LSI MegaRAID SAS User Manual

LSI Corporation
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6Gb/s MegaRAID SAS RAID Controllers User Guide
August 2012
Chapter 1: Overview
Summary of 6Gb/s MegaRAID SATA+SAS RAID Controller Characteristics
1.6 Summary of 6Gb/s MegaRAID SATA+SAS RAID Controller Characteristics
This section summarizes the features and benefits offered by the 6Gb/s MegaRAID SATA+SAS RAID controllers. It
contains information on SAS features, SATA features, PCI performance, integration, usability, and flexibility.
The 6Gb/s MegaRAID SATA+SAS RAID controllers have the following features:
 PCI Express x8 lane width (with support for x16 connections)
 PCI Express performance up to 5GT/s (4Gb/s) per lane
 Support for a 512-MB DDR2 800-MHz onboard SDRAM for LSISAS2108-based controllers
 Support for a 1-GB DDR3 1333-MT/s onboard SDRAM for LSISAS2208-based controllers
 One internal connector for the MegaRAID SAS 9240-4i, SAS 9260-4i, SAS 9260CV-4i, SAS 9266-4i, SAS 9271-4i, and
SAS 9280-4i4e RAID controllers
 Two internal connectors for the MegaRAID SAS 9240-8i, SAS 9260-8i, SAS 9260CV-8i, SAS 9260DE-8i, SAS 9261-8i,
SAS 9265CV-8i, SAS 9265-8i, SAS 9266-8i, SAS 9270-8i, and SAS 9271-8i RAID controllers
 Four internal connectors for the MegaRAID SAS 9260-16i and SAS 9280-16i4e RAID controllers
 Six internal connectors for the MegaRAID SAS 9280-24i4e RAID controller
 One external connector for the MegaRAID SAS 9280-4i4e, SAS 9280-16i4e, and SAS 9280-24i4e RAID controllers
 Two external connectors for the MegaRAID SAS 9280-8e, SAS 9280DE-8e, SAS 9285-8e, SAS 9285CV-8e, SAS
9285DE-8e, SAS 9286-8e, SAS 9286CV-8e, SAS 9286CV-8eCC RAID controllers
 Support for RAID levels 0, 1, 5, 6, 10, 50, and 60
 Advanced array configuration and management utilities
 Support for global hot spares and dedicated hot spares
 Support for user-defined strip sizes: 8, 16, 32, 64, 128, 256, 512, or 1024 KB
 Advanced array configuration and management utilities offer these capabilities:
— Online capacity expansion to add space to an existing drive or a new drive
— Online RAID level migration
— Drive migration
— Drive roaming
— No reboot necessary after expansion
— Load balancing
— Media scan
 User-specified rebuild rate (specifying the percentage of system resources to use from 0 percent to 100 percent)
 Nonvolatile random access memory (NVRAM) of 32 KB for storing RAID system configuration information; the
MegaRAID SAS firmware is stored in flash ROM for easy upgrade.
1.6.1 SAS Features
The 6Gb/s MegaRAID SATA+SAS RAID controllers support the following SAS features:
 They provide four fully independent PHYs or eight fully independent PHYs, depending on the controller.
 They support 6Gb/s and 3Gb/s SAS data transfers per PHY.
 They support SMP to communicate topology-management information.
 They support SSP to enable communication with other SAS devices.
 They support STP to enable communication with SATA devices through an attached expander.
 They provide a serial, point-to-point, enterprise-level storage interface.
 They simplify cabling between devices.

LSI MegaRAID SAS Specifications

General

RAID Levels	0, 1, 5
Ports	8
Form Factor	Low Profile
Operating Systems Supported	Windows, Linux, VMware
SAS Ports	8
BBU Support	Optional
Operating Temperature	0°C to 55°C