ami —
American Megatrends Inc. MegaRAID PATA/SATA/SCSI RAID
controller
ami* at pci?
The
ami driver provides support for the
MegaRAID family of RAID controllers, including:
- ACER MegaRAID ROMB-2E
- Apple Xserve G5 PCI Hardware RAID Card
- Dell CERC-PATA, PERC 2/DC, PERC 2/SC, PERC 3/DC, PERC 3/DCL, PERC 3/QC,
PERC 3/SC, PERC 4/DC, PERC 4/Di, PERC 4/SC, PERC 4e/DC, PERC 4e/Di, PERC
4e/SC, PERC 4e/Si
- FSC MegaRAID PCI Express ROMB
- Hewlett-Packard 438, 466, T[567]
- Intel RAID Controller SRCS16, SRCS28X, SRCU41L, SRCU42E, SRCU42X,
SROMBU42E, SRCZCRX
- LSI Logic/AMI/Symbios MegaRAID, 523 SATA, i4 133 RAID, ATA 133-2 Elite
1400, Elite 1600, Elite 1650, Enterprise 1200, Enterprise 1300, Enterprise
1400, Enterprise 1500, Enterprise 1600, Express 100, Express 200, Express
300, Express 500, Series 418, SCSI 320-0, SCSI 320-0X, SCSI 320-1, SCSI
320-1E, SCSI 320-1LP, SCSI 320-2, SCSI 320-2E, SCSI 320-2X, SCSI 320-4X,
SATA 150-4, SATA 150-6, SATA 300-4X, SATA 300-8ELP, SATA 300-8X, SATA
300-8XLP
- NEC MegaRAID PCI Express ROMB
These controllers support RAID 0, RAID 1, RAID 5, JBOD, and superpositions of
those configurations.
Although the controllers are actual RAID controllers, the driver makes them look
just like SCSI controllers. All RAID configuration is done through the
controllers' BIOSes.
The management interface is provided through the
bio(4) device or one of the
daughter
sd(4) devices as
implemented in the
bioctl(8)
utility. Logical disk status is exposed under the
hw.sensors
sysctl(8) and can be monitored
using
sensorsd(8). For
example:
$ sysctl hw.sensors.ami0
hw.sensors.ami0.drive0=online (sd0), OK
hw.sensors.ami0.drive1=degraded (sd1), WARNING
hw.sensors.ami0.drive2=failed (sd2), CRITICAL
bio(4),
intro(4),
pci(4),
scsi(4),
sd(4),
bioctl(8),
sensorsd(8),
sysctl(8)
The
ami driver first appeared in
OpenBSD 2.9.
The
ami driver was written by
Michael Shalayeff
<
mickey@openbsd.org>.
Management functions were implemented by
Marco
Peereboom
<
marco@openbsd.org>.
![[OpenBSD]](/openbsd.gif){kind=small}