---
name: "arcmsr"
section: "4"
platform: "linux"
package: "freebsd-manpages"
version: "6.0-5"
release: "Debian 4.0 (Etch)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/arcmsr"
---

# arcmsr(4)

Areca SATA II RAID Controller driver

## NAME

**arcmsr** – Areca SATA II RAID Controller driver

## SYNOPSIS

**device arcmsr** **device pci** **device scbus** **device da**

## DESCRIPTION

The **arcmsr** driver provides support for the Areca ARC-11xx and ARC-12xx series of SATA II 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 cards:

- ARC-1110

- ARC-1120

- ARC-1130

- ARC-1160

- ARC-1130-ML

- ARC-1160-ML

- ARC-1210

- ARC-1220

- ARC-1230

- ARC-1260

- ARC-1230-ML

- ARC-1260-ML

## FILES

- */dev/da?*

  Array block device

- */dev/arcmsr?*

  Management interface

- */boot/kernel/arcmsr.ko*

  Loadable module

## SEE ALSO

[da(4)](/da/4.md), [scbus(4)](/scbus/4.md)

## 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.