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SONY SDT-10000/SDT-11000 DDS Tape Drive
APPENDIX D - GLOSSARY
SCSI (Small Computer System Interface)
This computer device interface has been
certified as an American National Standard by ANSI. The standard contains the electrical
specifications, communication protocol, and command structure necessary to connect various
computer peripherals to a host computer.
Soft Error
A soft error is a data error which can be corrected by a RAW rewrite during writing, or by C1,
C2 or C3 ECC, or a read-retry during reading.
Spacing
The act of positioning the medium on a sequential access device.
System Area
A section in the Lead-in Area used to store the tape usage information.
Tape Log
The Tape Log contains details of the history of a tape, the total number of groups written, of
RAW retries, of groups read, of C3 ECC retries, and of loads. The log is copied into RAM
when the tape is loaded into the SDT-10000/SDT-11000, updated as the tape is used, and
written back into the System area on the tape when it is unloaded. Tape Write Protect, power
failure or reset will lose the log data maintained in RAM.
Underlength
The incorrect length condition that exists after executing a read command
when the requested transfer length in the command descriptor block exceeds the length of the
actual block read.
Summary of Contents for DDS-4
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