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MFI(4) Device Drivers Manual MFI(4)

mfiLSI Logic & Dell MegaRAID SAS RAID controller

mfi* at pci?

The mfi driver provides support for the MegaRAID SAS family of RAID controllers, including:

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, the driver makes them look just like SCSI controllers. All RAID configuration is done through the controllers' BIOSes.

bio(4), intro(4), pci(4), scsi(4), sd(4), bioctl(8), sensorsd(8), sysctl(8)

The mfi driver first appeared in OpenBSD 4.0.

The mfi driver was written by Marco Peereboom <>.

November 8, 2013 OpenBSD-6.4