Write performance by enabling host data transfer immediately after a reposition command

A computer program product comprising one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions including instructions to:

• responsive to receiving on a tape drive a reposition command from a host, returning, by one or more computer processors, a ready response to the host;
• accumulating, by the one or more computer processors, a write data from the host in a write buffer, wherein the write data is accumulated in the write buffer while simultaneously moving a tape media in the tape drive to a target location, wherein the target location is a location of an end of data (EOD);
• and
• writing, by the one or more computer processors, the write data from the write buffer to the tape media immediately after the target location is reached on the tape drive.

A computer system comprising:

• one or more computer processors;
• one or more computer readable storage media;
• and
• program instructions stored on the one or more computer readable storage media for execution by at least one of the one or more computer processors, the stored program instructions including instructions to:
• responsive to receiving on a tape drive a reposition command from a host, returning, by one or more computer processors, a ready response to the host;
• accumulating, by the one or more computer processors, a write data from the host in a write buffer, wherein the write data is accumulated in the write buffer while simultaneously moving a tape media in the tape drive to a target location, wherein the target location is a location of an end of data (EOD);
• and
• writing, by the one or more computer processors, the write data from the write buffer to the tape media immediately after the target location is reached on the tape drive.