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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Multiple hard disks configuration
Date Wed, 19 May 2010 06:23:10 GMT
Yes, you can rely on replication for this (run nodetool repair).

On Mon, May 17, 2010 at 10:39 PM, Ma Xiao <maxiao@robowork.com> wrote:
> Hi all,
>     Recently we have a 5 nodes running cassandra, 4 X 1.5TB drives for each,
> I installed os(Ubuntu 9.10 Server Edition) on one of them, and make entrie
> disk as 1 partition for others, then I put 4 paths with DataFileDirectory,
> my question is what's going to happen when one of the disk fail, especialy
> the one has os installed which also holds the commit log? can we simply
> replace the disk, and cassandra will get the replica write back? or it
> should be deal  with as entire node faile(wipe all date on the node and
> rejoin the ring), that will involve mass data copy from other node but we
> have just one disk fail. Note, we dont have hardware level raid installed.
> Any suggestion?



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com

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