The best replacement for hdfs is cassandra.

The best alternatives to hdfs are rated as following:

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Speaking about hdfs, one probably shouldn't forget about hadoop.

Other search terms related to hdfs and their ratings are:

★★★★★	hadoop
★★★	mapreduce

You have in mind a companion for hdfs and it is not yet here? Propose!

Scale is based on the average worldwide traffic of hdfs in all years. Click on graph for more.

hdfs

cassandra

hbase