Riak on SAN

Guido Medina guido.medina at temetra.com
Thu Oct 3 07:15:35 EDT 2013

And for ZFS? I wouldn't recommend it, after Riak 1.4 snappy LevelDB 
compression does a nice job, why take the risk of yet another not so 
enterprise ready compression algorithms.

I could be wrong though,


On 03/10/13 12:11, Guido Medina wrote:
> I have heard some SAN's horrors stories too, Riak nodes are so cheap 
> that I don't see the point in even having any mirror on the node, here 
> my points:
>  1. Erlang interprocess communication brings some network usage, why
>     yet another network usage on replicating the data? If the whole
>     idea of Riak is have your data replicated in different nodes.
>  2. If a node goes down or die for whatever reason, bring up another
>     node and rebuild it.
>  3. If you want to really replicate your cluster Riak offers the
>     enterprise replication which I'm quite sure will be less expensive
>     than a SAN and will warranty to have your cluster ready to go
>     somewhere else as a backup.
>  4. I would even go further, SSDs are so cheap and Riak nodes are so
>     cheap now adays that I would even build a cluster using RAID 0 or
>     RAID 5 SSDs (yes, no mirror with RAID 1, if too afraid, RAID 5),
>     that will have a great impact on performance. Again, if something
>     goes wrong with 1 node, refer to point 2.
> SANs and all those "legacy" backup and replication IMHO are meant for 
> other products, like an Oracle money eater DB server.
> HTH,
> Guido.
> On 03/10/13 12:00, Brian Akins wrote:
>> So, call me naive, but couldn't ZFS be used as Heinze suggested?
>> I have some SAN horror stories - both operationally and from an 
>> economic perspective.
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