TAPE HEADER FORMAT HAVING EFFICIENT AND ROBUST CODEWORD INTERLEAVE DESIGNATION (CWID) PROTECTION

摘要

In one embodiment, a system for providing header protection in magnetic tape recording is adapted to write a codeword interleave (CWI) set on a magnetic tape including a plurality of CWIs equal to a number of tracks, wherein a data set includes a plurality of CWI sets, provide a CWI set header for the CWI set, the CWI set header including a CWI header for each CWI in the CWI set, each CWI header including at least a CWI Designation (CWID) which indicates a location of the CWI within the data set, calculate or obtain CWID parity for all CWIDs in the CWI set header, the CWID parity including error correction coding (ECC) parity, and store the CWID parity to one or more fields which are repeated for each CWI header in the CWI set header without using reserved bits in the CWI set header to store the CWID parity.

主权项

1. A system for providing header protection in magnetic tape recording, the system comprising a processor and logic integrated with and/or executable by the processor, the logic being adapted to:
write a codeword interleave (CWI) set on a magnetic tape, the CWI set comprising a plurality of CWIs being equal to a number of tracks on the magnetic tape, wherein a data set comprises a plurality of CWI sets; provide a CWI set header for the CWI set, the CWI set header comprising a CWI header for each CWI in the CWI set, each CWI header comprising at least a CWI Designation (CWID) which indicates a location of the CWI within the data set; calculate or obtain CWID parity for all CWIDs in the CWI set header, the CWID parity comprising error correction coding (ECC) parity; and store the CWID parity to one or more fields which are repeated for each CWI header in the CWI set header without using reserved bits in the CWI set header to store the CWID parity.