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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