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The large file support feature permits the maximum allowable file size in a PowerScale cluster to increase four-fold, from 4 tebibytes previously, to 16 tebibytes. For more information about the large file support feature for 16 TiB, see the PowerScale OneFS Best Practices white paper.
If large file support is enabled for 16 TiB on a source cluster, all new and existing SmartSync policies only connect with target clusters that also have large file support enabled, as illustrated in the following figure. Conversely, a 4 TiB source cluster replicating to a 16 TiB target cluster is not supported, as SmartSync requires matching file support sizes on the source and target clusters.
Furthermore, workflow impacts for existing SmartSync policies are possible if for any reason the target cluster does not have resources for the 16 TiB feature.