Areca 24/4 Internal/External Port Pcie 3.0 12 Gb/s SAS/SATA Raid Controller 2Gb Cache - Manual (Page 12)

INTRODUCTION
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1. Introduction
This section presents a brief overview of the 12Gb/s SAS RAID control-
ler, ARC-1883 series. (PCIe 3.0 to 12Gb/s SAS RAID controllers)
1.1 Overview
The 12Gb/s SAS interface supports both 12Gb/s SAS disk drives
for data-intensive applications and 6Gb/s SATA drives for low-cost
bulk storage of reference data. The ARC-1883 family includes 8
ports low profile as well as 12/16/24 internal ports with additional
4 external ports models. The ARC-1883LP/1883i/1883x support
eight 12Gb/s SAS ports via one internal & one external/two inter -
nal/two external Mini SAS HD connector. The ARC-1883ix-12/16/24
attaches directly to SATA/SAS midplanes with 3/4/6 Mini SAS HD
SFF-8643 internal connector or increase capacity using one addi -
tional Mini SAS HD SFF-8644 external connector. When used with
12Gb/s SAS expanders, the controller can provide up to (256) de -
vices through one or more 12Gb/s SAS JBODs, making it an ideal
solution for enterprise-class storage applications that called for
maximum configuration flexibility.
ARC-1883i/LP/x 12Gb/s RAID controllers are low-profile PCIe cards,
ideal for 1U and 2U rack-mount systems. These controllers utilize
the same RAID kernel that has been field-proven in existing exter -
nal RAID controller products, allowing Areca to quickly bring stable
and reliable PCIe 3.0 12Gb/s SAS RAID controllers to the market.
Unparalleled Performance for 12Gb/s SAS
The 12Gb/s SAS RAID controllers raise the standard to higher per-
formance levels with several enhancements including new high per-
formance 1.2 GHz dual core ROC processor, a DDR3-1866 memory
architecture and high performance PCIe 3.0 interface bus intercon-
nection. The low profile controllers by default support on-board 2G
of ECC DDR3-1866 SDRAM memory. ARC-1883ix-12/16/24 RAID
controllers each include one 240-pin DIMM socket with default 2GB
DDR3-1866, single rank, 1Rx8, upgrade to 8GB or 8GB DDR3-
1600, dual rank, 2Rx8, ECC SDRAM. The 12Gb/s SAS is designed
for backward compatibility with 6Gb/s and 3Gb/s SAS/SATA hard