96224468c4
Adds concept pages for healing and the scanner.
Updates other related files for better context.
Adds ref links and other related updates.
Closes #1168
3.1 KiB
Recover after Hardware Failure
minio
Table of Contents
Distributed MinIO deployments rely on Erasure Coding
<minio-erasure-coding> to provide built-in tolerance for
multiple drive or node failures. Depending on the deployment topology
and the selected erasure code parity, MinIO can tolerate the loss of up
to half the drives or nodes in the deployment while maintaining read
access ("read quorum") to objects.
The following table lists the typical types of failure in a MinIO deployment and links to procedures for recovering from each:
| Failure Type | Description |
|---|---|
Drive Failure <minio-restore-hardware-failure-drive> |
MinIO supports hot-swapping failed drives with new healthy drives. |
Node Failure <minio-restore-hardware-failure-node> |
MinIO detects when a node rejoins the deployment and begins
proactively healing <minio-concepts-healing> the node
shortly after it is joined back to the cluster healing data previously
stored on that node. |
Site Failure <minio-restore-hardware-failure-site> |
MinIO Site Replication supports complete resynchronization of buckets, objects, and replication-eligible configuration settings after total site loss. |
Since MinIO can operate in a degraded state without significant performance loss, administrators can schedule hardware replacement in proportion to the rate of hardware failure. "Normal" failure rates (single drive or node failure) may allow for a more reasonable replacement timeframe, while "critical" failure rates (multiple drives or nodes) may require a faster response.
For nodes with one or more drives that are either partially failed or
operating in a degraded state (increasing drive errors, SMART warnings,
timeouts in MinIO logs, etc.), you can safely unmount the drive
if the cluster has sufficient remaining healthy drives to
maintain read and write quorum <minio-ec-parity>. Missing
drives are less disruptive to the deployment than drives that are
consistently producing read and write errors.
MinIO Professional Support
MinIO SUBNET users can log in and create a new issue related to drive, node, or site failures. Coordination with MinIO Engineering via SUBNET can ensure successful recovery operations of production MinIO deployments, including root-cause analysis, and health diagnostics.
Community users can seek support on the MinIO Community Slack. Community Support is best-effort only and has no SLAs around responsiveness.
/operations/data-recovery/recover-after-drive-failure /operations/data-recovery/recover-after-node-failure /operations/data-recovery/recover-after-site-failure