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Manual Pages  — ARCMSR


arcmsr – Areca RAID Controller driver



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):



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.


The arcmsr driver supports the following cards:


/dev/da? Array block device
  Management interface


da(4), scbus(4)


The arcmsr driver first appeared in FreeBSD 5.4 .


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


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

ARCMSR (4) October 15, 2020

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