Patent ID: 7995300
Filing Date: 2011-08-09
Classification: G11B

Abstract:
1. A computer readable storage device, wherein code stored in the computer readable storage device when executed by a processor causes operations, the operations comprising: writing, by a plurality of tape drives, a plurality of indicators corresponding to a plurality of data units on a tape, wherein an indicator indicates which tape drive of the plurality of tape drives has written a corresponding data unit on the tape; generating, by each of the plurality of tape drives, an extent of read errors, in response to reading the plurality of data units written on the tape, wherein a first tape drive of the plurality of tape drives that writes selected data on the tape is able to read the selected data, and wherein at least a second tape drive of the plurality of tape drives generates a read error while reading the selected data written to the tape by the first tape drive; aggregating, at a computational device coupled to the plurality of tape drives, the extent of read errors generated by each of the plurality of tape drives; and determining, at the computational device, a defective tape drive of the plurality of tape drives from the aggregated extent of read errors.