ARCMSR(4)              FreeBSD Kernel Interfaces Manual              ARCMSR(4)

NAME

     arcmsr - Areca RAID Controller driver

SYNOPSIS

     To compile this driver into the kernel, place the following lines in your
     kernel configuration file:

           device pci
           device scbus
           device da
           device arcmsr

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

           arcmsr_load="YES"

DESCRIPTION

     The arcmsr driver provides support for the Areca ARC-11xx, ARC-12xx,
     ARC-13xx, ARC-16xx and ARC-18xx series of SAS and SATA RAID controllers.
     These controllers feature RAID-0, 1, 3, 5, 6, and 10 and JBOD
     acceleration for up to 16 SATA drives.  RAID level and stripe level
     migration, online capacity expansion, hot insertion/removal, automatic
     failover and rebuild, and SMART are also supported.  Access to the arrays
     is provided via the SCSI CAM /dev/da? device nodes.  A management
     interface is also present via the /dev/arcmsr? device node.  Management
     tools for i386 and amd64 are available from Areca.

HARDWARE

     The arcmsr driver supports the following Areca PCI-X/PCIe SATA/SAS/NVMe
     RAID host adapters:

     o   ARC-1110
     o   ARC-1120
     o   ARC-1130
     o   ARC-1160
     o   ARC-1170
     o   ARC-1110ML
     o   ARC-1120ML
     o   ARC-1130ML
     o   ARC-1160ML
     o   ARC-1200
     o   ARC-1201
     o   ARC-1203
     o   ARC-1210
     o   ARC-1212
     o   ARC-1213
     o   ARC-1214
     o   ARC-1216
     o   ARC-1220
     o   ARC-1222
     o   ARC-1223
     o   ARC-1224
     o   ARC-1226
     o   ARC-1230
     o   ARC-1231
     o   ARC-1260
     o   ARC-1261
     o   ARC-1270
     o   ARC-1280
     o   ARC-1210ML
     o   ARC-1220ML
     o   ARC-1231ML
     o   ARC-1261ML
     o   ARC-1280ML
     o   ARC-1380
     o   ARC-1381
     o   ARC-1680
     o   ARC-1681
     o   ARC-1880
     o   ARC-1882
     o   ARC-1883
     o   ARC-1884
     o   ARC-1886

FILES

     /dev/da?      Array block device
     /dev/arcmsr?  Management interface

SEE ALSO

     da(4), scbus(4)

HISTORY

     The arcmsr driver first appeared in FreeBSD 5.4.

AUTHORS

     The driver was written by Erich Chen <erich@areca.com.tw>.

BUGS

     The driver has been tested on i386 and amd64.  It likely requires
     additional work to function on big-endian architectures.

FreeBSD 15.1-STABLE-HBSD         April 5, 2026                       ARCMSR(4)