1.\" $NetBSD: ataraid.4,v 1.3 2005/06/26 08:55:48 wiz Exp $ 2.\" 3.\" Copyright (c) 2005 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Allen K. Briggs. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd June 19, 2005 38.Dt ATARAID 4 39.Os 40.Sh NAME 41.Nm ataraid 42.Nd software BIOS RAID 43.Sh SYNOPSIS 44.Cd "pseudo-device ataraid" 45.Sh DESCRIPTION 46The 47.Nm 48driver provides support for BIOS-based software RAID controllers. 49These are devices which have some simple support for several basic 50RAID levels (often RAID 0 and RAID 1), but which require software 51support to actually perform the RAID function. 52The BIOS support is largely just to create and recognize the array 53so that it may be a boot device. 54.Pp 55The driver currently supports RAID formats from: 56.Bl -bullet -offset indent -compact 57.It 58Promise Fasttrak 59.It 60Adaptec HostRAID (found in Intel 6300ESB) 61.El 62.Sh SEE ALSO 63.Xr ld 4 64.Sh HISTORY 65The 66.Nm 67driver first appeared in 68.Nx 2.0 . 69.Sh AUTHORS 70The 71.Nm 72driver was originally adapted from 73.Fx 74by 75.An Jason Thorpe 76.Aq thorpej@NetBSD.org . 77.Sh BUGS 78Not all features of the software RAID are currently recognized or 79supported. 80For example, the Adaptec support doesn't recognize when a RAID 1 81should be in a 82.Dq building 83state, and it does not do the right thing. 84.Pp 85At least part of the reason for this is that the publically-available 86information on these formats is quite limited. 87