Building on the proven SteelVine

level of affordable storage. The SiI 4723 provides 3Gb/s SATA performance over

the single host SATA link as well as the dual device SATA links, and can be configured

for internal or external (eSATA) applications. Until now, transfer rates of 3Gb/s and

hardware RAID features were only available to enterprise class applications. SiI 4723

allows OEMs and system integrators to offer high-end features for price-sensitive

mass market applications.

Users of the SiI 4723 eliminate CPU loading by using the embedded RISC SteelVine

storage processor. This innovative new technology provides approximately 6 times

performance of USB 2.0 and approximately two times the performance of 1394b.

The SiI 4723 embedded RISC storage processor was developed by Silicon Image and

tuned for the needs of storage applications. This storage processor completely frees up

the main CPU and provides the enhanced RAID mode completely from hardware.

The device can be strapped in a single mode configuration to provide reliable data

mirroring, data performance striping, or just plain capacity expansion.

The SiI 4723 modes are : 1) SAFE or Data Mirroring (RAID 1) – allows device to

automatically copy primary hard drive without any CPU loading. The SiI 4723 provides

automatic rebuild on device replacement and auto-failover, to eliminate any workflow

interruptions. 2) FAST or Data Striping (RAID 0) – allows the device to performance

stripe the drives, to provide maximum throughput to the direct attached PC/Server.

3) BIG or Drive Spanning – allows the device to make any two drives (same or

different sizes) appear as one large drive to the host, for extra capacity (also called

concatenation). 4) JBOD or Port Multiplier — this allows the direct attached PC/Server

to see each drive as single drives (PM mode requires a host that is PM-aware.)

The SiI 4723 works with any Serial ATA compliant host port, although more function-

ality is supported when it is connected to a Port Multiplier Aware host controller

such as SiI 3124

sales representative.

Applications

Enclosures

Storage

SATA to 2-Port 3Gb/s SATA

SteelVine Storage Processor

Host

SATA Port

Si

SATA to

2-Port

SATA Storage

Processor

3Gb/s

Secondary

Port B

Secondary

Port A

3Gb/s

3Gb/s

System Status

FDD

Power

Regulators

EEPROM

GPIOs

LEDs

Si

I 3124

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