Balancing Average and Below Average Bins

Provides an overview of how the disk balancer balances the Average and Below Average storage pool bins.

The primary task of the disk balancer is to balance highly utilized storage pools in Overused and Above Average bins. However, the disk balancer can also balance storage pools that are less utilized, for example, to distribute workload evenly across the nodes, or if a new node is added to the topology to add more storage. By default, the disk balancer performs this kind of balancing less frequently than the balancing of disk space utilization.

By default, the disk balancer balances storage pools in Average and Below Average bins every 6 hours. You can configure the interval by the setting the value (in minutes) for the parameter dbal.below.avg.bins.balancing.frequency using the marpcli config save command. For example:

maprcli config save -values {"dbal.below.avg.bins.balancing.frequency":"360"}