NAME
ataraid —
software BIOS RAID
SYNOPSIS
pseudo-device ataraid
ld* at ataraid? vendtype ? unit ?
DESCRIPTION
Theataraid 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.
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.
SEE ALSO
HISTORY
The ataraid driver first appeared in
NetBSD 2.0.
AUTHORS
The ataraid driver was originally adapted
from FreeBSD by Jason Thorpe
⟨thorpej@NetBSD.org⟩.
BUGS
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 “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.