| ARCMSR(4) | Device Drivers Manual | ARCMSR(4) | 
arcmsr —
arcmsr* at pci? dev ? function ?
arcmsr driver provides support for the PCI-X and PCI
  Express RAID controllers from Areca Technology Corporation:
These controllers support RAID levels 0, 1, 1E, 3, 5, 6, and JBOD using either SAS or SATA II drives.
arcmsr supports management and monitoring
    of the controller through the
    bioctl(8) and
    envstat(8) commands.
Please note, however, that to use some features that require special privileges, such as creating/removing hot-spares, pass-through disks or RAID volumes will require to have the password disabled in the firmware; otherwise a Permission denied error will be reported by bioctl(8).
When a RAID 1 or 1+0 volume is created, either through the bioctl(8) command or controller's firmware, the volume won't be accessible until the initialization is done. A way to get access to the sd(4) device that corresponds to that volume without rebooting, is to issue the following command (once the initialization is finished):
$ scsictl scsibus0 scan any any
The arcmsr driver will also report to the
    kernel log buffer any error that might appear when handling firmware
    commands, such as used by the
    bioctl(8) command.
arcmsr driver is able to send events to
  powerd(8) if a volume or any
  drive connected to the volume is not online. The
  state-changed event will be sent to the
  /etc/powerd/scripts/sensor_drive script when such
  condition happens.
arcmsr driver first appeared in
  NetBSD 5.0.
arcmsr driver was originally written for
  OpenBSD by David Gwynne. It
  was ported to NetBSD and extended by
  Juan Romero Pardines.
| March 3, 2008 | NetBSD 9.4 |