OneFS Small File Storage Efficiency (SFSE) provides a feature for small files in OneFS, packing them into larger files, resulting in increased storage efficiency. If a SmartSync policy is configured for an SFSE directory, the data is replicated to the target cluster. However, the SFSE data is unpacked on the source cluster before replication. If the target cluster has SFSE enabled, the data is packed when the next SmartPools job runs on the target cluster if the dataset is in read/write. The data remains unpacked if the target cluster does not have SFSE enabled. For more information about SFSE, see the PowerScale OneFS Small File Storage Efficiency for Archive white paper.