SPM393 is a One-to-Five SATA Port Multiplier RAID Controller. It is designed to provide SATA port expansion, data protection and performance aggregation in various applications.
SPM393 uses market-proven Multi-port Serial ATA PHY technology and a proprietary storage processor to provide very highly efficient SATA RAID operations.
With an easy configuration scheme, the device can function as a pure port multiplier which provides SATA port expansion just like a SATA Hub, a hard drive performance booster which provides a high-performance device seen by the host controller, or a hard drive data protector which automatically backs up data to prevent data loss from hard drive damage.
SPM393 also has an advanced mode to provide both the benefits of performance boost and data protection.
SPM393 has a self-contained storage processor chip which completely frees up the main CPU loading and whose SATA ports comply with the eSATA specification, making it suitable for use in both internal system and external storage applications.