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OneFS SmartPools allows you to define the value of the data within your workflows based on policies, and automatically aligns data to the appropriate price/performance tier over time. Data movement is seamless, and with file-level granularity and control using automated policies, manual control, or API interface, performance and layout, storage tier alignment, and protection settings can be tuned and optimized with minimal impact to end users.
OneFS 9.5 introduced SmartPools transfer limits. The transfer limit is a configurable threshold, expressed as a percentage. If a target pool’s capacity reaches or exceeds the transfer limit, the pool will be considered full and data will not be moved to that pool.
The principal benefits of transfer limits include reliability, by preventing undesirable spillover actions, and performance, by avoiding unnecessary work.
Transfer limits can be specified as a percentage per tier or per node pool, or they can be disabled. The default transfer limit in OneFS 9.5 is 90 percent. The default limit applies to any of a cluster’s storage pools where a limit is not explicitly set.