VT8237 データシートの表示（PDF） - Unspecified

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VT8237

Bringing Serial ATA and RAID to the Mainstream

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VIA VT8237 South Bridge

Based on VIA’s ground breaking DriveThru™ technology, V-RAID also enables ‘on-

the-fly’ upgrades to RAID configurations, and an exceptionally user friendly software

interface for V-RAID installation and management. Its key benefits are described in

more detail below.

V-RAID Performance

V-RAID optimizes hard disk data transfer rates by utilizing the integrated VIA

DriveStation™ Dual Channel Serial ATA Controller to deliver a maximum theoretical

transfer rate of 300MB/s under a RAID Level 0 configuration. Since V-RAID is

integrated into the VT8237 South Bridge, as opposed to implementing a discrete

RAID controller on the PCI bus that has a shared 132MB/s peak bandwidth limitation,

V-RAID is the only solution available that can deliver the full benefit of Serial ATA

RAID without having to adopt expensive server/workstation platforms such as PCI-X

or PCI Express.

The inherent performance advantages that the native V-RAID implementation offers

over using a third party onboard RAID controller or PCI card RAID controller by

comparing HD Tach Burst speeds, are clearly shown in Figure 5, where V-RAID

performs over 50% faster than the Promise PDC20376 discrete controller. HD Tach

Burst represents the theoretical peak of the system’s data transfer speed.

Figure 5: V-RAID Performance: HD Tach Burst Speed Benchmark

The performance benefits of V-RAID are further illustrated in Figure 6, which

compares the performance of V-RAID with that of the discrete Promise PDC20376

RAID controller using SATA and PATA configurations across a complete range of

standard hard disk performance benchmarks.

Copyright © VIA Technologies, Inc, 2003.

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