incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From cem <cayiro...@gmail.com>
Subject Re: 2 nodes cassandra cluster raid10 or JBOD
Date Thu, 12 Dec 2013 15:30:51 GMT
Thanks!


On Wed, Dec 11, 2013 at 9:37 PM, Aaron Morton <aaron@thelastpickle.com>wrote:

> If you have two nodes, and RF 2, you will only be able to use eventual
> consistency. If you want to have stronger consistency and some redundancy 3
> nodes is the minimum requirement.
>
> In the current setup, with only 2 nodes, I would use RAID 10 as it
> requires less operator intervention and there is a chance of data loss with
> RF 2. If a write (including the hints) is only committed to one node and
> the disk on that node fails the write will be lost.
>
> Hope that helps.
>
>
> -----------------
> Aaron Morton
> New Zealand
> @aaronmorton
>
> Co-Founder & Principal Consultant
> Apache Cassandra Consulting
> http://www.thelastpickle.com
>
> On 11/12/2013, at 9:33 pm, Veysel Taşçıoğlu <veysel.tascioglu@gmail.com>
> wrote:
>
> Hi,
>
> What about using JBOD and replication factor 2?
>
> Regards.
> On 11 Dec 2013 02:03, "cem" <cayiroglu@gmail.com> wrote:
>
>> Hi all,
>>
>> I need to setup 2 nodes Cassandra cluster. I know that Datastax
>> recommends using JBOD as a disk configuration and have replication for the
>> redundancy. I was planning to use RAID 10 but using JBOD can save 50% disk
>> space and increase the performance . But I am not sure I should use JBOD
>> with 2 nodes cluster since there is a higher chance to lose 50% of our
>> cluster compare to a larger cluster. I may prefer to have stronger nodes if
>> I have limited number of nodes.
>>
>>
>> What do you think about that? Is there anyone who has 2 nodes cluster?
>>
>>
>> Best Regards,
>>
>> Cem
>>
>
>

Mime
View raw message