LSI 25083 manual SAS Features

•Two internal connectors for the SAS 9240-8i, SAS 9260-8i, SAS 9261-8i, and SAS 9260DE-8i RAID controllers

•One external connector for the SAS 9280-4i/4e RAID controller

•Two external connectors for the SAS 9280-8e RAID controller and the SAS 9280DE-8e RAID controller

•Support for RAID levels 0, 1, 5, 6, 00, 10, 50, and 60

•Advanced array configuration and management utilities

•Support for global hot spares and dedicated hot spares

•Support for user-defined stripe sizes: 8, 16, 32, 64, 128, 256, 512, or 1024 KB

•Advanced array configuration and management utilities offer:

–Online capacity expansion to add space to an existing drive or 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%-100%)

•32-Kbyte nonvolatile random access memory (NVRAM) for storing RAID system configuration information; the MegaRAID SAS firmware is stored in flash ROM for easy upgrade.

1.6.1SAS Features

The following list describes the SAS features of the RAID controllers:

•Provides four fully independent PHYs or eight fully independent PHYs, depending on the controller

•Supports 6Gb/s and 3Gb/s SAS data transfers per PHY

•Supports SMP to communicate topology management information

•Supports SSP to enable communication with other SAS devices

1-10Overview

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