Compliant with the Serial ATA specification 1.0, the
VIA VT6421 offers high performance Serial ATA RAID functionality
to the full spectrum of PC processor platforms for desktops,
mobile systems and servers. Supporting all kinds of
ATA and ATAPI devices, including HDDs, CDs, DVDs, high
capacity removable devices and featuring 32-bit PCI
and PCMCIA interfaces, the VIA VT6420 enables seamless
transition to the emerging Serial ATA technology for
PCs and mobile systems.
The VIA VT6421 features two Serial ATA channels, supporting
up to two devices and one Parallel ATA channel supporting
two devices. Featuring PCMCIA interface, the Cardbus
mode supports up to two Serial ATA devices. With dual
channel Serial ATA, the VIA VT6421 delivers 12% more
bandwidth than ATA-133 for data transfer between storage
devices and CPU, bursting up to 150Mbps of data per
channel and offering a significant performance improvement
in data intensive and bulk storage application.
The VIA VT6421 provides multilevel RAID support including
RAID level 0 for maximum performance, RAID Level 1 for
maximum security and JBOD. To ensure backwards compatibility
the VIA VT6421 also integrates a single channel parallel
ATA-133 controller, eliminating the need for adaptors.
Featuring simple and practical cabling for improved
airflow in the chassis, the VIA VT6421 enables OEMs
and system builders to design smaller chassis, satisfying
market demand for smaller and more compact PC systems.
Smaller cable connectors with improved silicon design
with a common location for both 3.5 inch and 2.5 inch
drives save space and simplifies PC integration tooling
and chassis design, while the lower voltage signaling
of the VIA VT6421 alleviates the 5V tolerance support
for Parallel ATA designs. Being compatible with a wide
range of ATA and ATAPI devices, the VIA VT6421 equips
OEMs and system builders with the flexibility to reach
multiple market segments and price points.
The VIA VT6421 is the ideal solution for PC and mobile
systems users to easily upgrade their storage devices
and incorporates the emerging Serial ATA RAID standard
into their systems, taking full advantage of the higher
bandwidth, faster data transfer rates, improved data
integrity and robustness of Serial ATA technology. Featuring
a point-to-point host to device connection, installation
is simple without the need for configuration as no jumper
setting is required.
Backward compatibility with existing operating system
drivers, the VIA VT6421 requires no update to software.
The VIA VT6420 is compatible with a complete range of
Intel, AMD and VIA based processing platforms, Microsoft
Windows® 9x/ME/NT4/2K/XP and major Linux based Operating