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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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