6.14.4CYCLIC REDUNDANCY CHECKING
When transferring data with DT clocking on the SCSI bus, a significantly improved form of error checking, cyclic redundancy checking (CRC) is used instead of the traditional parity checking. With CRC checking, the device sending data generates a
In ST mode, the Maxtor Atlas 10K V uses the traditional parity checking method to ensure error free data transfers.
6.14.5DOMAIN VALIDATION
A new feature (also known as “physical layer integrity checking”) in Ultra160 and Ultra320 SCSI interfaces is the capability of the initiator and target devices to execute a test sequence of commands before customer operation begins to ensure that the SCSI bus can support the desired transfer rate. If errors are found, the initiator can negotiate different transfer parameters until a working configuration is found.
•Domain validation can detect configuration problems such as:
•Wide devices with a narrow bus segment between them
•DT devices connect through an ST expander
•Broken connections
It may also detect poor quality cables, marginal quality signals, and improper termination.
Domain validation is implemented using standard SCSI commands and new versions of the WRITE BUFFER and READ BUFFER commands. The sequence of commands used for domain validation may vary from system to system. The selection of commands used is entirely under control of host firmware and software.
6.14.6Adaptive Active Filter (AAF)
Also known as “receiver equalization with filtering.”AAF is a
Maxtor Atlas 10K V