NAME
ataraid —
software BIOS RAID
SYNOPSIS
pseudo-device ataraid
ld* at ataraid? vendtype ? unit ?
DESCRIPTION
The
ataraid 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
ld(4),
bioctl(8)
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.