LSI D815-000319-00, ICH6R manual Chapter Overview, RAID Benefits, Improved I/O

Chapter 1

Overview

This manual describes the Embedded SATA Software RAID for ICH6R. This chapter provides an overview of this product and contains the following sections:

•Section 1.1, “RAID Benefits,” page 1-1

•Section 1.2, “Product Features,” page 1-2

The Embedded SATA Software RAID supports four Serial ATA ports, providing a cost-effective way to achieve higher transfer rates and reliability. Embedded SATA Software RAID supports

•RAID level 0 data striping for improved performance

•RAID level 1 data mirroring for improved data reliability

•RAID level 10 data striping and mirroring for high data transfer rates and data redundancy

1.1RAID Benefits

RAID has gained popularity because it can improve I/O performance or increases storage subsystem reliability. RAID 0 provides better performance, while RAID 1 provides better reliability through fault tolerance and redundant data storage. RAID 10 combines both striping and mirroring to provide high data transfer rates and data redundancy.

1.1.1Improved I/O

Although hard drive capabilities have improved drastically, actual performance has improved only three to four times in the last decade. Computing performance has improved over 50 times during the same time period. RAID 0 and RAID 10 allow you to access several disks simultaneously.

Embedded SATA Software RAID 1-1

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