Using disk space in a Redis cluster

In Managed Databases, some disk space is reserved for service needs. The total amount of reserved space depends on the Redis version.

	Redis 6	Redis 8
File system reserve	4% of the disk capacity	4% of the disk capacity
Reserve for the operating system, service components, and logs	8 GB	15 GB

The reserved portion of disk space is unavailable for hosting databases. Take this into account when choosing a configuration lineup.

You can track disk usage using disk usage notifications and metrics. More information about metrics can be found in the Monitoring Redis cluster, nodes, and databases guide.

If a 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 total blockage or corruption of the cluster due to a lack of free space. To make the cluster read-write, scale the cluster and select a configuration with a larger disk size than the previous one.

Disk occupancy notifications

Disk occupancy notifications are sent to the email addresses of the Account Owner and panel users who are subscribed to the notification category "Services". Notifications are sent when disk occupancy reaches 80% and 95%.