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1. Introduction
This section presents a brief overview of the 12Gb/s SAS RAID controller. 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.
When used with 12Gb/s SAS expanders, the controller can provide up to (256) devices through one or more 12Gb/s
SAS JBODs, making it an ideal solution for enterprise-class storage applications that called for maximum
configuration flexibility.
Unparalleled Performance for 12Gb/s SAS
The 12Gb/s SAS RAID controllers raise the standard to higher performance levels with several enhancements
including new high performance 1.2 GHz dual core ROC processor, a DDR3-1866 memory architecture and high
performance PCIe 3.0 interface bus interconnection. The controllers by default support on-board 2G of ECC
DDR3-1866 SDRAM memory.The 12Gb/s SAS is designed for backward compatibility with 6Gb/s and 3Gb/s
SAS/SATA hard drives. Regardless of the drive speed, 12Gb/s SAS RAID controllers will provide maximum read/write
performance improvements for the most performance-hungry database and IT applications.
The Sans Digtial 12Gb/s SAS expander that incorporates the latest enhancements in SAS along with new LSI DataBolt
bandwidth optimizer technology. This is designed to help facilitate the industry transition to 12Gb/s SAS-enabled
systems by allowing users to take advantage of 12Gb/s speeds while utilizing existing 6Gb/s drives and backplanes.
Using DataBolt, the Sans Digital SAS Expander buffers 6Gb/s data and then transfers it out to the host at 12Gb/s
speeds in order to match the bandwidth between faster hosts and slower SAS or SATA devices
Unsurpassed Data Availability
Designed and leveraged with Sans Digital's existing high performance RAID solution, the RAID controller provides
superior levels performance and enterprise level data protection for the most demanding next-generation server
and storage environments. It supports the hardware RAID 6 engine to allow two HDDs failures without impact the
existing data and performance. It allows users to hot swap drive in the event of a drive failure with zero downtime.
The optional flash-based backup module provides power to transfer the cache data from the SDRAM memory to the
NAND flash memory if it contains data not yet written to the drives when power is lost. The RAID controller also
supports traditional Lithium-ion (Li-ion) battery backup module (BBM) to protect cached data on RAID adapters.
Board-level hardware encryption manages any kinds of drives attached to RAID controller cards for higher levels of
security. API code supports for third-party Enterprise Key Management systems to easy integrate and manage
encryption function.
Maximum Interoperability
The 12Gb/s SAS RAID controller support broad operating system including Windows, Linux (Open Source), FreeBSD
(Open Source), Solaris (Open Source), Mac, VMware and more, along with key system monitoring features such as
enclosure management (SES2, SMP, & SGPIO) and SNMP function. Our products and technology are based on
extensive testing and validation process.
Easy RAID Management
The controllers contain an embedded McBIOS RAID manager that can access via hot key at M/B BIOS boot-up
screen. This pre-boot McBIOS RAID manager can use to simplify the setup and management of RAID controller. The
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