Deduplication system threshold based on an amount of wear of a storage device

A deduplication system comprising:

• at least one processing resource;
• and
• at least one non-transitory machine-readable storage medium comprising instructions executable by at least one processing resource to:
• obtain an indication of an amount of wear experienced by at least one storage device storing a plurality of container indexes of the deduplication system, each of the container indexes comprising one or more entries;
• adjust a compaction threshold based on the amount of wear;
• perform compaction on a selected one of the container indexes having a number of unreferenced entries that is greater than or equal to the compaction threshold, wherein performance of the compaction comprises writing the selected container index to a different location on the at least one storage device without the unreferenced entries;
• and
• prevent compaction of any of the container indexes having a number of unreferenced entries that is less than the compaction threshold.

An article comprising at least one non-transitory machine-readable storage medium comprising instructions executable by at least one processing resource of a deduplication system to:

• determine whether a hardware storage target for container indexes for the deduplication system comprises one or more storage devices of a first type or one or more storage devices of a second type, wherein storage devices of the second type of have a lesser operational life for write operations than storage devices of the first type;
• in response to a determination that the deduplication system is to store container indexes on one or more storage devices of a first type, set a container index threshold to a first value;
• in response to a determination that the deduplication system is to store container indexes on one or more storage devices of the second type;
• set the container index threshold to a second value higher than the first value;
• store a plurality of container indexes on the hardware storage target;
• identify, among the plurality of container indexes, container indexes having hits for a given portion of a given data stream;
• and
• retrieve, from the hardware storage target, a number of the container indexes having hits, the number not exceeding the container index threshold, wherein the container index threshold is a maximum number of container indexes having hits to be read from the hardware storage target for deduplication of a single portion of any data stream;
• and
• perform deduplication of the given portion in relation to the retrieved container indexes.