US 10,902,872 B1 · Managing index writes to a tape medium

Abstract

Aspects of the present disclosure relate to managing index writes within a tape. A determination can be made that a change was made to at least one file stored within a tape medium while the tape medium was mounted within a tape drive. In response to the determination, an index can be written to a data partition of the tape medium. A determination can be made whether the change included any changes to a file at least equal to a threshold hierarchy level. In response to determining that the change did not include any changes to a file at least equal to the threshold hierarchy level, a first instruction can be issued to the tape drive to reposition the tape medium to the end of the tape. A second instruction can be issued to the tape drive to perform an unthread operation at low tension to rewind the tape medium.

Claims20

Dependent claims

A method comprising:

determining, by a processor, whether a change was made to at least one file stored within a tape medium while the tape medium was mounted within a tape drive;
writing, by the processor, in response to determining that the change was made to the at least one file while the tape medium was mounted within the tape drive, an index to a data partition of the tape medium;
determining, by the processor, whether the change included any changes at least equal to a threshold hierarchy level;
issuing, by the processor, a first instruction to the tape drive, in response to determining that the change did not include any changes at least equal to the threshold hierarchy level, to reposition the tape medium to an end of the tape;
and
issuing, by the processor, a second instruction to the tape drive to perform an unthread operation at low tension to rewind the tape medium.

3 more elements

A system comprising:

a tape system having a tape medium and a tape drive;
and
a processor communicatively coupled to the tape system configured to perform a method comprising:
determining whether a change was made to at least one file stored within the tape medium while the tape medium was mounted within the tape drive;
writing, in response to determining that the change was made to the at least one file while the tape medium was mounted within the tape drive, an index to a data partition of the tape medium;
determining whether the change included any changes at least equal to a threshold hierarchy level;
issuing a first instruction to the tape drive, in response to determining that the change did not include any changes at least equal to the threshold hierarchy level, to reposition the tape medium to an end of the tape;
and
issuing a second instruction to the tape drive to perform an unthread operation at low tension to rewind the tape medium.

6 more elements

Dependencies are inferred from the claim text.

Managing index writes to a tape medium

Life of this patent

Managing index writes to a tape medium

Life of this patent

Abstract

Claims20