SAS3324 Datasheet, PDF (1/2 Pages) Broadcom Corporation. – PCIe® to 24-port, 12Gb/s SAS/SATA ROC

Product Brief
SAS 3324
PCIe® to 24-port, 12Gb/s SAS/SATA ROC
Applications
• Direct Attached SAS/SATA controller
solutions for entry to mid-range servers
• SAS RAID host bus adapter
• Cost e ective, single chip solution
for entry-level RAID storage systems
supporting up to 24 direct-attach drives
• Storage Processor for external storage
applications (SAS 3324SP)
Key Features
• High Performance IOP
– (2) PowerPC 476 @ 1.2GHz
– (2) 32KB L1 I/D caches
– (2) 512KB L2 caches
– 2MB shared L3 cache
• Exclusive-OR hardware engine for
RAID 5
• RAID 6 hardware acceleration
• RAID Features
– MegaRAID® support with
activation key (RAID levels 0, 1, 5, 6,
10, 50 and 60)
• DRAM back-up at power fail using ONFI
(Open NAND Flash Interface)
– Supports bad block management
– Also supports o oad to SDRAM
(requires battery backup or
Supercap)
Extending RAID and SAS Technology Leadership, Broadcom Introduces
24-port 12Gb/s SAS/SATA RAID-On-Chip (ROC)
Broadcom storage o ers the industry’s broadest portfolio of storage
solutions, backed by decades of experience and trusted by the world’s
leading server and storage suppliers. Broadcom provides the building
blocks for storage solutions that help customers understand, prioritize,
store and protect critical data.
The Broadcom 12Gb/s SAS portfolio includes MegaRAID® controller cards,
host bus adapters (HBAs), advanced software options, Syncro® shared
DAS solutions and SAS storage ICs, including RAID-on-Chip (ROCs), I/O
controllers and expanders.
Overview
The SAS 3324 is a fourth generation Serial Attached SCSI (SAS) RAID-On-
Chip (ROC) device based on ROC technology and the leading Fusion-MPT
(Message Passing Technology) architecture. The SAS 3324 integrates the
latest enhancements in SAS and PCI Express technology.
The SAS 3324 supports 8 PCIe® lanes and complies with the PCI Express
3.0 specification that extends the PCIe data rates up to 8.0 GT/s per lane,
and is backwards compatible to the 5.0/2.5 GT/s data rate supported by
PCIe 2.x., 1.x. It also incorporates enhancements such as Single Root I/O
Virtualization (SR-IOV) with 16 virtual functions, End-to-End CRC (ECRC)
with Advanced Error Reporting (AER) and the latest advancements in lane
and polarity reversal, power management, hot plug support, and MSI/MSI-X
and legacy interrupt generation.
The 24-port ROC device provides SAS data transfer rates of 12, 6, and
3Gb/s per lane and SATA data transfer rates of 6 and 3Gb/s per lane. The
device automatically negotiates between the speeds. Enhanced features
are supported such as T-10 EEDP for early detection of and recovery from
data corruption, Spread Spectrum-Clocking (SSC) for EMI reduction, and
data encryption for the protection of confidential data. Additional features
include DataBolt Technology allowing users to take advantage of 12Gb/s
speeds while utilizing existing 6Gb/s drives and backplanes, and SATA FIS-
based switching that provides improved performance with SATA drives.
The SAS 3324 is available with encryption and without encryption.
The SAS 3324 ROC integrates a 72-bit, DDR3-1866 interface and supports
hardware acceleration engines for RAID 5 and RAID 6 parity calculations
and high performance dual core PowerPC 476 RISC processor that
achieves 2400 Dhrystone MIPS (DMIPS) resulting in a cost-e ective ROC
ideal for entry and mid-range servers.
SAS 3324 PCIe® to 24-port, 12Gb/s SAS/SATA ROC