Safety copy of an Apache Cassandra database

How can I create a safety copy (dump) from Cassandra. Is available any tool like mysqldump? Maybe there is a way to make something like an ISO imag开发者_StackOverflow社区e from database?

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See http://wiki.apache.org/cassandra/Operations#Backing_up_data

You can use snapshots, or export the data to JSON format.

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The COPY command also could help: Simple data importing and exporting with Cassandra