Areca ARC-1231ML/1261ML/1280ML User Manual

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INTRODUCTION
10
1. Introduction
This section presents a brief overview of the SATA RAID Series 
controller, ARC-1110/1110ML/1120/1120ML/1130/1130ML/1160/
1160ML/1170 (4/8/12/16/24-port PCI-X SATA RAID Controllers) and 
ARC-1210/1220/1230/1230/1231ML/1260/1261ML/1280/1280ML 
(4/8/12/16/24-port PCI-Express SATA RAID Controllers).
1.1 Overview
The ARC-11xx and ARC-12xx Series of high-performance Serial ATA 
RAID controllers support a maximum of 4, 8, 12, 16, or 24 SATA 
II peripheral devices (depending on model) on a single controller. 
The ARC-11xx series for the PCI-X bus and the ARC-12xx Series  
for the PCI-Express bus. When properly configured, these SATA 
controllers provide non-stop service with a high degree of fault 
tolerance through the use of RAID technology and can also provide 
advanced array management features.
The 4 and 8 port SATA RAID controllers are low-profile PCI cards, 
ideal for 1U and 2U rack-mount systems. These controllers utilize 
the same RAID kernel that has been field-proven in Areca existing 
external RAID controllers, allowing Areca to quickly bring stable 
and reliable RAID controllers to the market.
Unparalleled Performance
 
The SATA RAID controllers provide reliable data protection for 
desktops, workstations, and servers. These cards set the stan-
dard with enhancements that include a high-performance Intel I/O 
Processor, a new memory architecture, and a high performance PCI 
bus interconnection. The 8/12/16/24-port controllers with the RAID 
6 engine built-in can offer extreme-availability RAID 6 functionality. 
This engine can concurrently compute two parity blocks with per-
formance very similar to RAID 5. The controllers by default support 
256MB of ECC SDRAM memory. The 12/16/24 port controllers sup-
port one DDR333 SODIMM socket that allows for upgrading up to 
1GB of memory. The 12/16/24 port controllers support one DDR2-
533 DIMM socket that allows for upgrading up to 2GB of memory. 
The controllers use Marvell 4/8 channel SATA PCI-X controller