SAS3108 Datasheet, PDF (1/2 Pages) Broadcom Corporation. – PCIe to 16-port, 12Gb/s SAS/SATA IOC

LSI SAS 3108
PCI Express^® to 8-Port 12Gb/s SAS/SATA ROC
Product Brief
LSI SAS 3108
Applications
n Direct Attached SAS+SATA controller
solutions for entry to mid-range servers
n SAS RAID host bus adapter
n Cost effective, single chip solution for entry-
level RAID storage systems
n Storage Processor for external storage
applications (LSI SAS 3108SP)
Features
n High Performance IOP
– Dual PowerPC 476 @ 1.2GHz
– (2) 32KB L1 I/D caches
– (2) 512KB L2 caches
– 2MB shared L3 cache
n Exclusive-OR hardware engine for RAID 5
n RAID 6 hardware acceleration
n RAID Features
– MegaRAID^® support with activation key
• RAID levels 0, 1, 5, 6, 10, 50 and 60
– Integrated RAID
• RAID levels 0, 1, 1E and 10
n DRAM back-up at power fail using ONFI (Open
NAND Flash Interface)
n 12Gb/s SAS Interface
– 8 port SAS+SATA controller
– Supports 12, 6, and 3Gb/s SAS and
6, 3Gb/s SATA data transfer rates
– Spread spectrum clocking
– Supports SSP, SMP, STP and SATA protocols
– SAS+SATA device support
Extending Its RAID and SAS Technology Leadership, LSI Introduces
12Gb/s SAS/SATA RAID-On-a-Chip (ROC)
LSI is a storage market leader in SAS, Enterprise RAID, and Application Acceleration, enabling
the entire storage ecosystem. LSI offers the broadest SAS product portfolio in the industry
including SAS ROCs, IO controllers, expanders, host bus adapters, RAID controller cards,
switches, advanced software options, and application acceleration solutions. LSI solutions
can provide the performance, connectivity, scalability, and manageability required for today’s
enterprise storage environments. LSI’s proven SAS core has completed extensive stress and
interoperability testing resulting in the industry’s most robust, interoperable solution.
Overview
The LSI^® SAS 3108 is LSI’s fourth generation Serial Attached SCSI (SAS) RAID-On-a-Chip (ROC)
device based on ROC technology and the industry-leading Fusion-MPT^™ (Message Passing
Technology) architecture. The LSISAS3108 integrates the latest enhancements in SAS and PCI
Express technology.
The LSI SAS 3108 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 eight-port ROC device provides SAS data transfer rates of 12, 6, and 3Gb/s per lane, and
SATA at 6 and 3Gb/s data transfer rates per lane. The device automatically negotiates between
the speeds. Enhanced features are supported such as T-10 Data Protection Model 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 LSI DataBolt^™ Technology allowing users to take advantage of 12Gb/s speeds while
utilizing existing 6Gb/s drives and backplanes. The LSISAS3108 is available with encryption and
without encryption.
The LSI SAS 3108 ROC integrates a 72-bit, DDR3-1866 SDRAM interface, hardware acceleration
engines for RAID 5 and RAID 6 parity calculations, and the high performance dual core, PowerPC
476 RISC processor that achieves 2400 Dhrystone MIPS (DMIPS) resulting in a cost-effective ROC
ideal for entry and mid-range servers.
LSI offers a complete selection of internal RAID product offerings for direct attached storage
(DAS) connectivity and RAID-on-Motherboard (ROMB) solutions. Integrated RAID (0, 1, 1E, 10)