| MPII(4) | Device Drivers Manual | MPII(4) | 
mpii —
mpii* at pci? dev ? function ?
mpii driver provides support for storage controllers
  using the LSI Logic Fusion-MPT Message Passing Interface II family of
  chipsets:
These chipsets can be found on the following controllers:
Some models of these controllers carry an Integrated RAID (IR) firmware providing support for RAID 0, RAID 1, RAID10 or RAID5 using SAS or SATA drives. All RAID configuration is done through the controllers' BIOSes.
mpii supports monitoring of the logical
    disks in the controller through the
    bioctl(8) and
    envstat(8) commands.
mpii 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.
mpii driver first appeared in
  OpenBSD 4.7. NetBSD support
  was added in NetBSD 6.0.
mpii driver was written by James
  Giannoules and Mike Belopuhov.
mpii do not use a SCSI-like
  identifier. Instead they use an opaque ID and leave discovery order up to the
  operating system. The code to handle this is currently not implemented and
  therefore it is not a good idea to run this driver on a multi-boot machine.
| May 7, 2019 | NetBSD 10.1 |