Fort Collins, CO--Sept. 23, 1996--Symbios Logic Inc. announced the first headerless disk drive data controller with an integrated Ultra2 SCSI interface. The new SYM201F40 drive controller from Symbios Logic offers a data SCSI transfer rate of 80 Mbytes per second and a burst buffer bandwidth rate of 125 Mbytes per second. It also will allow data to be received from the media/read-write channel at 320 Mbits per second and continue to scale up from there.
The SYM201F40 is comprised of a SCSI Protocol Controller with integrated Low Voltage Differential (LVD) transceiver technology, a Host DMA/Multi-Context Engine, a Buffer Manager, a Disk Formatter, a Data ECC, and a Microprocessor Interface. Each of these major function blocks are designed with Symbios Logic's core methodology to facilitate integration with embedded memory and other logic, such as customer ASIC logic, microprocessors, and servo/spin functions.
Utilizing LVD transceiver technology coupled with the Wide Ultra2 SCSI interface, the SYM201F40 achieves data transfer rates up to 80 Mbytes per second. Symbios Logic's implementation of LVD transceiver technology, called LVDlink, provides the signal integrity and resulting data reliability expected from high voltage differential signaling but at a much lower solution cost. The SYM201F40 also supports greater device connectivity and longer cables with LVDlink.
The LVDlink transceivers also reduce the power needed to drive the bus, lower the amplitude of noise reflections, and allow for the higher transmission frequencies.
LVDlink provides a means of increasing the transfer rate for parallel data transfer without the need to implement a serial interface. The new LVDlink feature contributes to lowering the cost, increasing the throughput of new drive products, and leveraging the current investment of SCSI technology.
The SYM201F40 provides protection for all critical data passed through or stored in the disk environment. All controller data stored in buffer memory is protected by vertical parity. The user data is protected by SCSI bus parity, a logical sector seeded Cyclical Redundancy Check (CRC), and/or Error Correction Code (ECC) generated and checked in every phase of the data transfer from the system interface to the storage media, and back to the system interface.
The controller ECC capability has been enhanced to support characteristics of magnetic resonance heads and has maintained a performance level to allow on-the-fly correction at the full NRZ data rate. The code provides a triple burst correction capability with a maximum correction span of 15 bytes. The mis-correction capability is enhanced with CRC, and extra features, such as error logging and flexible correction burst length limiting.
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Scotts Valley, CA--September 23, 1996--Seagate Technology Inc. (Scotts Valley, CA) announced the latest addition to its Medalist product line of 3.5-inch hard disc drives. At the 2.1-Gbyte capacity point, Seagate's new Fast ATA-2 interface Medalist 2132 (ST32132A) provides desktop computer users with a combination of high capacity, strong performance, and exceptional value.
The introduction of the Medalist 2132 also marks the debut of an innovative device that enhances reliability and simplifies drive installation. This device, called SeaShield, is included at no extra cost to the customer.
Developed and manufactured by Seagate, SeaShield is designed to enhance reliability in the Medalist 2132 by protecting the printed circuit board (PCB) against environmental and handling conditions. Consisting of an innovative cover placed over the PCB and secured to the head-disc assembly (HDA), SeaShield helps reduce exposure of precision electrical components to electro-static discharge (ESD). It also serves to protect the PCB against knocks and bumps that can occur during handling of the drive, giving users greater flexibility during the installation process.
Summarized installation instructions are now printed directly on the SeaShield label, providing a practical alternative to installation guides that are often lost or misplaced. The SeaShield label also includes diagrams of cable orientation and jumper settings, enabling users to distinguish between jumpers, the power cable connector, and the interface cable connector.
Featuring 2.1 Gbytes of capacity in a one-inch high form factor, the Medalist 2132 spins at 4,500-rpm and performs average seeks at a rate of 12.5 ms, enabling users to enjoy data-intensive applications like multimedia, full-screen, full-motion video playback, and manipulation of high-resolution files on the internet.
The Medalist 2132 comes with a standard three-year limited warranty, and will ship with Disk Manager installation software. Scheduled for production in October 1996, the Medalist 2132 will be available with SeaShield through Seagate's OEM, distribution, and retail channels.
Seagate Technology Inc.
Fax: (408) 429-6356
P.O. Box 66360, 95067
920 Disc Dr.
Scotts Valley, CA 95066
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