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Using disk space in an OpenSearch cluster

In Managed Databases, part of the disk space is reserved for service needs:

  • for the file system — 4% of the disk volume;
  • for the operating system, service components, and logs — 8 GB.

The reserved portion of the disk space is not available for hosting databases. Take this into account when selecting a configuration lineup.

When the cluster disk is 95% full or more, the cluster will enter the DISK_FULL status and will be read-only. This is necessary to prevent the cluster from being completely blocked or damaged due to a lack of free space. To make the cluster read-write, scale the cluster and choose a configuration with a larger disk size than the previous one.