Tiered error recovery for tape storage devices

摘要

A tape drive system includes a read channel configured for performing a portion of a data transfer operation and includes logic adapted for monitoring the data transfer operation for detecting one or more recovered or temporary errors (temps) within a sliding window spanning a last group of datasets processed 1102. Interference between first tier and second tier recovery methods is measured based on the monitoring 1104 and a backhitch delay is set based on conditions relating to the interference of first tier and second tier recovery methods as it relates to a determined error burst 1106. A back hitch is performed and at least one condition of the data transfer operation is altered after the backhitch delay 1108. The first tier may be a dynamic or inline error recovery tier and is focused on recovery of a single dataset and may leave a successful hardware modification in place rather than initiate a backhitch. The second tier can be a burst detection tier.