distributed-spare · shipping · also distributed hot spare
Distributed spare
A distributed spare is replacement capacity spread across multiple devices rather than reserved on a single dedicated spare device.
Related Observatory article: Distributed spare on hesela.com
It permits reconstruction writes to use multiple destinations; placement constraints and reserved capacity still apply.
Relations
- related
- parity-declustering, raid, hot-spare, raid-rebuild
Citations
- OpenZFS: dRAID how-to, Introduction and Rebuilding to a Distributed Spare (living documentation, functionality introduced in 2.1.0). (accessed 2026-10-13)
- Parity declustering: less load per disk, not fewer reads (accessed 2026-10-13)
JSON: /data/terms/distributed-spare.json
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