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twa - 3ware 9000/9500/9550/9650 series SATA RAID controllers driver

 

NAME

      twa - 3ware 9000/9500/9550/9650 series SATA RAID controllers driver
 

SYNOPSIS

      To compile this driver into the kernel, place the following lines in your
      kernel configuration file:
 
            device scbus
            device twa
 
      Alternatively, to load the driver as a module at boot time, place the
      following line in loader.conf(5):
 
            twa_load="YES"
 

DESCRIPTION

      The twa driver provides support for AMCC’s 3ware 9000/9500/9550/9650
      series SATA controllers.
 
      These controllers are available in 4, 8, 12 or 16-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 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.
 

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
            AMCC’s 3ware 9500SX-4LP
            AMCC’s 3ware 9500SX-8LP
            AMCC’s 3ware 9500SX-12
            AMCC’s 3ware 9500SX-12MI
            AMCC’s 3ware 9500SX-16ML
            AMCC’s 3ware 9550SX-4LP
            AMCC’s 3ware 9550SX-8LP
            AMCC’s 3ware 9550SX-12
            AMCC’s 3ware 9550SX-12MI
            AMCC’s 3ware 9550SX-16ML
            AMCC’s 3ware 9650SE-2LP
            AMCC’s 3ware 9650SE-4LPML
            AMCC’s 3ware 9650SE-8LPML
            AMCC’s 3ware 9650SE-12ML
            AMCC’s 3ware 9650SE-16ML
            AMCC’s 3ware 9650SE-24M8
 

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 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〉.
 

Sections

Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.