Transferring multiple records including video data

摘要

In one embodiment, a method includes receiving from the host a video special mode for reading video data, and sequentially reading the records included in data sets from the tape medium into segments of a buffer. When there is a C2 error during reading of the data sets, a predetermined error recovery process is skipped in accordance with the video special mode. When management information (DSIT) for the data set having the C2 error is available for reading, sending of the record(s) included in the data set having the C2 error to the host is skipped. For the data set having the C2 error, the number of records to be skipped included in the data set having the C2 error based on and from the DSIT is obtained and indicated to the host.

主权项

1. A magnetic tape device configured to sequentially read a plurality of records included in video data written in a tape medium, characterized in that the plurality of records are given a prescribed size such that at least one record is included in a data set which serves as a unit of writing to the tape medium and such that a boundary of the data set is aligned with a boundary of a record, and are arranged such that a beginning of the data set coincides with the beginning of a particular one of the records, the magnetic tape device comprising:
a read control configured to: receive from a host a video special mode for reading video data; sequentially read the records included in data sets from the tape medium into segments of a buffer; when there is no C2 error during reading of the data sets, send the records included in the data sets; when there is a C2 error during reading of the data sets, skip a predetermined error recovery process in accordance with the video special mode; check whether management information (DSIT) for the data set having the C2 error is available for reading; when the DSIT is available for reading, skip sending of the record(s) included in the data set having the C2 error to the host; and for the data set having the C2 error, obtain the number of records to be skipped included in the data set having the C2 error based on and from the DSIT and indicate the number to the host.