Master host storage requirements
The following table identifies the minimum local storage requirements of Control Center master host nodes in high-availability deployments. The storage requirements are in addition to the storage required for the host's operating system.
|Docker data||50GB (required)||Local, high-performance storage.|
|Control Center internal services data||50GB (required)||Local, high-performance storage formatted as an XFS filesystem.|
|Application data||200GB (suggested)||Local, high-performance storage.|
|Application metadata||1GB (required)||Local, high-performance storage formatted as an XFS filesystem.|
|Application data backups||150GB (suggested)||Remote, XFS-compatible storage.|
This guide includes procedures for preparing the required block storage areas. Except for the Docker data storage area, the underlying storage must be separate real or virtual devices that DRBD can replicate.
The suggested minimum sizes for application data and application data backups should be replaced with sizes that meet your application requirements. To calculate the appropriate sizes for these storage areas, use the following guidelines:
- Application data storage includes space for both data and snapshots. The default base size for data is 100GB, and the recommended space for snapshots is 100% of the base size. Adding the two yields the suggested minimum size of 200GB.
- For application data backups, the recommended space is 150% of the base size for data.
The suggested minimum size for application data backups is 150GB. For improved reliability and performance, Zenoss strongly recommends using shared remote storage or network-attached storage for application data backups. This guide does not include instructions for mounting remote storage, but does include a step for creating the mount point.