1 .\" $NetBSD: ataraid.4,v 1.13 2008/09/15 11:44:50 tron Exp $
3 .\" Copyright (c) 2005 The NetBSD Foundation, Inc.
4 .\" All rights reserved.
6 .\" This code is derived from software contributed to The NetBSD Foundation
7 .\" by Allen K. Briggs.
9 .\" Redistribution and use in source and binary forms, with or without
10 .\" modification, are permitted provided that the following conditions
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.
18 .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 .\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 .\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 .\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 .\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 .\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 .\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 .\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 .\" POSSIBILITY OF SUCH DAMAGE.
30 .Dd September 16, 2008
35 .Nd software BIOS RAID
37 .Cd "pseudo-device ataraid"
38 .Cd "ld* at ataraid? vendtype ? unit ?"
42 driver provides support for BIOS-based software RAID controllers.
43 These are devices which have some simple support for several basic
44 RAID levels (often RAID 0 and RAID 1), but which require software
45 support to actually perform the RAID function.
46 The BIOS support is largely just to create and recognize the array
47 so that it may be a boot device.
49 The driver currently supports RAID formats from:
50 .Bl -bullet -offset indent -compact
52 Adaptec HostRAID (found in Intel 6300ESB)
62 Via V-RAID (found in many VIA-based motherboards)
65 Status of the logical disk as well as the disks associated with it,
66 can be viewed through the
75 driver first appeared in
80 driver was originally adapted from
84 .Aq thorpej@NetBSD.org .
86 Not all features of the software RAID are currently recognized or
88 For example, the Adaptec support doesn't recognize when a RAID 1
91 state, and it does not do the right thing.
93 At least part of the reason for this is that the publically-available
94 information on these formats is quite limited.