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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
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+<table class="head">
+ <tr>
+ <td class="head-ltitle">ATARAID(4)</td>
+ <td class="head-vol">Device Drivers Manual</td>
+ <td class="head-rtitle">ATARAID(4)</td>
+ </tr>
+</table>
+<div class="manual-text">
+<section class="Sh">
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
+<p class="Pp"><code class="Nm">ataraid</code> &#x2014; <span class="Nd">software
+ BIOS RAID</span></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<p class="Pp"><code class="Cd">pseudo-device ataraid</code>
+ <br/>
+ <code class="Cd">ld* at ataraid? vendtype ? unit ?</code></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<p class="Pp">The <code class="Nm">ataraid</code> driver provides support for
+ BIOS-based software RAID controllers. These are devices which have some
+ simple support for several basic RAID levels (often RAID 0 and RAID 1), but
+ which require software support to actually perform the RAID function. The
+ BIOS support is largely just to create and recognize the array so that it
+ may be a boot device.</p>
+<p class="Pp">The driver currently supports RAID formats from:</p>
+<ul class="Bl-bullet Bd-indent Bl-compact">
+ <li>Adaptec HostRAID (found in Intel 6300ESB)</li>
+ <li>Intel MatrixRAID</li>
+ <li>JMicron RAID</li>
+ <li>nVidia MediaShield</li>
+ <li>Promise FastTrak</li>
+ <li>Via V-RAID (found in many VIA-based motherboards)</li>
+</ul>
+<p class="Pp">Status of the logical disk, as well as the disks associated with
+ it, can be viewed through the <a class="Xr">bioctl(8)</a> utility.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
+ ALSO</a></h1>
+<p class="Pp"><a class="Xr">ld(4)</a>, <a class="Xr">bioctl(8)</a></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
+<p class="Pp">The <code class="Nm">ataraid</code> driver first appeared in
+ <span class="Ux">NetBSD 2.0</span>.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
+<p class="Pp">The <code class="Nm">ataraid</code> driver was originally adapted
+ from <span class="Ux">FreeBSD</span> by <span class="An">Jason Thorpe</span>
+ &#x27E8;thorpej@NetBSD.org&#x27E9;.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="BUGS"><a class="permalink" href="#BUGS">BUGS</a></h1>
+<p class="Pp">Not all features of the software RAID are currently recognized or
+ supported. For example, the Adaptec support doesn't recognize when a RAID 1
+ should be in a &#x201C;building&#x201D; state, and it does not do the right
+ thing.</p>
+<p class="Pp">At least part of the reason for this is that the
+ publicly-available information on these formats is quite limited.</p>
+</section>
+</div>
+<table class="foot">
+ <tr>
+ <td class="foot-date">September 16, 2008</td>
+ <td class="foot-os">NetBSD 10.1</td>
+ </tr>
+</table>