LSI 25083 Computer Hardware User Manual


 
1-10 Overview
Copyright © 2009 by LSI Corporation. All rights reserved.
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.
1.6.1 SAS 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