>):", followed by
     a text description	of the error.  There are other error messages and
     warnings that the driver prints out, depending on the kinds of errors
     that it encounters.  If the driver	is compiled with TWS_DEBUG defined, it
     prints out	a whole	bunch of debug messages.

SEE ALSO
     da(4), scsi(4)

AUTHORS
     The tws driver was	written	by Manjunath Ranganathaiah for LSI and this
     manual page was written by	Xin LI <delphij@FreeBSD.org> for iXsystems,
     Inc.

FreeBSD	10.1			October	4, 2011			  FreeBSD 10.1

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | LOADER TUNABLES | FILES | DIAGNOSTICS | SEE ALSO | AUTHORS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=tws&sektion=4&manpath=FreeBSD+8.4-RELEASE>

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