Utilizing stored write environment conditions for read error recovery

摘要

Described herein are embodiments for utilizing stored write environment conditions for read error recovery. A tape drive measures read environment conditions as a result of receiving a read command to read data from a portion of tape and compares the read environment conditions to the write environment conditions stored for that portion of tape. If the read environment conditions are not within the predetermined range of the write environment conditions, then the handling of the tape is altered to improve read element placement on the tape by accounting for expansion and contraction of the tape based on the stored write environment conditions. The handling of the tape is altered by at least one of increasing or decreasing the tension of the tape, offsetting the tape head up or down laterally with respect to the tape, and slowing down the movement of tape across the tape head.

主权项

1. A computer implemented method of utilizing stored write environment conditions of a tape of a tape cartridge, the method comprising:
receiving a read command to read data from a portion of the tape; measuring a read relative humidity of the tape drive in response to receiving the read command; obtaining a write relative humidity stored as at least one of the write environment conditions for the portion of the tape; comparing the read relative humidity of the tape drive to the write relative humidity stored for the portion of the tape; and altering handling of said tape in response to a determination that the read relative humidity is not within a predetermined relative humidity range of the write relative humidity stored for the portion of the tape.