HPSS Tech Topics

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Published Tech Topics

ZFS ZVOL Settings on Commodity HDD Hardware For Use By HPSS Disk Movers

September 2023
We have shown how spending some time tuning before application integration can increase HPSS disk mover performance. With ZFS ZVOLs we have shown that using the default tuning parameters results in poor performance. Large gains in performance can be had by setting ZFS volume blocksize, maximizing the hardware drive pool layout, setting ZFS readahead options for improved read performance, and increasing ZFS’s ability to absorb more workload variation before throttling to improve write performance.


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