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ATARAID(4) NetBSD Kernel Interfaces Manual ATARAID(4)
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by Kimmo Suominen.
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ataraid -- software BIOS RAID
ld* at ataraid? vendtype ? unit ?
The ataraid driver provides support for BIOS-based software RAID con-
trollers. 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
The driver currently supports RAID formats from:
· Adaptec HostRAID (found in Intel 6300ESB)
· Intel MatrixRAID
· JMicron RAID
· nVidia MediaShield
· Promise FastTrak
· Via V-RAID (found in many VIA-based motherboards)
Status of the logical disk, as well as the disks associated with it, can
be viewed through the bioctl(8) utility.
The ataraid driver first appeared in NetBSD 2.0.
The ataraid driver was originally adapted from FreeBSD by Jason Thorpe
Not all features of the software RAID are currently recognized or sup-
ported. For example, the Adaptec support doesn't recognize when a RAID 1
should be in a ``building'' state, and it does not do the right thing.
At least part of the reason for this is that the publicly-available
information on these formats is quite limited.
NetBSD 9.1 September 16, 2008 NetBSD 9.1