On Fri, Apr 20, 2018 at 4:08 AM, Aiman Parvaiz <ai...@steelhouse.com> wrote:

> Hi all
> I have been given a 15 nodes C* 2.2.8 cluster to manage which has a large
> size KS (~800GB).

Is this per node or in total?

> Given the size of the KS most of the management tasks like repair take a
> long time to complete and disk space management is becoming tricky from the
> systems perspective.

Please quantify "long".  We had a 12 nodes 2.1 cluster with ~60 TB total
and one repair of the full ring (using cassandra-reaper) was taking about
3-4 weeks(!).  We were using default number of vnodes, 256.
Now we have migrated to 30 nodes on Cassandra version 3.0, with only 16
vnodes and the same full repair is under 5 days.


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