# Welcome

Silicon Image's SATARaidTM provides Serial ATA Software RAID including Striping and Mirroring to enhance the industry's first proven PCI-to-SATA host controller product. Two major challenges facing the storage industry today are keeping pace with the increasing performance demands of computer systems by improving disk I/O throughput and providing data accessibility in the face of hard disk failures. With the SiI 3112 Serial ATA host controller and SATARaid, both of these problems are solved.

RAID Striping greatly improves hard disk I/O performance by concurrently Striping data across multiple drives. RAID Mirroring enables users to enjoy the confidence of data availability regardless of a single disk failure as data is simultaneously written to two drives.

Standard with SATARaid software is a Graphical User Interface (GUI) that provides easy-to-use configurations for the different RAID Sets supported.

# SATARaid Features

- RAID 0 and 1

- Hot Spare and On-line Mirror Rebuilding

- System GUI Monitoring Utility:

- Displays/Logs/Alerts Users to Vital RAID Set Information

- Manages RAID Set Functions (configures, rebuilds, etc.)

- RAID Set Accommodates Multiple Size HDDs

- HDDs Function Normally When Not in RAID Sets

- Adjustable Stripe Size for RAID 0

- Automatically Selects Highest Available Transfer Speed for All ATA and ATAPI Devices Supports:

- UDMA up to 150MB/Sec.

- All UDMA and PIO Modes

- Up to 2 SATA devices

- ACPI and ATA/ATAPI6