1-2 Overview
Copyright © 2004 by LSI Logic Corporation. All rights reserved.

1.1.2 Increased Reliability

The electromechanical components of a disk subsystem operate more slowly,
require more power, and generate more noise and vibration than electronic
devices. These factors reduce the reliability of data stored on disks.
RAID 1 and RAID 10 systems improve data storage reliability and fault
tolerance compared to single-drive computers. The additional drive in each
RAID 1 array makes it possible to prevent data loss from a hard drive failure.
You can reconstruct missing data from the remaining data drive to a replacement
drive.
1.2 Product Features

1.2.1 SATA Ports

The Embedded SATA Software RAID supports four ports.

1.2.2 BIOS Features

The BIOS features include
•RAID support before the operating system loads
•automatic detection and configuration of disk drives
•ability to handle configuration changes
•support for Interrupt 13 and Enhanced Disk Drive Specification
•support for RAID levels 0, 1, and 10
•special handling of error log and rebuilding
•ROM option size of 64 Kbyte
•automatic resume of rebuilding and check consistency
•support for BIOS Boot Specification (BBS) (If available in system BIOS,
this allows the user to select the adapter from which to boot. Specification
v1.01, January 11, 1996)
•co-existence with SCSI and CD devices
•48-bit LBA support for read, write, and cache flush functions
•independent stripe size configuration on each logical drive