INTRODUCTION
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1. Introduction
This section presents a brief overview of the SAS RAID controller, ARC-
1212/1222 series. (PCIe to SAS/SATA RAID controllers)
1.1 Overview
SAS builds on parallel SCSI by providing higher performance,
improving data availability, and simplifying system design. The
SAS interface supports both SAS disk drives for data-intensive
applications and Serial ATA (SATA) drives for low-cost bulk storage
of reference data. The ARC-1212/1222 support directly attach 4/8
SAS ports via one internal /two internal Min SAS connector. Each
port on the SAS controllers supports SAS and/or SATA devices.
Since there is no expander support on those boards, this can
meet the customer inquiry SAS solution (using same enclosure) to
replace SATA solution. The ARC-1212/1222 RAID controllers only
support directly attach to 4/8 SAS/SATA drives without supporting
the expand function.
The ARC-1212/1222 RAID controllers are low-prole PCIe cards,
ideal for 1U and 2U rack-mount systems without needing the ex-
pansion capability. These controllers utilize the same RAID kernel
that has been eld-proven in existing external RAID controller
products, allowing Areca to quickly bring stable and reliable RAID
controllers to the market
Unparalleled Performance
The SAS RAID controllers raise the standard to higher performance
levels with several enhancements including Intel new high-perfor-
mance I/O Processor, a DDR2-533 memory architecture and high
performance PCIe x8 Link host interface bus interconnection. The
low prole controllers by default support on-board 256MB of ECC
DDR2-533 SDRAM memory with optional battery backup module
The test result is against overall performance compared to other
SAS RAID controllers. The powerful Intel new I/O processors inte-
grated 4/8-port SAS I/O ports on chip delivers high performance
for servers and workstations.
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