SATA port selector and port muliplier 产品

SPM391PS

2 to 4 SATA RAID Controller with port selector

Highlights

• 2-to-4 SATA(Port Selector + Port Multiplier)
• Supports 6-port 3.0Gbps SATA II interface
• OS independent Hardware RAID
• Supports RAID levels: 0 / 1 / 10 / PM / Large (JBOD)
• Provides RAID Manager GUI Utility to configure and monitor the status of the disks connected on RAID controller
• Supports Hot Spare on RAID
• Supports more than 2TB RAID drive
• Rebuild speed: 200GB/hour

Introduction

SPM391PS is a Two-to-Four SATA RAID Controller. It integrated Port Selector, Port Multiplier and RAID processor to provide SATA port expansion, data protection, performance aggregation, and dual-host I/O control in various applications

SPM391PS provides four modes:

• PM (Port Multiplier) Mode
• RAID 0 Mode
• RAID 1 & RAID 10 Mode: RAID 1 (for two disks) and RAID 10 (for four disks)
• Large (JBOD) Mode

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.

The port selector enables two different hosts to control the four storage devices.  The secondary host connection can be changed to use any one of several interfaces, such as 1394, USB, AOE, NAS, and others.  The dual-host function may be used in storage subsystems, or for implementing a failover path in applications requiring redundancy.  I/O priority is first given to the eSATA host; to enable control from the secondary host, the eSATA host must be disconnected.

SPM391PS also has an advanced mode to provide both the benefits of performance boost and data protection.

SPM391PS 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.

Technical Specifications

SATA Features	Supports 6-port 3.0Gbps SATA II interface Supports SATA II Gen2i and Gen2m (External SATA Connection, eSATA) Output swing control and automatic impedance calibration for SATA II PHY Supports asynchronous signal recovery Supports spread spectrum clocking Supports partial / slumber power saving mode Automatic speed negotiation for 3 Gbps or 1.5 Gbps Supports BIST and loopback mode Supports staggered spin-up Supports 48-bit LBA addressing Supports Native Command Queue (NCQ) Supports Hot-Plug Supports Asynchronous Notification Supports PM aware and non-PM aware host
RAID Features	Fully hardware-accelerated RAID Engine No driver, BIOS or software required for RAID operation No external DRAM or processor required for RAID operation Independent of device SATA port connection sequence Supports RAID levels: 0 / 1 / 10 / PM / Large (JBOD) SATA In-band application interface Supports more than 2TB RAID drive Supports on-line command based bad sector recovery Supports on-line Auto-Rebuild Rebuild speed: 200GB/hour Rebuild proceeds continuously between power cycling Supports various RAID configurations and monitoring methods
Compliance	Compliant with Serial ATA II Port Multiplier Spec. Revision 1.1 Compliant with Serial ATA II PHY Electrical Spec. Revision 1.0 Compliant with Serial ATA High Speed Serialized AT Attachment Spec. Revision 2.5
DC Power Connector	Mini 4-pin Floppy Disk Drive like power Connector
LEDs	Power Status LED RAID Status LED Host Status LED Device Status LEDs (Error, Activity&Link)

Available Models

SPM391PS-SEH	SPM391PS-SEV

Applications

• RAID Subsystem
• NAS Servers
• Backup Systems
• Disk Clone Systems
• Serial ATA Enclosures
• Large Capacity & High Performance Solid State Drive
• Very Large Capacity Disk Systems
• SATA Ports Expander

Physical Dimensions

• 61.5(D) x 21.6(H) x 83.3(W)mm
• SCSI I Connector Form Factor
• PCI Bracket Form Factor