Minimizing high resolution tape directory recovery time
AssigneeInternational Business Machines Corporation
InventorsTsuyoshi Miyamura, Setsuko Masuda
Life of this patent
Estimating the term…
Abstract
Provided is a system, method, and computer program product for minimizing high resolution tape directory (HRTD) recovery time when a HRTD is invalid. A tape drive may load a tape in the tape drive. In response to receiving a write command or a read command at a beginning of tape (BOT) position, the tape drive may execute the write command or the read command without performing HRTD recovery. In response to receiving the write command or the read command at a position other than the BOT position, the tape drive may determine if the HRTD is valid. In response to determining the HRTD is not valid, the tape drive may clear a timer.
Claims20
A method for minimizing high resolution tape directory (HRTD) recovery time when a HRTD is invalid, wherein the method is performed by a tape drive, the method comprising:
- loading a tape in the tape drive;
- in response to receiving a write command or a read command at a beginning of tape (BOT) position, executing the write command or the read command without performing HRTD recovery;
- in response to receiving the write command or the read command at a position other than the BOT position, determining if the HRTD is valid;
- and
- in response to determining the HRTD is not valid, clearing a timer.
A system for minimizing high resolution tape directory (HRTD) recovery time when a HRTD is invalid, the system comprising:
- a processor;
- and
- a computer-readable storage medium communicatively coupled to the processor of a tape drive and storing program instructions which, when executed by the processor, cause the processor of the tape drive to perform a method comprising:
- loading a tape in the tape drive;
- in response to receiving a write command or a read command at a beginning of tape (BOT) position, executing the write command or the read command without performing HRTD recovery;
- in response to receiving the write command or the read command at a position other than the BOT position, determining if the HRTD is valid;
- and
- in response to determining the HRTD is not valid, clearing a timer.
A computer program product comprising a computer-readable storage medium having program instructions embodied therewith, the program instructions executable by a processor of a tape drive to cause the processor to perform a method for minimizing high resolution tape directory (HRTD) recovery time when a HRTD is invalid, the method comprising:
- loading a tape in the tape drive;
- in response to receiving a write command or a read command at a beginning of tape (BOT) position, executing the write command or the read command without performing HRTD recovery;
- in response to receiving the write command or the read command at a position other than the BOT position, determining if the HRTD is valid;
- and
- in response to determining the HRTD is not valid, clearing a timer.
Dependencies are inferred from the claim text.