Time multiplexed redundant array of independent tapes

摘要

Embodiments relate to a computer system for storing data on a time multiplexed redundant array of independent tapes. An aspect includes a memory device that buffers data received by the computer system to be written to a set of tape data storage devices. The data is written to the set of tape data storage devices in blocks that form parity stripes across the set of tape data storage device. Aspects further includes a tape drive that writes data to one of the set of tape data storage devices at a time in a tape-sequential manner and a processor that computes a parity value for each of the parity stripes. The tape drive writes the parity values for each of the parity stripes to a last subset of tapes of the set of tape data storage devices.

主权项

1. A computer system for storing data on a time multiplexed redundant array of independent tapes, the computer system comprising:
a memory device that buffers data received by the computer system and to be written to a set of tape data storage devices; a tape drive that writes data to each of the set of tape data storage devices at a time in a tape-sequential manner, wherein data is written to the set of tape data storage devices in blocks that form parity stripes across the set of tape data storage devices; and a processor in communication with the memory device and the tape drive that computes a parity value for each of the parity stripes and that tracks a tape length variable that is determined by a smallest number of data blocks written to one of the set of tape data storage devices, wherein the tape drive writes the parity values for each of the parity stripes to a last subset of tapes of the set of tape data storage devices.