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diff --git a/doc/features/nufa.md b/doc/features/nufa.md new file mode 100644 index 00000000000..03b8194b4c0 --- /dev/null +++ b/doc/features/nufa.md @@ -0,0 +1,20 @@ +# NUFA Translator + +The NUFA ("Non Uniform File Access") is a variant of the DHT ("Distributed Hash +Table") translator, intended for use with workloads that have a high locality +of reference. Instead of placing new files pseudo-randomly, it places them on +the same nodes where they are created so that future accesses can be made +locally. For replicated volumes, this means that one copy will be local and +others will be remote; the read-replica selection mechanisms will then favor +the local copy for reads. For non-replicated volumes, the only copy will be +local. + +## Interface + +Use of NUFA is controlled by a volume option, as follows. + + gluster volume set myvolume cluster.nufa on + +This will cause the NUFA translator to be used wherever the DHT translator +otherwise would be. The rest is all automatic. + |