User`s guide

Summary of SAS RAID Controller Characteristics 1-9

1.6 Summary of SAS RAID Controller Characteristics

This section provides a summary of the features and benefits of the

MegaRAID 6Gb/s SAS RAID controllers. It contains information on SAS

features, SATA II features, PCI performance, integration, usability, and

flexibility.

The MegaRAID 6Gb/s SAS RAID controllers have the following features:

• PCI Express x8 lane width (with support for x16 connections)

• PCI Express performance up to 5Gb/s per lane

• Support for 512-Mbyte DDR2 800 MHz on-board SDRAM intelligent

battery-backed module

• One internal connector for the SAS 9260-4i RAID controller

• Two internal connectors for the SAS 9260-8i RAID controller and the

SAS 9260DE-8i 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