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What is Ultra3 SCSI?

April 26, 2017SCSI ultra3

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What is Ultra3 SCSI?

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A. Ultra3 SCSI contains any of five features: double edge clocking, cyclical redundancy checking and domain validation, and manufacturers may also include packetization and/or QAS (Quick Arbitration and Select). These features improve speed, up to 160 MBytes/second, performance and overall manageability of SCSI. NOTE: for a description of the foregoing features, see the Addendum at the end of the FAQ. Q. What is the difference between Ultra3 SCSI and Ultra160 SCSI? Both terms are being used in the market. A. Ultra160 SCSI products are the current generation of performance and manageability and include double edge clocking, cyclical redundancy checking and domain validation. Manufacturers may also include packetization and/or QAS (Quick Arbitration and Select), the same as Ultra3. Ultra3 and Ultra160 SCSI devices are compatible with one another and with previous generations of SCSI devices. Q. Are all Ultra3 SCSI products interoperable with one another and with existing Ultra2 SCSI and