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TWA(4)			    Kernel Interfaces Manual			TWA(4)

NAME
       twa -- 3ware 9000 series	SATA RAID controllers driver

SYNOPSIS
       device twa

DESCRIPTION
       The  twa	 driver	provides support for the AMCC's	3ware 9000 series SATA
       controllers.

       These controllers are available in 4, 8 or 12-port configurations,  and
       support	the  following RAID levels: 0, 1, 10, 5, 50.  The device nodes
       for the controllers are of the form /dev/twaX,  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.

HARDWARE
       The twa driver supports the following SATA RAID controllers:

          AMCC's 3ware	9500S-4LP
          AMCC's 3ware	9500S-8
          AMCC's 3ware	9500S-8MI
          AMCC's 3ware	9500S-12
          AMCC's 3ware	9500S-12MI

DIAGNOSTICS
       Whenever	the driver encounters a	command	failure, it prints out an  er-
       ror  code in the	format:	"ERROR:	(<error	source>: <error	code>):", fol-
       lowed by	a text description of the error.  There	are other  error  mes-
       sages  and  warnings that the driver prints out,	depending on the kinds
       of errors that it encounters.  If the driver is compiled	with TWA_DEBUG
       defined,	it prints out a	whole bunch of debug messages, the quantity of
       which varies depending on the value assigned to TWA_DEBUG (0 to 10).

AUTHORS
       The  twa	 driver	 and   manpage	 were	written	  by   Vinod   Kashyap
       <vkashyap@FreeBSD.org>.

GNU				August 15, 2004				TWA(4)

NAME | SYNOPSIS | DESCRIPTION | HARDWARE | DIAGNOSTICS | AUTHORS

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