Promise Technology, the leader in ATA and ATA RAID controllers, maintains an ongoing commitment to providing ultimate performance in ATA RAID solutions. With the FastTrak TX4000 ATA RAID controller card, Promise offers a high-performance, low-cost ATA RAID solution designed to deliver maximum performance with four Ultra ATA/133 drives. The FastTrak TX4000 provides four independent ATA channels, a solution that is optimized for four-drive RAID implementations. In a four-drive system, the FastTrak TX4000 bypasses the master-slave implementation used with two-channel controller cards, resulting in improved data throughput and the flexibility of hot-swap support in a RAID 0+1 set-up when paired with Promise's SuperSwap 1000 hot-swap drive enclosure. The FastTrak TX4000 includes all the standard features of Promise's classic two-channel FastTrak cards with new performance features targeted at the most demanding ATA RAID user. The 32-bit, 66MHz PCI interface supports data transfers up to 266MB/sec. The best-selling Promise BIOS with 48-bit Large LBA support instantly optimizes Ultra ATA/133 drive speeds and recognizes drive sizes exceeding 137GB each for huge array storage capacities. By combining a Promise controller card with your ATA hard drives, you can gain the incredible performance and extraordinary benefits of a high-end RAID system at a fraction of the cost. By leveraging a data-striping configuration (RAID 0), your data is spread across multiple drives for faster storage performance, dramatically increasing data throughput - up to 266MB/sec - and combining the storage capacity of the disks. With a data-mirroring configuration (RAID 1), your data is duplicated on multiple drives, delivering exceptional reliability and data protection if a drive fails. Using four drives, you can also set up a combination configuration (RAID 0+1) that offers the benefits of both schemes. Regardless of which configuration you choose, Promise ATA RAID cards are engineered to deliver premier performance. With Promise Technology's user-friendly software, RAID setup and management couldn't be easier. Built-in, menu-driven FastBuild software guides users to create arrays. Promise Array Management software offers visual administration tools to monitor and maintain your advanced storage subsystem (controller, drives, arrays) locally or across a network. Promise FastTrak TX4000 Series RAID controllers are designed to maximize your storage system performance. The controller supports RAID 0 striping for increased data throughput and extended storage capacity. The controller supports RAID 1 mirroring for ultra-reliable data protection. Also, with four drives, the controller can be configured in a RAID 0+1 array to leverage the benefits of both configuration schemes. Regardless of which configuration you choose, Promise RAID controllers maximize storage throughput, delivering transfer rates as high as 266MB/sec. Promise RAID solutions provide you with ultimate flexibility in selecting your hard drives and configuring your RAID system. Promise works with major drive manufacturers worldwide to continually test their latest drives to ensure maximum compatibility. The Promise BIOS recognizes and sets each drive type and device for optimal performance. Promise cards also employ sophisticated data handling techniques to make data transfers more efficient without overloading the host system CPU.