Facebook, Inc.

Meta Platforms, Inc.

John Mah

Yu Cai

Chengyan Fu

Haoci Zhang

Wlodzimierz Stanley Czarnecki

One or more write efficiency metrics are determined. The one or more write efficiency metrics are associated with a tape storage drive while the tape storage drive is operating on one or more tape storage media cartridges to write data sets to the one or more tape storage media cartridges. It is predicted whether the tape storage drive would be able to write an entire set of data sets to a current tape storage media cartridge based on the one or more write efficiency metrics. It is determined whether a different tape storage drive is to be utilized to complete writing of the entire set of data sets to the current tape storage media cartridge based on the prediction.

Write efficiency management for tape cartridge writing

An indication that a selected data set stored on a selected tape storage media is associated with a failure is received. An error correction data set group for the selected data set is identified, and wherein the error correction data set group includes a plurality of data sets and each data set included in the error correction data set group is stored on a different tape storage media. One or more data sets other than the selected data set that are included in the error correction data set group are selectively obtained from one or more corresponding tape storage media other than the selected tap storage media without reading entire contents of the one or more corresponding tape storage media. The obtained one or more data sets are utilized to recover at least a portion of the selected data set associated with the failure.

Efficient data recovery for tape storage system

Data set groups are determined, wherein each data set group includes a plurality of data sets and each data set includes error-correcting information for content user data of the data set. One or more versions of data set group level error-correcting information for each data set group are calculated. The data set groups on stored a tape storage media. After the data set groups are stored, an amount of storage available on one or more regions of the tape storage media associated with one or more tape edges is identified. An instruction is provided to store at least a partial amount of the calculated one or more versions of data set group level error-correcting information for the data set groups able to be stored in the amount of storage available on the one or more regions of the tape storage media associated with the one or more tape edges.

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Westminster, CO, United States of America

John Mah