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SmartPools transfer limits, introduced in OneFS 9.5, govern storage pool usage beyond which file pool policies will not attempt to move files to a target. The principal benefits of transfer limits include reliability, by preventing undesirable spillover actions, and performance, by avoiding unnecessary work.
The default transfer limit in OneFS 9.5 is 90%, and it applies to any of a cluster’s storage pools where a limit is not explicitly set. However, this limit only applies when SmartPools is licensed on a cluster and jobs are run that apply file pool policies, namely SmartPools, SmartPoolsTree, and FilePolicy.
Transfer limits can be specified as a percentage per tier, per node pool, or disabled. You can configure transfer limits from the OneFS WebUI by going to File system > Storage pools > SmartPools and selecting the resource you want.
Note: If transfer limits are configured per-tier, all the constituent node pools within that tier will share the same limit value.
In the OneFS 9.5, the Storage Pools Summary WebUI also displays a histogram which includes the transfer limit thresholds and indicates any limit violations.