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### Understand the alert
This alert is triggered when the state of a ZFS pool changes to a warning state, indicating potential issues with the pool, such as disk errors, corruption, or degraded performance.
### Troubleshoot the alert
1. **Check pool status**: Use the `zpool status` command to check the status of the ZFS pool and identify any issues or errors.
2. **Review disk health**: Inspect the health of the disks in the ZFS pool using `smartctl` or other disk health monitoring tools.
3. **Replace faulty disks**: If a disk in the ZFS pool is faulty, replace it with a new one and perform a resilvering operation using `zpool replace`.
4. **Scrub the pool**: Run a manual scrub operation on the ZFS pool with `zpool scrub` to verify data integrity and repair any detected issues.
5. **Monitor pool health**: Keep an eye on the ZFS pool's health and performance metrics to ensure that issues are resolved and do not recur.
### Useful resources
1. [ZFS on Linux Documentation](https://openzfs.github.io/openzfs-docs/)
2. [FreeBSD Handbook - ZFS](https://www.freebsd.org/doc/handbook/zfs.html)
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