MFII(4)

MFII(4) | Device Drivers Manual | MFII(4)

# NAME

`mfii` — LSI Logic MegaRAID SAS Fusion RAID controller

# SYNOPSIS

`mfii* at pci?`

# DESCRIPTION

The `mfii` driver provides support for the MegaRAID SAS Fusion family of RAID controllers using the following chipsets:

- SAS2208
- SAS3008
- SAS3108
- SAS3216
- SAS3224
- SAS3316
- SAS3324
- SAS3404
- SAS3408
- SAS3416
- SAS3504
- SAS3508
- SAS3516
- SAS3908
- SAS3916

These controllers support RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50 and RAID 60 using either SAS or SATA II drives.

Although the controllers are actual RAID controllers, they appear as SCSI controllers. All RAID configuration is done through the controllers' BIOSes.

`mfii` supports monitoring of the logical disks in the controller through the bioctl(8) and envstat(8) commands.

# EVENTS

The `mfii` driver is able to send events to powerd(8) if a logical drive in the controller is not online. The state-changed event will be sent to the /etc/powerd/scripts/sensor_drive script when such condition happens.

# SEE ALSO

bio(4), intro(4), pci(4), scsi(4), sd(4), bioctl(8), envstat(8), powerd(8)

# HISTORY

The `mfii` driver first appeared in OpenBSD 5.3 and NetBSD 8.0.

# AUTHORS

The `mfii` driver was written by David Gwynne <dlg@openbsd.org>.

July 16, 2022 | NetBSD 11.0